Commit Graph

32511 Commits

Author SHA1 Message Date
Paolo Bonzini 9aec606c16 tools: include: sync include/api/linux/kvm.h
Provide a definition of KVM_CAP_DIRTY_LOG_RING_ACQ_REL.

Fixes: 17601bfed9 ("KVM: Add KVM_CAP_DIRTY_LOG_RING_ACQ_REL capability and config option")
Cc: Marc Zyngier <maz@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-10-22 07:54:19 -04:00
Paolo Bonzini 5834816829 KVM/arm64 fixes for 6.1, take #1
- Fix for stage-2 invalidation holding the VM MMU lock
   for too long by limiting the walk to the largest
   block mapping size
 
 - Enable stack protection and branch profiling for VHE
 
 - Two selftest fixes
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Merge tag 'kvmarm-fixes-6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 6.1, take #1

- Fix for stage-2 invalidation holding the VM MMU lock
  for too long by limiting the walk to the largest
  block mapping size

- Enable stack protection and branch profiling for VHE

- Two selftest fixes
2022-10-22 03:32:23 -04:00
Dave Marchevsky 8f4bc15b9a selftests/bpf: Add write to hashmap to array_map iter test
Modify iter prog in existing bpf_iter_bpf_array_map.c, which currently
dumps arraymap key/val, to also do a write of (val, key) into a
newly-added hashmap. Confirm that the write succeeds as expected by
modifying the userspace runner program.

Before a change added in an earlier commit - considering PTR_TO_BUF reg
a valid input to helpers which expect MAP_{KEY,VAL} - the verifier
would've rejected this prog change due to type mismatch. Since using
current iter's key/val to access a separate map is a reasonable usecase,
let's add support for it.

Note that the test prog cannot directly write (val, key) into hashmap
via bpf_map_update_elem when both come from iter context because key is
marked MEM_RDONLY. This is due to bpf_map_update_elem - and other basic
map helpers - taking ARG_PTR_TO_MAP_{KEY,VALUE} w/o MEM_RDONLY type
flag. bpf_map_{lookup,update,delete}_elem don't modify their
input key/val so it should be possible to tag their args READONLY, but
due to the ubiquitous use of these helpers and verifier checks for
type == MAP_VALUE, such a change is nontrivial and seems better to
address in a followup series.

Also fixup some 'goto's in test runner's map checking loop.

Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20221020160721.4030492-4-davemarchevsky@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-21 19:23:34 -07:00
Dave Marchevsky 51ee71d38d selftests/bpf: Add test verifying bpf_ringbuf_reserve retval use in map ops
Add a test_ringbuf_map_key test prog, borrowing heavily from extant
test_ringbuf.c. The program tries to use the result of
bpf_ringbuf_reserve as map_key, which was not possible before previouis
commits in this series. The test runner added to prog_tests/ringbuf.c
verifies that the program loads and does basic sanity checks to confirm
that it runs as expected.

Also, refactor test_ringbuf such that runners for existing test_ringbuf
and newly-added test_ringbuf_map_key are subtests of 'ringbuf' top-level
test.

Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20221020160721.4030492-3-davemarchevsky@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-21 19:23:34 -07:00
Manu Bretelle 94d52a1918 selftests/bpf: Initial DENYLIST for aarch64
Those tests are currently failing on aarch64, ignore them until they are
individually addressed.

Using this deny list, vmtest.sh ran successfully using

LLVM_STRIP=llvm-strip-16 CLANG=clang-16 \
    tools/testing/selftests/bpf/vmtest.sh  -- \
        ./test_progs -d \
            \"$(cat tools/testing/selftests/bpf/DENYLIST{,.aarch64} \
                | cut -d'#' -f1 \
                | sed -e 's/^[[:space:]]*//' \
                      -e 's/[[:space:]]*$//' \
                | tr -s '\n' ','\
            )\"

Signed-off-by: Manu Bretelle <chantr4@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221021210701.728135-5-chantr4@gmail.com
2022-10-21 16:27:26 -07:00
Manu Bretelle 20776b72ae selftests/bpf: Update vmtests.sh to support aarch64
Add handling of aarch64 when setting QEMU options and provide the right
path to aarch64 kernel image.

Signed-off-by: Manu Bretelle <chantr4@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221021210701.728135-4-chantr4@gmail.com
2022-10-21 16:27:25 -07:00
Manu Bretelle ec99451f0a selftests/bpf: Add config.aarch64
config.aarch64, similarly to config.{s390x,x86_64} is a config enabling
building a kernel on aarch64 to be used in bpf's
selftests/kernel-patches CI.

Signed-off-by: Manu Bretelle <chantr4@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221021210701.728135-3-chantr4@gmail.com
2022-10-21 16:27:25 -07:00
Manu Bretelle 7a42af4b94 selftests/bpf: Remove entries from config.s390x already present in config
`config.s390x` had entries already present in `config`.

When generating the config used by vmtest, we concatenate the `config`
file with the `config.{arch}` one, making those entries duplicated.

This patch removes that duplication.

Before:
$ comm -1 -2  <(sort tools/testing/selftests/bpf/config.s390x) <(sort
tools/testing/selftests/bpf/config)
CONFIG_MODULE_SIG=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
$

Ater:
$ comm -1 -2  <(sort tools/testing/selftests/bpf/config.s390x) <(sort
tools/testing/selftests/bpf/config)
$

Signed-off-by: Manu Bretelle <chantr4@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221021210701.728135-2-chantr4@gmail.com
2022-10-21 16:27:25 -07:00
Quentin Monnet 2c76238ead bpftool: Add "bootstrap" feature to version output
Along with the version number, "bpftool version" displays a list of
features that were selected at compilation time for bpftool. It would be
useful to indicate in that list whether a binary is a bootstrap version
of bpftool. Given that an increasing number of components rely on
bootstrap versions for generating skeletons, this could help understand
what a binary is capable of if it has been copied outside of the usual
"bootstrap" directory.

To detect a bootstrap version, we simply rely on the absence of
implementation for the do_prog() function. To do this, we must move the
(unchanged) list of commands before do_version(), which in turn requires
renaming this "cmds" array to avoid shadowing it with the "cmds"
argument in cmd_select().

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20221020100332.69563-1-quentin@isovalent.com
2022-10-21 23:41:13 +02:00
Quentin Monnet 7e5eb725cf bpftool: Set binary name to "bpftool" in help and version output
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:

    $ bpftool version | head -n 1
    /usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60

More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.

As an additional benefit, this seems to help with integration with
Meson for packaging [0].

[0] https://github.com/NixOS/nixpkgs/pull/195934

Suggested-by: Vladimír Čunát <vladimir.cunat@nic.cz>
Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221020100300.69328-1-quentin@isovalent.com
2022-10-21 14:37:46 -07:00
Xu Kuohai d9740535b8 libbpf: Avoid allocating reg_name with sscanf in parse_usdt_arg()
The reg_name in parse_usdt_arg() is used to hold register name, which
is short enough to be held in a 16-byte array, so we could define
reg_name as char reg_name[16] to avoid dynamically allocating reg_name
with sscanf.

Suggested-by: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/bpf/20221018145538.2046842-1-xukuohai@huaweicloud.com
2022-10-21 14:28:14 -07:00
Delyan Kratunov eb814cf1ad selftests/bpf: fix task_local_storage/exit_creds rcu usage
BPF CI has revealed flakiness in the task_local_storage/exit_creds test.
The failure point in CI [1] is that null_ptr_count is equal to 0,
which indicates that the program hasn't run yet. This points to the
kern_sync_rcu (sys_membarrier -> synchronize_rcu underneath) not
waiting sufficiently.

Indeed, synchronize_rcu only waits for read-side sections that started
before the call. If the program execution starts *during* the
synchronize_rcu invocation (due to, say, preemption), the test won't
wait long enough.

As a speculative fix, make the synchornize_rcu calls in a loop until
an explicit run counter has gone up.

  [1]: https://github.com/kernel-patches/bpf/actions/runs/3268263235/jobs/5374940791

Signed-off-by: Delyan Kratunov <delyank@meta.com>
Link: https://lore.kernel.org/r/156d4ef82275a074e8da8f4cffbd01b0c1466493.camel@meta.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-21 13:58:09 -07:00
Linus Torvalds ce3d90a877 Tracing/tools updates for 6.1-rc1:
- Make dot2c generate monitor's automata definition static
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Merge tag 'trace-tools-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing tool update from Steven Rostedt:

 - Make dot2c generate monitor's automata definition static

* tag 'trace-tools-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  rv/dot2c: Make automaton definition static
2022-10-21 12:29:52 -07:00
Wang Yufen b81a677400 bpftool: Update the bash completion(add autoattach to prog load)
Add autoattach optional to prog load|loadall for supporting
one-step load-attach-pin_link.

Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Link: https://lore.kernel.org/r/1665736275-28143-4-git-send-email-wangyufen@huawei.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-21 08:59:00 -07:00
Wang Yufen ff0e9a579e bpftool: Update doc (add autoattach to prog load)
Add autoattach optional to prog load|loadall for supporting
one-step load-attach-pin_link.

Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Link: https://lore.kernel.org/r/1665736275-28143-3-git-send-email-wangyufen@huawei.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-21 08:59:00 -07:00
Wang Yufen 19526e701e bpftool: Add autoattach for bpf prog load|loadall
Add autoattach optional to support one-step load-attach-pin_link.

For example,
   $ bpftool prog loadall test.o /sys/fs/bpf/test autoattach

   $ bpftool link
   26: tracing  name test1  tag f0da7d0058c00236  gpl
   	loaded_at 2022-09-09T21:39:49+0800  uid 0
   	xlated 88B  jited 55B  memlock 4096B  map_ids 3
   	btf_id 55
   28: kprobe  name test3  tag 002ef1bef0723833  gpl
   	loaded_at 2022-09-09T21:39:49+0800  uid 0
   	xlated 88B  jited 56B  memlock 4096B  map_ids 3
   	btf_id 55
   57: tracepoint  name oncpu  tag 7aa55dfbdcb78941  gpl
   	loaded_at 2022-09-09T21:41:32+0800  uid 0
   	xlated 456B  jited 265B  memlock 4096B  map_ids 17,13,14,15
   	btf_id 82

   $ bpftool link
   1: tracing  prog 26
   	prog_type tracing  attach_type trace_fentry
   3: perf_event  prog 28
   10: perf_event  prog 57

The autoattach optional can support tracepoints, k(ret)probes,
u(ret)probes.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Link: https://lore.kernel.org/r/1665736275-28143-2-git-send-email-wangyufen@huawei.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-21 08:59:00 -07:00
Benjamin Poirier b2c0921b92 selftests: net: Fix netdev name mismatch in cleanup
lag_lib.sh creates the interfaces dummy1 and dummy2 whereas
dev_addr_lists.sh:destroy() deletes the interfaces dummy0 and dummy1. Fix
the mismatch in names.

Fixes: bbb774d921 ("net: Add tests for bonding and team address list management")
Signed-off-by: Benjamin Poirier <bpoirier@nvidia.com>
Reviewed-by: Jonathan Toppins <jtoppins@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-10-20 21:09:22 -07:00
Benjamin Poirier ae108c48b5 selftests: net: Fix cross-tree inclusion of scripts
When exporting and running a subset of selftests via kselftest, files from
parts of the source tree which were not exported are not available. A few
tests are trying to source such files. Address the problem by using
symlinks.

The problem can be reproduced by running:
make -C tools/testing/selftests gen_tar TARGETS="drivers/net/bonding"
[... extract archive ...]
./run_kselftest.sh

or:
make kselftest KBUILD_OUTPUT=/tmp/kselftests TARGETS="drivers/net/bonding"

Fixes: bbb774d921 ("net: Add tests for bonding and team address list management")
Fixes: eccd0a80dc ("selftests: net: dsa: add a stress test for unlocked FDB operations")
Link: https://lore.kernel.org/netdev/40f04ded-0c86-8669-24b1-9a313ca21076@redhat.com/
Reported-by: Jonathan Toppins <jtoppins@redhat.com>
Signed-off-by: Benjamin Poirier <bpoirier@nvidia.com>
Reviewed-by: Jonathan Toppins <jtoppins@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-10-20 21:09:22 -07:00
Wang Yufen 98af374602 selftests/bpf: fix missing BPF object files
After commit afef88e655 ("selftests/bpf: Store BPF object files with
.bpf.o extension"), we should use *.bpf.o instead of *.o.

In addition, use the BPF_FILE variable to save the BPF object file name,
which can be better identified and modified.

Fixes: afef88e655 ("selftests/bpf: Store BPF object files with .bpf.o extension")
Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Acked-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/r/1666235134-562-1-git-send-email-wangyufen@huawei.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-20 19:05:50 -07:00
Jakub Kicinski 94adb5e29e Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-10-20 17:49:10 -07:00
Linus Torvalds 6d36c728bc Networking fixes for 6.1-rc2, including fixes from netfilter
Current release - regressions:
   - revert "net: fix cpu_max_bits_warn() usage in netif_attrmask_next{,_and}"
 
   - revert "net: sched: fq_codel: remove redundant resource cleanup in fq_codel_init()"
 
   - dsa: uninitialized variable in dsa_slave_netdevice_event()
 
   - eth: sunhme: uninitialized variable in happy_meal_init()
 
 Current release - new code bugs:
   - eth: octeontx2: fix resource not freed after malloc
 
 Previous releases - regressions:
   - sched: fix return value of qdisc ingress handling on success
 
   - sched: fix race condition in qdisc_graft()
 
   - udp: update reuse->has_conns under reuseport_lock.
 
   - tls: strp: make sure the TCP skbs do not have overlapping data
 
   - hsr: avoid possible NULL deref in skb_clone()
 
   - tipc: fix an information leak in tipc_topsrv_kern_subscr
 
   - phylink: add mac_managed_pm in phylink_config structure
 
   - eth: i40e: fix DMA mappings leak
 
   - eth: hyperv: fix a RX-path warning
 
   - eth: mtk: fix memory leaks
 
 Previous releases - always broken:
   - sched: cake: fix null pointer access issue when cake_init() fails
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Merge tag 'net-6.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from netfilter.

  Current release - regressions:

   - revert "net: fix cpu_max_bits_warn() usage in
     netif_attrmask_next{,_and}"

   - revert "net: sched: fq_codel: remove redundant resource cleanup in
     fq_codel_init()"

   - dsa: uninitialized variable in dsa_slave_netdevice_event()

   - eth: sunhme: uninitialized variable in happy_meal_init()

  Current release - new code bugs:

   - eth: octeontx2: fix resource not freed after malloc

  Previous releases - regressions:

   - sched: fix return value of qdisc ingress handling on success

   - sched: fix race condition in qdisc_graft()

   - udp: update reuse->has_conns under reuseport_lock.

   - tls: strp: make sure the TCP skbs do not have overlapping data

   - hsr: avoid possible NULL deref in skb_clone()

   - tipc: fix an information leak in tipc_topsrv_kern_subscr

   - phylink: add mac_managed_pm in phylink_config structure

   - eth: i40e: fix DMA mappings leak

   - eth: hyperv: fix a RX-path warning

   - eth: mtk: fix memory leaks

  Previous releases - always broken:

   - sched: cake: fix null pointer access issue when cake_init() fails"

* tag 'net-6.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (43 commits)
  net: phy: dp83822: disable MDI crossover status change interrupt
  net: sched: fix race condition in qdisc_graft()
  net: hns: fix possible memory leak in hnae_ae_register()
  wwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()
  sfc: include vport_id in filter spec hash and equal()
  genetlink: fix kdoc warnings
  selftests: add selftest for chaining of tc ingress handling to egress
  net: Fix return value of qdisc ingress handling on success
  net: sched: sfb: fix null pointer access issue when sfb_init() fails
  Revert "net: sched: fq_codel: remove redundant resource cleanup in fq_codel_init()"
  net: sched: cake: fix null pointer access issue when cake_init() fails
  ethernet: marvell: octeontx2 Fix resource not freed after malloc
  netfilter: nf_tables: relax NFTA_SET_ELEM_KEY_END set flags requirements
  netfilter: rpfilter/fib: Set ->flowic_uid correctly for user namespaces.
  ionic: catch NULL pointer issue on reconfig
  net: hsr: avoid possible NULL deref in skb_clone()
  bnxt_en: fix memory leak in bnxt_nvm_test()
  ip6mr: fix UAF issue in ip6mr_sk_done() when addrconf_init_net() failed
  udp: Update reuse->has_conns under reuseport_lock.
  net: ethernet: mediatek: ppe: Remove the unused function mtk_foe_entry_usable()
  ...
2022-10-20 17:24:59 -07:00
Daniel Bristot de Oliveira 21a1994b64 rv/dot2c: Make automaton definition static
Monitor's automata definition is only used locally, so make dot2c generate
a static definition.

Link: https://lore.kernel.org/all/202208210332.gtHXje45-lkp@intel.com
Link: https://lore.kernel.org/all/202208210358.6HH3OrVs-lkp@intel.com
Link: https://lkml.kernel.org/r/ffbb92010f643307766c9307fd42f416e5b85fa0.1661266564.git.bristot@kernel.org

Cc: Steven Rostedt <rostedt@goodmis.org>
Fixes: e3c9fc78f0 ("tools/rv: Add dot2c")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-10-20 16:02:45 -04:00
Jie Meng 8662de2321 bpf: add selftests for lsh, rsh, arsh with reg operand
Current tests cover only shifts with an immediate as the source
operand/shift counts; add a new test case to cover register operand.

Signed-off-by: Jie Meng <jmeng@fb.com>
Link: https://lore.kernel.org/r/20221007202348.1118830-4-jmeng@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-19 16:53:51 -07:00
Andrii Nakryiko 2f968e9f4a libbpf: add non-mmapable data section selftest
Add non-mmapable data section to test_skeleton selftest and make sure it
really isn't mmapable by trying to mmap() it anyways.

Also make sure that libbpf doesn't report BPF_F_MMAPABLE flag to users.

Additional, some more manual testing was performed that this feature
works as intended.

Looking at created map through bpftool shows that flags passed to kernel are
indeed zero:

  $ bpftool map show
  ...
  1782: array  name .data.non_mmapa  flags 0x0
          key 4B  value 16B  max_entries 1  memlock 4096B
          btf_id 1169
          pids test_progs(8311)
  ...

Checking BTF uploaded to kernel for this map shows that zero_key and
zero_value are indeed marked as static, even though zero_key is actually
original global (but STV_HIDDEN) variable:

  $ bpftool btf dump id 1169
  ...
  [51] VAR 'zero_key' type_id=2, linkage=static
  [52] VAR 'zero_value' type_id=7, linkage=static
  ...
  [62] DATASEC '.data.non_mmapable' size=16 vlen=2
          type_id=51 offset=0 size=4 (VAR 'zero_key')
          type_id=52 offset=4 size=12 (VAR 'zero_value')
  ...

And original BTF does have zero_key marked as linkage=global:

  $ bpftool btf dump file test_skeleton.bpf.linked3.o
  ...
  [51] VAR 'zero_key' type_id=2, linkage=global
  [52] VAR 'zero_value' type_id=7, linkage=static
  ...
  [62] DATASEC '.data.non_mmapable' size=16 vlen=2
          type_id=51 offset=0 size=4 (VAR 'zero_key')
          type_id=52 offset=4 size=12 (VAR 'zero_value')

Bpftool didn't require any changes at all because it checks whether internal
map is mmapable already, but just to double-check generated skeleton, we
see that .data.non_mmapable neither sets mmaped pointer nor has
a corresponding field in the skeleton:

  $ grep non_mmapable test_skeleton.skel.h
                  struct bpf_map *data_non_mmapable;
          s->maps[7].name = ".data.non_mmapable";
          s->maps[7].map = &obj->maps.data_non_mmapable;

But .data.read_mostly has all of those things:

  $ grep read_mostly test_skeleton.skel.h
                  struct bpf_map *data_read_mostly;
          struct test_skeleton__data_read_mostly {
                  int read_mostly_var;
          } *data_read_mostly;
          s->maps[6].name = ".data.read_mostly";
          s->maps[6].map = &obj->maps.data_read_mostly;
          s->maps[6].mmaped = (void **)&obj->data_read_mostly;
          _Static_assert(sizeof(s->data_read_mostly->read_mostly_var) == 4, "unexpected size of 'read_mostly_var'");

Acked-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Dave Marchevsky <davemarchevsky@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20221019002816.359650-4-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-19 16:40:45 -07:00
Andrii Nakryiko 4fcac46c7e libbpf: only add BPF_F_MMAPABLE flag for data maps with global vars
Teach libbpf to not add BPF_F_MMAPABLE flag unnecessarily for ARRAY maps
that are backing data sections, if such data sections don't expose any
variables to user-space. Exposed variables are those that have
STB_GLOBAL or STB_WEAK ELF binding and correspond to BTF VAR's
BTF_VAR_GLOBAL_ALLOCATED linkage.

The overall idea is that if some data section doesn't have any variable that
is exposed through BPF skeleton, then there is no reason to make such
BPF array mmapable. Making BPF array mmapable is not a free no-op
action, because BPF verifier doesn't allow users to put special objects
(such as BPF spin locks, RB tree nodes, linked list nodes, kptrs, etc;
anything that has a sensitive internal state that should not be modified
arbitrarily from user space) into mmapable arrays, as there is no way to
prevent user space from corrupting such sensitive state through direct
memory access through memory-mapped region.

By making sure that libbpf doesn't add BPF_F_MMAPABLE flag to BPF array
maps corresponding to data sections that only have static variables
(which are not supposed to be visible to user space according to libbpf
and BPF skeleton rules), users now can have spinlocks, kptrs, etc in
either default .bss/.data sections or custom .data.* sections (assuming
there are no global variables in such sections).

The only possible hiccup with this approach is the need to use global
variables during BPF static linking, even if it's not intended to be
shared with user space through BPF skeleton. To allow such scenarios,
extend libbpf's STV_HIDDEN ELF visibility attribute handling to
variables. Libbpf is already treating global hidden BPF subprograms as
static subprograms and adjusts BTF accordingly to make BPF verifier
verify such subprograms as static subprograms with preserving entire BPF
verifier state between subprog calls. This patch teaches libbpf to treat
global hidden variables as static ones and adjust BTF information
accordingly as well. This allows to share variables between multiple
object files during static linking, but still keep them internal to BPF
program and not get them exposed through BPF skeleton.

Note, that if the user has some advanced scenario where they absolutely
need BPF_F_MMAPABLE flag on .data/.bss/.rodata BPF array map despite
only having static variables, they still can achieve this by forcing it
through explicit bpf_map__set_map_flags() API.

Acked-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/r/20221019002816.359650-3-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-19 16:40:45 -07:00
Andrii Nakryiko f33f742d56 libbpf: clean up and refactor BTF fixup step
Refactor libbpf's BTF fixup step during BPF object open phase. The only
functional change is that we now ignore BTF_VAR_GLOBAL_EXTERN variables
during fix up, not just BTF_VAR_STATIC ones, which shouldn't cause any
change in behavior as there shouldn't be any extern variable in data
sections for valid BPF object anyways.

Otherwise it's just collapsing two functions that have no reason to be
separate, and switching find_elf_var_offset() helper to return entire
symbol pointer, not just its offset. This will be used by next patch to
get ELF symbol visibility.

While refactoring, also "normalize" debug messages inside
btf_fixup_datasec() to follow general libbpf style and print out data
section name consistently, where it's available.

Acked-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20221019002816.359650-2-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-19 16:40:45 -07:00
Mickaël Salaün 091873e47e
selftests/landlock: Build without static libraries
The only (forced) static test binary doesn't depend on libcap.  Because
using -lcap on systems that don't have such static library would fail
(e.g. on Arch Linux), let's be more specific and require only dynamic
libcap linking.

Fixes: a52540522c ("selftests/landlock: Fix out-of-tree builds")
Cc: Anders Roxell <anders.roxell@linaro.org>
Cc: Guillaume Tucker <guillaume.tucker@collabora.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: stable@vger.kernel.org
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Link: https://lore.kernel.org/r/20221019200536.2771316-1-mic@digikod.net
2022-10-19 22:10:56 +02:00
Daniel Müller 81bfcc3fcd bpf/docs: Summarize CI system and deny lists
This change adds a brief summary of the BPF continuous integration (CI)
to the BPF selftest documentation. The summary focuses not so much on
actual workings of the CI, as it is maintained outside of the
repository, but aims to document the few bits of it that are sourced
from this repository and that developers may want to adjust as part of
patch submissions: the BPF kernel configuration and the deny list
file(s).

Changelog:
- v1->v2:
  - use s390x instead of s390 for consistency

Signed-off-by: Daniel Müller <deso@posteo.net>
Acked-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/r/20221018164015.1970862-1-deso@posteo.net
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2022-10-19 11:42:01 -07:00
Paul Blakey fd602f5cb5 selftests: add selftest for chaining of tc ingress handling to egress
This test runs a simple ingress tc setup between two veth pairs,
then adds a egress->ingress rule to test the chaining of tc ingress
pipeline to tc egress piepline.

Signed-off-by: Paul Blakey <paulb@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-10-19 14:04:36 +01:00
Ido Schimmel b526b2ea14 selftests: bridge_igmp: Remove unnecessary address deletion
The test group address is added and removed in v2reportleave_test().
There is no need to delete it again during cleanup as it results in the
following error message:

 # bash -x ./bridge_igmp.sh
 [...]
 + cleanup
 + pre_cleanup
 [...]
 + ip address del dev swp4 239.10.10.10/32
 RTNETLINK answers: Cannot assign requested address
 + h2_destroy

Solve by removing the unnecessary address deletion.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-10-19 14:01:08 +01:00
Ido Schimmel 6fb1faa1b9 selftests: bridge_vlan_mcast: Delete qdiscs during cleanup
The qdiscs are added during setup, but not deleted during cleanup,
resulting in the following error messages:

 # ./bridge_vlan_mcast.sh
 [...]
 # ./bridge_vlan_mcast.sh
 Error: Exclusivity flag on, cannot modify.
 Error: Exclusivity flag on, cannot modify.

Solve by deleting the qdiscs during cleanup.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-10-19 14:01:08 +01:00
Jakub Kicinski 3566a79c9e bpf-next-for-netdev
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Merge tag 'for-netdev' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
pull-request: bpf-next 2022-10-18

We've added 33 non-merge commits during the last 14 day(s) which contain
a total of 31 files changed, 874 insertions(+), 538 deletions(-).

The main changes are:

1) Add RCU grace period chaining to BPF to wait for the completion
   of access from both sleepable and non-sleepable BPF programs,
   from Hou Tao & Paul E. McKenney.

2) Improve helper UAPI by explicitly defining BPF_FUNC_xxx integer
   values. In the wild we have seen OS vendors doing buggy backports
   where helper call numbers mismatched. This is an attempt to make
   backports more foolproof, from Andrii Nakryiko.

3) Add libbpf *_opts API-variants for bpf_*_get_fd_by_id() functions,
   from Roberto Sassu.

4) Fix libbpf's BTF dumper for structs with padding-only fields,
   from Eduard Zingerman.

5) Fix various libbpf bugs which have been found from fuzzing with
   malformed BPF object files, from Shung-Hsi Yu.

6) Clean up an unneeded check on existence of SSE2 in BPF x86-64 JIT,
   from Jie Meng.

7) Fix various ASAN bugs in both libbpf and selftests when running
   the BPF selftest suite on arm64, from Xu Kuohai.

8) Fix missing bpf_iter_vma_offset__destroy() call in BPF iter selftest
   and use in-skeleton link pointer to remove an explicit bpf_link__destroy(),
   from Jiri Olsa.

9) Fix BPF CI breakage by pointing to iptables-legacy instead of relying
   on symlinked iptables which got upgraded to iptables-nft,
   from Martin KaFai Lau.

10) Minor BPF selftest improvements all over the place, from various others.

* tag 'for-netdev' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (33 commits)
  bpf/docs: Update README for most recent vmtest.sh
  bpf: Use rcu_trace_implies_rcu_gp() for program array freeing
  bpf: Use rcu_trace_implies_rcu_gp() in local storage map
  bpf: Use rcu_trace_implies_rcu_gp() in bpf memory allocator
  rcu-tasks: Provide rcu_trace_implies_rcu_gp()
  selftests/bpf: Use sys_pidfd_open() helper when possible
  libbpf: Fix null-pointer dereference in find_prog_by_sec_insn()
  libbpf: Deal with section with no data gracefully
  libbpf: Use elf_getshdrnum() instead of e_shnum
  selftest/bpf: Fix error usage of ASSERT_OK in xdp_adjust_tail.c
  selftests/bpf: Fix error failure of case test_xdp_adjust_tail_grow
  selftest/bpf: Fix memory leak in kprobe_multi_test
  selftests/bpf: Fix memory leak caused by not destroying skeleton
  libbpf: Fix memory leak in parse_usdt_arg()
  libbpf: Fix use-after-free in btf_dump_name_dups
  selftests/bpf: S/iptables/iptables-legacy/ in the bpf_nf and xdp_synproxy test
  selftests/bpf: Alphabetize DENYLISTs
  selftests/bpf: Add tests for _opts variants of bpf_*_get_fd_by_id()
  libbpf: Introduce bpf_link_get_fd_by_id_opts()
  libbpf: Introduce bpf_btf_get_fd_by_id_opts()
  ...
====================

Link: https://lore.kernel.org/r/20221018210631.11211-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-10-18 18:56:43 -07:00
Sven Schnelle cb05c81ada selftests/ftrace: fix dynamic_events dependency check
commit 95c104c378 ("tracing: Auto generate event name when creating a
group of events") changed the syntax in the ftrace README file which is
used by the selftests to check what features are support. Adjust the
string to make test_duplicates.tc and trigger-synthetic-eprobe.tc work
again.

Fixes: 95c104c378 ("tracing: Auto generate event name when creating a group of events")
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-10-18 14:27:23 -06:00
Zhao Gongyi eb6789b0c3 selftests/memory-hotplug: Remove the redundant warning information
Remove the redundant warning information of online_all_offline_memory()
since there is a warning in online_memory_expect_success().

Signed-off-by: Zhao Gongyi <zhaogongyi@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-10-18 14:21:18 -06:00
Ricardo Cañuelo 2a8e366b23 selftests/kexec: fix build for ARCH=x86_64
Handle the scenario where the build is launched with the ARCH envvar
defined as x86_64.

Signed-off-by: Ricardo Cañuelo <ricardo.canuelo@collabora.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-10-18 14:13:25 -06:00
Ricardo Cañuelo beb7d862ed selftests/intel_pstate: fix build for ARCH=x86_64
Handle the scenario where the build is launched with the ARCH envvar
defined as x86_64.

Signed-off-by: Ricardo Cañuelo <ricardo.canuelo@collabora.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-10-18 14:13:19 -06:00
Ricardo Cañuelo 03cab65a07 selftests/futex: fix build for clang
Don't use the test-specific header files as source files to force a
target dependency, as clang will complain if more than one source file
is used for a compile command with a single '-o' flag.

Use the proper Makefile variables instead as defined in
tools/testing/selftests/lib.mk.

Signed-off-by: Ricardo Cañuelo <ricardo.canuelo@collabora.com>
Reviewed-by: André Almeida <andrealmeid@igalia.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-10-18 14:13:11 -06:00
Daniel Müller 6c4e777fbb bpf/docs: Update README for most recent vmtest.sh
Since commit 40b09653b1 ("selftests/bpf: Adjust vmtest.sh to use local
kernel configuration") the vmtest.sh script no longer downloads a kernel
configuration but uses the local, in-repository one.
This change updates the README, which still mentions the old behavior.

Signed-off-by: Daniel Müller <deso@posteo.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20221017232458.1272762-1-deso@posteo.net
2022-10-18 21:54:05 +02:00
Stanislav Fomichev 35cc9d622e selftests/bpf: Add reproducer for decl_tag in func_proto return type
It should trigger a WARN_ON_ONCE in btf_type_id_size.

     btf_func_proto_check kernel/bpf/btf.c:4447 [inline]
     btf_check_all_types kernel/bpf/btf.c:4723 [inline]
     btf_parse_type_sec kernel/bpf/btf.c:4752 [inline]
     btf_parse kernel/bpf/btf.c:5026 [inline]
     btf_new_fd+0x1926/0x1e70 kernel/bpf/btf.c:6892
     bpf_btf_load kernel/bpf/syscall.c:4324 [inline]
     __sys_bpf+0xb7d/0x4cf0 kernel/bpf/syscall.c:5010
     __do_sys_bpf kernel/bpf/syscall.c:5069 [inline]
     __se_sys_bpf kernel/bpf/syscall.c:5067 [inline]
     __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:5067
     do_syscall_x64 arch/x86/entry/common.c:50 [inline]
     do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
     entry_SYSCALL_64_after_hwframe+0x63/0xcd

Cc: Yonghong Song <yhs@fb.com>
Cc: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20221015002444.2680969-1-sdf@google.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2022-10-17 10:56:12 -07:00
Marco Elver 23488ec668 selftests/perf_events: Add a SIGTRAP stress test with disables
Add a SIGTRAP stress test that exercises repeatedly enabling/disabling
an event while it concurrently keeps firing.

Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/all/Y0E3uG7jOywn7vy3@elver.google.com/
2022-10-17 16:32:06 +02:00
Matti Vaittinen 72b2aa3819 tools: iio: iio_utils: fix digit calculation
The iio_utils uses a digit calculation in order to know length of the
file name containing a buffer number. The digit calculation does not
work for number 0.

This leads to allocation of one character too small buffer for the
file-name when file name contains value '0'. (Eg. buffer0).

Fix digit calculation by returning one digit to be present for number
'0'.

Fixes: 096f9b862e ("tools:iio:iio_utils: implement digit calculation")
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/Y0f+tKCz+ZAIoroQ@dc75zzyyyyyyyyyyyyycy-3.rev.dnainternet.fi
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-10-17 08:51:26 +01:00
Linus Torvalds 8636df94ec perf tools changes for v6.1: 2nd batch
- Use BPF CO-RE (Compile Once, Run Everywhere) to support old kernels
   when using bperf (perf BPF based counters) with cgroups.
 
 - Support HiSilicon PCIe Performance Monitoring Unit (PMU), that
   monitors bandwidth, latency, bus utilization and buffer occupancy.
 
   Documented in Documentation/admin-guide/perf/hisi-pcie-pmu.rst.
 
 - User space tasks can migrate between CPUs, so when tracing selected
   CPUs, system-wide sideband is still needed, fix it in the setup of
   Intel PT on hybrid systems.
 
 - Fix metricgroups title message in 'perf list', it should state that
   the metrics groups are to be used with the '-M' option, not '-e'.
 
 - Sync the msr-index.h copy with the kernel sources, adding support
   for using "AMD64_TSC_RATIO" in filter expressions in 'perf trace' as
   well as decoding it when printing the MSR tracepoint arguments.
 
 - Fix program header size and alignment when generating a JIT ELF
   in 'perf inject'.
 
 - Add multiple new Intel PT 'perf test' entries, including a jitdump one.
 
 - Fix the 'perf test' entries for 'perf stat' CSV and JSON output when
   running on PowerPC due to an invalid topology number in that arch.
 
 - Fix the 'perf test' for arm_coresight failures on the ARM Juno system.
 
 - Fix the 'perf test' attr entry for PERF_FORMAT_LOST, adding this option
   to the or expression expected in the intercepted perf_event_open() syscall.
 
 - Add missing condition flags ('hs', 'lo', 'vc', 'vs') for arm64 in the 'perf
   annotate' asm parser.
 
 - Fix 'perf mem record -C' option processing, it was being chopped up
   when preparing the underlying 'perf record -e mem-events' and thus being
   ignored, requiring using '-- -C CPUs' as a workaround.
 
 - Improvements and tidy ups for 'perf test' shell infra.
 
 - Fix Intel PT information printing segfault in uClibc, where a NULL
   format was being passed to fprintf.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-for-v6.1-2-2022-10-16' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull more perf tools updates from Arnaldo Carvalho de Melo:

 - Use BPF CO-RE (Compile Once, Run Everywhere) to support old kernels
   when using bperf (perf BPF based counters) with cgroups.

 - Support HiSilicon PCIe Performance Monitoring Unit (PMU), that
   monitors bandwidth, latency, bus utilization and buffer occupancy.

   Documented in Documentation/admin-guide/perf/hisi-pcie-pmu.rst.

 - User space tasks can migrate between CPUs, so when tracing selected
   CPUs, system-wide sideband is still needed, fix it in the setup of
   Intel PT on hybrid systems.

 - Fix metricgroups title message in 'perf list', it should state that
   the metrics groups are to be used with the '-M' option, not '-e'.

 - Sync the msr-index.h copy with the kernel sources, adding support for
   using "AMD64_TSC_RATIO" in filter expressions in 'perf trace' as well
   as decoding it when printing the MSR tracepoint arguments.

 - Fix program header size and alignment when generating a JIT ELF in
   'perf inject'.

 - Add multiple new Intel PT 'perf test' entries, including a jitdump
   one.

 - Fix the 'perf test' entries for 'perf stat' CSV and JSON output when
   running on PowerPC due to an invalid topology number in that arch.

 - Fix the 'perf test' for arm_coresight failures on the ARM Juno
   system.

 - Fix the 'perf test' attr entry for PERF_FORMAT_LOST, adding this
   option to the or expression expected in the intercepted
   perf_event_open() syscall.

 - Add missing condition flags ('hs', 'lo', 'vc', 'vs') for arm64 in the
   'perf annotate' asm parser.

 - Fix 'perf mem record -C' option processing, it was being chopped up
   when preparing the underlying 'perf record -e mem-events' and thus
   being ignored, requiring using '-- -C CPUs' as a workaround.

 - Improvements and tidy ups for 'perf test' shell infra.

 - Fix Intel PT information printing segfault in uClibc, where a NULL
   format was being passed to fprintf.

* tag 'perf-tools-for-v6.1-2-2022-10-16' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (23 commits)
  tools arch x86: Sync the msr-index.h copy with the kernel sources
  perf auxtrace arm64: Add support for parsing HiSilicon PCIe Trace packet
  perf auxtrace arm64: Add support for HiSilicon PCIe Tune and Trace device driver
  perf auxtrace arm: Refactor event list iteration in auxtrace_record__init()
  perf tests stat+json_output: Include sanity check for topology
  perf tests stat+csv_output: Include sanity check for topology
  perf intel-pt: Fix system_wide dummy event for hybrid
  perf intel-pt: Fix segfault in intel_pt_print_info() with uClibc
  perf test: Fix attr tests for PERF_FORMAT_LOST
  perf test: test_intel_pt.sh: Add 9 tests
  perf inject: Fix GEN_ELF_TEXT_OFFSET for jit
  perf test: test_intel_pt.sh: Add jitdump test
  perf test: test_intel_pt.sh: Tidy some alignment
  perf test: test_intel_pt.sh: Print a message when skipping kernel tracing
  perf test: test_intel_pt.sh: Tidy some perf record options
  perf test: test_intel_pt.sh: Fix return checking again
  perf: Skip and warn on unknown format 'configN' attrs
  perf list: Fix metricgroups title message
  perf mem: Fix -C option behavior for perf mem record
  perf annotate: Add missing condition flags for arm64
  ...
2022-10-16 15:14:29 -07:00
Arnaldo Carvalho de Melo a3a365655a tools arch x86: Sync the msr-index.h copy with the kernel sources
To pick up the changes in:

  b8d1d16360 ("x86/apic: Don't disable x2APIC if locked")
  ca5b7c0d96 ("perf/x86/amd/lbr: Add LbrExtV2 branch record support")

Addressing these tools/perf build warnings:

    diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h
    Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h'

That makes the beautification scripts to pick some new entries:

  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before
  $ cp arch/x86/include/asm/msr-index.h tools/arch/x86/include/asm/msr-index.h
  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > after
  $ diff -u before after
  --- before	2022-10-14 18:06:34.294561729 -0300
  +++ after	2022-10-14 18:06:41.285744044 -0300
  @@ -264,6 +264,7 @@
   	[0xc0000102 - x86_64_specific_MSRs_offset] = "KERNEL_GS_BASE",
   	[0xc0000103 - x86_64_specific_MSRs_offset] = "TSC_AUX",
   	[0xc0000104 - x86_64_specific_MSRs_offset] = "AMD64_TSC_RATIO",
  +	[0xc000010e - x86_64_specific_MSRs_offset] = "AMD64_LBR_SELECT",
   	[0xc000010f - x86_64_specific_MSRs_offset] = "AMD_DBG_EXTN_CFG",
   	[0xc0000300 - x86_64_specific_MSRs_offset] = "AMD64_PERF_CNTR_GLOBAL_STATUS",
   	[0xc0000301 - x86_64_specific_MSRs_offset] = "AMD64_PERF_CNTR_GLOBAL_CTL",
  $

Now one can trace systemwide asking to see backtraces to where that MSR
is being read/written, see this example with a previous update:

  # perf trace -e msr:*_msr/max-stack=32/ --filter="msr>=IA32_U_CET && msr<=IA32_INT_SSP_TAB"
  ^C#

If we use -v (verbose mode) we can see what it does behind the scenes:

  # perf trace -v -e msr:*_msr/max-stack=32/ --filter="msr>=IA32_U_CET && msr<=IA32_INT_SSP_TAB"
  Using CPUID AuthenticAMD-25-21-0
  0x6a0
  0x6a8
  New filter for msr:read_msr: (msr>=0x6a0 && msr<=0x6a8) && (common_pid != 597499 && common_pid != 3313)
  0x6a0
  0x6a8
  New filter for msr:write_msr: (msr>=0x6a0 && msr<=0x6a8) && (common_pid != 597499 && common_pid != 3313)
  mmap size 528384B
  ^C#

Example with a frequent msr:

  # perf trace -v -e msr:*_msr/max-stack=32/ --filter="msr==IA32_SPEC_CTRL" --max-events 2
  Using CPUID AuthenticAMD-25-21-0
  0x48
  New filter for msr:read_msr: (msr==0x48) && (common_pid != 2612129 && common_pid != 3841)
  0x48
  New filter for msr:write_msr: (msr==0x48) && (common_pid != 2612129 && common_pid != 3841)
  mmap size 528384B
  Looking at the vmlinux_path (8 entries long)
  symsrc__init: build id mismatch for vmlinux.
  Using /proc/kcore for kernel data
  Using /proc/kallsyms for symbols
     0.000 Timer/2525383 msr:write_msr(msr: IA32_SPEC_CTRL, val: 6)
                                       do_trace_write_msr ([kernel.kallsyms])
                                       do_trace_write_msr ([kernel.kallsyms])
                                       __switch_to_xtra ([kernel.kallsyms])
                                       __switch_to ([kernel.kallsyms])
                                       __schedule ([kernel.kallsyms])
                                       schedule ([kernel.kallsyms])
                                       futex_wait_queue_me ([kernel.kallsyms])
                                       futex_wait ([kernel.kallsyms])
                                       do_futex ([kernel.kallsyms])
                                       __x64_sys_futex ([kernel.kallsyms])
                                       do_syscall_64 ([kernel.kallsyms])
                                       entry_SYSCALL_64_after_hwframe ([kernel.kallsyms])
                                       __futex_abstimed_wait_common64 (/usr/lib64/libpthread-2.33.so)
     0.030 :0/0 msr:write_msr(msr: IA32_SPEC_CTRL, val: 2)
                                       do_trace_write_msr ([kernel.kallsyms])
                                       do_trace_write_msr ([kernel.kallsyms])
                                       __switch_to_xtra ([kernel.kallsyms])
                                       __switch_to ([kernel.kallsyms])
                                       __schedule ([kernel.kallsyms])
                                       schedule_idle ([kernel.kallsyms])
                                       do_idle ([kernel.kallsyms])
                                       cpu_startup_entry ([kernel.kallsyms])
                                       secondary_startup_64_no_verify ([kernel.kallsyms])
  #

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Daniel Sneddon <daniel.sneddon@linux.intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Link: https://lore.kernel.org/lkml/Y0nQkz2TUJxwfXJd@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
Qi Liu 5e91e57e68 perf auxtrace arm64: Add support for parsing HiSilicon PCIe Trace packet
Add support for using 'perf report --dump-raw-trace' to parse PTT packet.

Example usage:

Output will contain raw PTT data and its textual representation, such
as (8DW format):

0 0 0x5810 [0x30]: PERF_RECORD_AUXTRACE size: 0x400000  offset: 0
ref: 0xa5d50c725  idx: 0  tid: -1  cpu: 0
.
. ... HISI PTT data: size 4194304 bytes
.  00000000: 00 00 00 00                                 Prefix
.  00000004: 08 20 00 60                                 Header DW0
.  00000008: ff 02 00 01                                 Header DW1
.  0000000c: 20 08 00 00                                 Header DW2
.  00000010: 10 e7 44 ab                                 Header DW3
.  00000014: 2a a8 1e 01                                 Time
.  00000020: 00 00 00 00                                 Prefix
.  00000024: 01 00 00 60                                 Header DW0
.  00000028: 0f 1e 00 01                                 Header DW1
.  0000002c: 04 00 00 00                                 Header DW2
.  00000030: 40 00 81 02                                 Header DW3
.  00000034: ee 02 00 00                                 Time
....

This patch only add basic parsing support according to the definition of
the PTT packet described in Documentation/trace/hisi-ptt.rst. And the
fields of each packet can be further decoded following the PCIe Spec's
definition of TLP packet.

Signed-off-by: Qi Liu <liuqi115@huawei.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Bjorn Helgaas <helgaas@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Jonathan Cameron <jonathan.cameron@huawei.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Qi Liu <liuqi6124@gmail.com>
Cc: Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Zeng Prime <prime.zeng@huawei.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-pci@vger.kernel.org
Cc: linuxarm@huawei.com
Link: https://lore.kernel.org/r/20220927081400.14364-4-yangyicong@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
Qi Liu 057381a7ec perf auxtrace arm64: Add support for HiSilicon PCIe Tune and Trace device driver
HiSilicon PCIe tune and trace device (PTT) could dynamically tune the
PCIe link's events, and trace the TLP headers).

This patch add support for PTT device in perf tool, so users could use
'perf record' to get TLP headers trace data.

Reviewed-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Qi Liu <liuqi115@huawei.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Acked-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Bjorn Helgaas <helgaas@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jonathan Cameron <jonathan.cameron@huawei.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Qi Liu <liuqi6124@gmail.com>
Cc: Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Zeng Prime <prime.zeng@huawei.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-pci@vger.kernel.org
Cc: linuxarm@huawei.com
Link: https://lore.kernel.org/r/20220927081400.14364-3-yangyicong@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
Qi Liu 45a3975f8e perf auxtrace arm: Refactor event list iteration in auxtrace_record__init()
Add find_pmu_for_event() and use to simplify logic in
auxtrace_record_init(). find_pmu_for_event() will be reused in
subsequent patches.

Reviewed-by: John Garry <john.garry@huawei.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Qi Liu <liuqi115@huawei.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Bjorn Helgaas <helgaas@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Qi Liu <liuqi6124@gmail.com>
Cc: Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Zeng Prime <prime.zeng@huawei.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-pci@vger.kernel.org
Cc: linuxarm@huawei.com
Link: https://lore.kernel.org/r/20220927081400.14364-2-yangyicong@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
Athira Rajeev 58d4802a5e perf tests stat+json_output: Include sanity check for topology
Testcase stat+json_output.sh fails in powerpc:

	86: perf stat JSON output linter : FAILED!

The testcase "stat+json_output.sh" verifies perf stat JSON output. The
test covers aggregation modes like per-socket, per-core, per-die, -A
(no_aggr mode) along with few other tests. It counts expected fields for
various commands. For example say -A (i.e, AGGR_NONE mode), expects 7
fields in the output having "CPU" as first field. Same way, for
per-socket, it expects the first field in result to point to socket id.
The testcases compares the result with expected count.

The values for socket, die, core and cpu are fetched from topology
directory:

  /sys/devices/system/cpu/cpu*/topology.

For example, socket value is fetched from "physical_package_id" file of
topology directory.  (cpu__get_topology_int() in util/cpumap.c)

If a platform fails to fetch the topology information, values will be
set to -1. For example, incase of pSeries platform of powerpc, value for
"physical_package_id" is restricted and not exposed. So, -1 will be
assigned.

Perf code has a checks for valid cpu id in "aggr_printout"
(stat-display.c), which displays the fields. So, in cases where topology
values not exposed, first field of the output displaying will be empty.
This cause the testcase to fail, as it counts  number of fields in the
output.

Incase of -A (AGGR_NONE mode,), testcase expects 7 fields in the output,
becos of -1 value obtained from topology files for some, only 6 fields
are printed. Hence a testcase failure reported due to mismatch in number
of fields in the output.

Patch here adds a sanity check in the testcase for topology.  Check will
help to skip the test if -1 value found.

Fixes: 0c343af2a2 ("perf test: JSON format checking")
Reported-by: Disha Goel <disgoel@linux.vnet.ibm.com>
Suggested-by: Ian Rogers <irogers@google.com>
Suggested-by: James Clark <james.clark@arm.com>
Signed-off-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Claire Jensen <cjense@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nageswara R Sastry <rnsastry@linux.ibm.com>
Link: https://lore.kernel.org/r/20221006155149.67205-2-atrajeev@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
Athira Rajeev cd400f6f18 perf tests stat+csv_output: Include sanity check for topology
Testcase stat+csv_output.sh fails in powerpc:

	84: perf stat CSV output linter: FAILED!

The testcase "stat+csv_output.sh" verifies perf stat CSV output. The
test covers aggregation modes like per-socket, per-core, per-die, -A
(no_aggr mode) along with few other tests. It counts expected fields for
various commands. For example say -A (i.e, AGGR_NONE mode), expects 7
fields in the output having "CPU" as first field. Same way, for
per-socket, it expects the first field in result to point to socket id.
The testcases compares the result with expected count.

The values for socket, die, core and cpu are fetched from topology
directory:

  /sys/devices/system/cpu/cpu*/topology.

For example, socket value is fetched from "physical_package_id" file of
topology directory.  (cpu__get_topology_int() in util/cpumap.c)

If a platform fails to fetch the topology information, values will be
set to -1. For example, incase of pSeries platform of powerpc, value for
"physical_package_id" is restricted and not exposed. So, -1 will be
assigned.

Perf code has a checks for valid cpu id in "aggr_printout"
(stat-display.c), which displays the fields. So, in cases where topology
values not exposed, first field of the output displaying will be empty.
This cause the testcase to fail, as it counts  number of fields in the
output.

Incase of -A (AGGR_NONE mode,), testcase expects 7 fields in the output,
becos of -1 value obtained from topology files for some, only 6 fields
are printed. Hence a testcase failure reported due to mismatch in number
of fields in the output.

Patch here adds a sanity check in the testcase for topology.  Check will
help to skip the test if -1 value found.

Fixes: 7473ee56db ("perf test: Add checking for perf stat CSV output.")
Reported-by: Disha Goel <disgoel@linux.vnet.ibm.com>
Suggested-by: Ian Rogers <irogers@google.com>
Suggested-by: James Clark <james.clark@arm.com>
Signed-off-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Claire Jensen <cjense@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nageswara R Sastry <rnsastry@linux.ibm.com>
Link: https://lore.kernel.org/r/20221006155149.67205-1-atrajeev@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
Adrian Hunter 6cef7dab3e perf intel-pt: Fix system_wide dummy event for hybrid
User space tasks can migrate between CPUs, so when tracing selected CPUs,
system-wide sideband is still needed, however evlist->core.has_user_cpus
is not set in the hybrid case, so check the target cpu_list instead.

Fixes: 7d189cadbe ("perf intel-pt: Track sideband system-wide when needed")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20221012082259.22394-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
Adrian Hunter 5a3d47071f perf intel-pt: Fix segfault in intel_pt_print_info() with uClibc
uClibc segfaulted because NULL was passed as the format to fprintf().

That happened because one of the format strings was missing and
intel_pt_print_info() didn't check that before calling fprintf().

Add the missing format string, and check format is not NULL before calling
fprintf().

Fixes: 11fa7cb86b ("perf tools: Pass Intel PT information for decoding MTC and CYC")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20221012082259.22394-2-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
James Clark e28039667c perf test: Fix attr tests for PERF_FORMAT_LOST
Since PERF_FORMAT_LOST was added, the default read format has that bit
set, so add it to the tests. Keep the old value as well so that the test
still passes on older kernels.

This fixes the following failure:

  expected read_format=0|4, got 20
  FAILED './tests/attr/test-record-C0' - match failure

Fixes: 85b425f31c8866e0 ("perf record: Set PERF_FORMAT_LOST by default")
Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221012094633.21669-2-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
Ammy Yi f77811a0f6 perf test: test_intel_pt.sh: Add 9 tests
Add tests:
	Test with MTC and TSC disabled
	Test with branches disabled
	Test with/without CYC
	Test recording with sample mode
	Test with kernel trace
	Test virtual LBR
	Test power events
	Test with TNT packets disabled
	Test with event_trace

These tests mostly check that perf record works with the corresponding
Intel PT config terms, sometimes also checking that certain packets do or
do not appear in the resulting trace as appropriate.

The "Test virtual LBR" is slightly trickier, using a Python script to
check that branch stacks are actually synthesized.

Signed-off-by: Ammy Yi <ammy.yi@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20221014170905.64069-8-adrian.hunter@intel.com
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
Adrian Hunter 89b15d0052 perf inject: Fix GEN_ELF_TEXT_OFFSET for jit
When a program header was added, it moved the text section but
GEN_ELF_TEXT_OFFSET was not updated.

Fix by adding the program header size and aligning.

Fixes: babd04386b ("perf jit: Include program header in ELF files")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Lieven Hey <lieven.hey@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20221014170905.64069-7-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
Adrian Hunter 973db24079 perf test: test_intel_pt.sh: Add jitdump test
Add a test for decoding self-modifying code using a jitdump file.

The test creates a workload that uses self-modifying code and generates its
own jitdump file.  The result is processed with perf inject --jit and
checked for decoding errors.

Note the test will fail without patch "perf inject: Fix GEN_ELF_TEXT_OFFSET
for jit" applied.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20221014170905.64069-6-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
Adrian Hunter 40053a4b7e perf test: test_intel_pt.sh: Tidy some alignment
Tidy alignment of test function lines to make them more readable.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20221014170905.64069-5-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
Adrian Hunter 9637bf8ff0 perf test: test_intel_pt.sh: Print a message when skipping kernel tracing
Messages display with the perf test -v option. Add a message to show when
skipping a test because the user cannot do kernel tracing.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20221014170905.64069-4-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
Adrian Hunter 5021d82bca perf test: test_intel_pt.sh: Tidy some perf record options
When not decoding, the options "-B -N --no-bpf-event" speed up perf record.
Make a common function for them.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20221014170905.64069-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
Adrian Hunter e408049287 perf test: test_intel_pt.sh: Fix return checking again
count_result() does not always reset ret=0 which means the value can spill
into the next test result.

Fix by explicitly setting it to zero between tests.

Committer testing:

  # perf test "Miscellaneous Intel PT testing"
  110: Miscellaneous Intel PT testing               : Ok
  #

Tested as well with:

  # perf test -v "Miscellaneous Intel PT testing"

Fixes: fd9b45e39c ("perf test: test_intel_pt.sh: Fix return checking")
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20221014170905.64069-2-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-15 10:13:16 -03:00
Linus Torvalds 5e714bf171 - Alistair Popple has a series which addresses a race which causes page
refcounting errors in ZONE_DEVICE pages.
 
 - Peter Xu fixes some userfaultfd test harness instability.
 
 - Various other patches in MM, mainly fixes.
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Merge tag 'mm-stable-2022-10-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull more MM updates from Andrew Morton:

 - fix a race which causes page refcounting errors in ZONE_DEVICE pages
   (Alistair Popple)

 - fix userfaultfd test harness instability (Peter Xu)

 - various other patches in MM, mainly fixes

* tag 'mm-stable-2022-10-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (29 commits)
  highmem: fix kmap_to_page() for kmap_local_page() addresses
  mm/page_alloc: fix incorrect PGFREE and PGALLOC for high-order page
  mm/selftest: uffd: explain the write missing fault check
  mm/hugetlb: use hugetlb_pte_stable in migration race check
  mm/hugetlb: fix race condition of uffd missing/minor handling
  zram: always expose rw_page
  LoongArch: update local TLB if PTE entry exists
  mm: use update_mmu_tlb() on the second thread
  kasan: fix array-bounds warnings in tests
  hmm-tests: add test for migrate_device_range()
  nouveau/dmem: evict device private memory during release
  nouveau/dmem: refactor nouveau_dmem_fault_copy_one()
  mm/migrate_device.c: add migrate_device_range()
  mm/migrate_device.c: refactor migrate_vma and migrate_deivce_coherent_page()
  mm/memremap.c: take a pgmap reference on page allocation
  mm: free device private pages have zero refcount
  mm/memory.c: fix race when faulting a device private page
  mm/damon: use damon_sz_region() in appropriate place
  mm/damon: move sz_damon_region to damon_sz_region
  lib/test_meminit: add checks for the allocation functions
  ...
2022-10-14 12:28:43 -07:00
Rob Herring e552b7be12 perf: Skip and warn on unknown format 'configN' attrs
If the kernel exposes a new perf_event_attr field in a format attr, perf
will return an error stating the specified PMU can't be found. For
example, a format attr with 'config3:0-63' causes an error as config3 is
unknown to perf. This causes a compatibility issue between a newer
kernel with older perf tool.

Before this change with a kernel adding 'config3' I get:

  $ perf record -e arm_spe// -- true
  event syntax error: 'arm_spe//'
                       \___ Cannot find PMU `arm_spe'. Missing kernel support?
  Run 'perf list' for a list of valid events

   Usage: perf record [<options>] [<command>]
      or: perf record [<options>] -- <command> [<options>]

      -e, --event <event>   event selector. use 'perf list' to list
  available events

After this change, I get:

  $ perf record -e arm_spe// -- true
  WARNING: 'arm_spe_0' format 'inv_event_filter' requires 'perf_event_attr::config3' which is not supported by this version of perf!
  [ perf record: Woken up 2 times to write data ]
  [ perf record: Captured and wrote 0.091 MB perf.data ]

To support unknown configN formats, rework the YACC implementation to
pass any config[0-9]+ format to perf_pmu__new_format() to handle with a
warning.

Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220914-arm-perf-tool-spe1-2-v2-v4-1-83c098e6212e@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-14 12:23:09 -03:00
Andi Kleen 0cef141e86 perf list: Fix metricgroups title message
$ perf list metricgroups

gives

  List of pre-defined events (to be used in -e):

  Metric Groups:

  Backend
  Bad
  BadSpec

But that's incorrect of course because metric groups or metrics can only
be specified with -M. So fix the message to say -e or -M

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20221004192634.998984-1-ak@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-14 12:21:42 -03:00
Namhyung Kim 7d60fa2cde perf mem: Fix -C option behavior for perf mem record
The -C/--cpu option was maily for report but it also affected record as
it ate the option.  So users needed to use "--" after perf mem record to
pass the info to the perf record properly.

Check if this option is set for record, and pass it to the actual perf
record.

Before)
  $ sudo perf --debug perf-event-open mem record -C 0 2>&1 | grep -a sys_perf_event_open
  ...
  sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 4
  sys_perf_event_open: pid -1  cpu 1  group_fd -1  flags 0x8 = 5
  sys_perf_event_open: pid -1  cpu 2  group_fd -1  flags 0x8 = 6
  sys_perf_event_open: pid -1  cpu 3  group_fd -1  flags 0x8 = 7
  sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 8
  sys_perf_event_open: pid -1  cpu 1  group_fd -1  flags 0x8 = 9
  sys_perf_event_open: pid -1  cpu 2  group_fd -1  flags 0x8 = 10
  sys_perf_event_open: pid -1  cpu 3  group_fd -1  flags 0x8 = 11
  ...

After)
  $ sudo perf --debug perf-event-open mem record -C 0 2>&1 | grep -a sys_perf_event_open
  ...
  sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 4
  sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 5
  sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 6
  sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 7

Reported-by: Ravi Bangoria <ravi.bangoria@amd.com>
Reviewed-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221004200211.1444521-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-14 12:21:34 -03:00
Namhyung Kim 531778b129 perf annotate: Add missing condition flags for arm64
According to the document [1], it can also have 'hs', 'lo', 'vc', 'vs' as a
condition code.  Let's add them too.

[1] https://community.arm.com/arm-community-blogs/b/architectures-and-processors-blog/posts/condition-codes-1-condition-flags-and-codes

Reported-by: Kevin Nomura <nomurak@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20221006222232.266416-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-14 10:47:35 -03:00
Arnaldo Carvalho de Melo d5e57375a5 libperf: Do not include non-UAPI linux/compiler.h header
Its just for that __packed define, so use it expanded as __attribute__((packed)),
like the other files in /usr/include do.

This was problem was preventing building the libperf examples on ALT
Linux and Fedora 35, fix it.

Reported-by: Vitaly Chikunov <vt@altlinux.org>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Dmitry Levin <ldv@altlinux.org
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/Y0lnpl2Ix7VljVDc@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-14 10:44:20 -03:00
James Clark fe180a5201 perf test: Fix test_arm_coresight.sh failures on Juno
This test commonly fails on Arm Juno because the instruction interval
is large enough to miss generating any samples for Perf in system-wide
mode.

Fix this by lowering the interval until a comfortable number of Perf
instructions are generated. The test is still quick to run because only
a small amount of trace is gathered.

Before:

  sudo ./perf test coresight -vvv
  ...
  Recording trace with system wide mode
  Looking at perf.data file for dumping branch samples:
  Looking at perf.data file for reporting branch samples:
  Looking at perf.data file for instruction samples:
  CoreSight system wide testing: FAIL
  ...

After:

  sudo ./perf test coresight -vvv
  ...
  Recording trace with system wide mode
  Looking at perf.data file for dumping branch samples:
  Looking at perf.data file for reporting branch samples:
  Looking at perf.data file for instruction samples:
  CoreSight system wide testing: PASS
  ...

Reviewed-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: James Clark <james.clark@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Link: https://lore.kernel.org/r/20221005140508.1537277-1-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-14 10:32:39 -03:00
Namhyung Kim f21cb52036 perf stat: Support old kernels for bperf cgroup counting
The recent change in the cgroup will break the backward compatiblity in
the BPF program.  It should support both old and new kernels using BPF
CO-RE technique.

Like the task_struct->__state handling in the offcpu analysis, we can
check the field name in the cgroup struct.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: bpf@vger.kernel.org
Cc: cgroups@vger.kernel.org
Cc: zefan li <lizefan.x@bytedance.com>
Link: http://lore.kernel.org/lkml/20221011052808.282394-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-14 10:29:05 -03:00
Hou Tao 62c69e89e8 selftests/bpf: Use sys_pidfd_open() helper when possible
SYS_pidfd_open may be undefined for old glibc, so using sys_pidfd_open()
helper defined in task_local_storage_helpers.h instead to fix potential
build failure.

And according to commit 7615d9e178 ("arch: wire-up pidfd_open()"), the
syscall number of pidfd_open is always 434 except for alpha architure,
so update the definition of __NR_pidfd_open accordingly.

Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221011071249.3471760-1-houtao@huaweicloud.com
2022-10-13 12:09:19 -07:00
Shung-Hsi Yu d0d382f95a libbpf: Fix null-pointer dereference in find_prog_by_sec_insn()
When there are no program sections, obj->programs is left unallocated,
and find_prog_by_sec_insn()'s search lands on &obj->programs[0] == NULL,
and will cause null-pointer dereference in the following access to
prog->sec_idx.

Guard the search with obj->nr_programs similar to what's being done in
__bpf_program__iter() to prevent null-pointer access from happening.

Fixes: db2b8b0642 ("libbpf: Support CO-RE relocations for multi-prog sections")
Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221012022353.7350-4-shung-hsi.yu@suse.com
2022-10-13 10:53:34 -07:00
Shung-Hsi Yu 35a855509e libbpf: Deal with section with no data gracefully
ELF section data pointer returned by libelf may be NULL (if section has
SHT_NOBITS), so null check section data pointer before attempting to
copy license and kversion section.

Fixes: cb1e5e9619 ("bpf tools: Collect version and license from ELF sections")
Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221012022353.7350-3-shung-hsi.yu@suse.com
2022-10-13 10:53:34 -07:00
Shung-Hsi Yu 51deedc9b8 libbpf: Use elf_getshdrnum() instead of e_shnum
This commit replace e_shnum with the elf_getshdrnum() helper to fix two
oss-fuzz-reported heap-buffer overflow in __bpf_object__open. Both
reports are incorrectly marked as fixed and while still being
reproducible in the latest libbpf.

  # clusterfuzz-testcase-minimized-bpf-object-fuzzer-5747922482888704
  libbpf: loading object 'fuzz-object' from buffer
  libbpf: sec_cnt is 0
  libbpf: elf: section(1) .data, size 0, link 538976288, flags 2020202020202020, type=2
  libbpf: elf: section(2) .data, size 32, link 538976288, flags 202020202020ff20, type=1
  =================================================================
  ==13==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6020000000c0 at pc 0x0000005a7b46 bp 0x7ffd12214af0 sp 0x7ffd12214ae8
  WRITE of size 4 at 0x6020000000c0 thread T0
  SCARINESS: 46 (4-byte-write-heap-buffer-overflow-far-from-bounds)
      #0 0x5a7b45 in bpf_object__elf_collect /src/libbpf/src/libbpf.c:3414:24
      #1 0x5733c0 in bpf_object_open /src/libbpf/src/libbpf.c:7223:16
      #2 0x5739fd in bpf_object__open_mem /src/libbpf/src/libbpf.c:7263:20
      ...

The issue lie in libbpf's direct use of e_shnum field in ELF header as
the section header count. Where as libelf implemented an extra logic
that, when e_shnum == 0 && e_shoff != 0, will use sh_size member of the
initial section header as the real section header count (part of ELF
spec to accommodate situation where section header counter is larger
than SHN_LORESERVE).

The above inconsistency lead to libbpf writing into a zero-entry calloc
area. So intead of using e_shnum directly, use the elf_getshdrnum()
helper provided by libelf to retrieve the section header counter into
sec_cnt.

Fixes: 0d6988e16a ("libbpf: Fix section counting logic")
Fixes: 25bbbd7a44 ("libbpf: Remove assumptions about uniqueness of .rodata/.data/.bss maps")
Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40868
Link: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40957
Link: https://lore.kernel.org/bpf/20221012022353.7350-2-shung-hsi.yu@suse.com
2022-10-13 10:53:34 -07:00
Xu Kuohai cbc1c998da selftest/bpf: Fix error usage of ASSERT_OK in xdp_adjust_tail.c
xdp_adjust_tail.c calls ASSERT_OK() to check the return value of
bpf_prog_test_load(), but the condition is not correct. Fix it.

Fixes: 791cad0250 ("bpf: selftests: Get rid of CHECK macro in xdp_adjust_tail.c")
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/bpf/20221011120108.782373-7-xukuohai@huaweicloud.com
2022-10-13 10:53:30 -07:00
Xu Kuohai 4abdb1d5b2 selftests/bpf: Fix error failure of case test_xdp_adjust_tail_grow
test_xdp_adjust_tail_grow failed with ipv6:
  test_xdp_adjust_tail_grow:FAIL:ipv6 unexpected error: -28 (errno 28)

The reason is that this test case tests ipv4 before ipv6, and when ipv4
test finished, topts.data_size_out was set to 54, which is smaller than the
ipv6 output data size 114, so ipv6 test fails with NOSPC error.

Fix it by reset topts.data_size_out to sizeof(buf) before testing ipv6.

Fixes: 04fcb5f9a1 ("selftests/bpf: Migrate from bpf_prog_test_run")
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/bpf/20221011120108.782373-6-xukuohai@huaweicloud.com
2022-10-13 10:53:28 -07:00
Xu Kuohai 6d2e21dc4d selftest/bpf: Fix memory leak in kprobe_multi_test
The get_syms() function in kprobe_multi_test.c does not free the string
memory allocated by sscanf correctly. Fix it.

Fixes: 5b6c7e5c44 ("selftests/bpf: Add attach bench test")
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/bpf/20221011120108.782373-5-xukuohai@huaweicloud.com
2022-10-13 10:53:24 -07:00
Xu Kuohai 6e8280b958 selftests/bpf: Fix memory leak caused by not destroying skeleton
Some test cases does not destroy skeleton object correctly, causing ASAN
to report memory leak warning. Fix it.

Fixes: 0ef6740e97 ("selftests/bpf: Add tests for kptr_ref refcounting")
Fixes: 1642a3945e ("selftests/bpf: Add struct argument tests with fentry/fexit programs.")
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/bpf/20221011120108.782373-4-xukuohai@huaweicloud.com
2022-10-13 10:53:22 -07:00
Xu Kuohai 0dc9254e03 libbpf: Fix memory leak in parse_usdt_arg()
In the arm64 version of parse_usdt_arg(), when sscanf returns 2, reg_name
is allocated but not freed. Fix it.

Fixes: 0f8619929c ("libbpf: Usdt aarch64 arg parsing support")
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/bpf/20221011120108.782373-3-xukuohai@huaweicloud.com
2022-10-13 10:53:18 -07:00
Xu Kuohai 93c660ca40 libbpf: Fix use-after-free in btf_dump_name_dups
ASAN reports an use-after-free in btf_dump_name_dups:

ERROR: AddressSanitizer: heap-use-after-free on address 0xffff927006db at pc 0xaaaab5dfb618 bp 0xffffdd89b890 sp 0xffffdd89b928
READ of size 2 at 0xffff927006db thread T0
    #0 0xaaaab5dfb614 in __interceptor_strcmp.part.0 (test_progs+0x21b614)
    #1 0xaaaab635f144 in str_equal_fn tools/lib/bpf/btf_dump.c:127
    #2 0xaaaab635e3e0 in hashmap_find_entry tools/lib/bpf/hashmap.c:143
    #3 0xaaaab635e72c in hashmap__find tools/lib/bpf/hashmap.c:212
    #4 0xaaaab6362258 in btf_dump_name_dups tools/lib/bpf/btf_dump.c:1525
    #5 0xaaaab636240c in btf_dump_resolve_name tools/lib/bpf/btf_dump.c:1552
    #6 0xaaaab6362598 in btf_dump_type_name tools/lib/bpf/btf_dump.c:1567
    #7 0xaaaab6360b48 in btf_dump_emit_struct_def tools/lib/bpf/btf_dump.c:912
    #8 0xaaaab6360630 in btf_dump_emit_type tools/lib/bpf/btf_dump.c:798
    #9 0xaaaab635f720 in btf_dump__dump_type tools/lib/bpf/btf_dump.c:282
    #10 0xaaaab608523c in test_btf_dump_incremental tools/testing/selftests/bpf/prog_tests/btf_dump.c:236
    #11 0xaaaab6097530 in test_btf_dump tools/testing/selftests/bpf/prog_tests/btf_dump.c:875
    #12 0xaaaab6314ed0 in run_one_test tools/testing/selftests/bpf/test_progs.c:1062
    #13 0xaaaab631a0a8 in main tools/testing/selftests/bpf/test_progs.c:1697
    #14 0xffff9676d214 in __libc_start_main ../csu/libc-start.c:308
    #15 0xaaaab5d65990  (test_progs+0x185990)

0xffff927006db is located 11 bytes inside of 16-byte region [0xffff927006d0,0xffff927006e0)
freed by thread T0 here:
    #0 0xaaaab5e2c7c4 in realloc (test_progs+0x24c7c4)
    #1 0xaaaab634f4a0 in libbpf_reallocarray tools/lib/bpf/libbpf_internal.h:191
    #2 0xaaaab634f840 in libbpf_add_mem tools/lib/bpf/btf.c:163
    #3 0xaaaab636643c in strset_add_str_mem tools/lib/bpf/strset.c:106
    #4 0xaaaab6366560 in strset__add_str tools/lib/bpf/strset.c:157
    #5 0xaaaab6352d70 in btf__add_str tools/lib/bpf/btf.c:1519
    #6 0xaaaab6353e10 in btf__add_field tools/lib/bpf/btf.c:2032
    #7 0xaaaab6084fcc in test_btf_dump_incremental tools/testing/selftests/bpf/prog_tests/btf_dump.c:232
    #8 0xaaaab6097530 in test_btf_dump tools/testing/selftests/bpf/prog_tests/btf_dump.c:875
    #9 0xaaaab6314ed0 in run_one_test tools/testing/selftests/bpf/test_progs.c:1062
    #10 0xaaaab631a0a8 in main tools/testing/selftests/bpf/test_progs.c:1697
    #11 0xffff9676d214 in __libc_start_main ../csu/libc-start.c:308
    #12 0xaaaab5d65990  (test_progs+0x185990)

previously allocated by thread T0 here:
    #0 0xaaaab5e2c7c4 in realloc (test_progs+0x24c7c4)
    #1 0xaaaab634f4a0 in libbpf_reallocarray tools/lib/bpf/libbpf_internal.h:191
    #2 0xaaaab634f840 in libbpf_add_mem tools/lib/bpf/btf.c:163
    #3 0xaaaab636643c in strset_add_str_mem tools/lib/bpf/strset.c:106
    #4 0xaaaab6366560 in strset__add_str tools/lib/bpf/strset.c:157
    #5 0xaaaab6352d70 in btf__add_str tools/lib/bpf/btf.c:1519
    #6 0xaaaab6353ff0 in btf_add_enum_common tools/lib/bpf/btf.c:2070
    #7 0xaaaab6354080 in btf__add_enum tools/lib/bpf/btf.c:2102
    #8 0xaaaab6082f50 in test_btf_dump_incremental tools/testing/selftests/bpf/prog_tests/btf_dump.c:162
    #9 0xaaaab6097530 in test_btf_dump tools/testing/selftests/bpf/prog_tests/btf_dump.c:875
    #10 0xaaaab6314ed0 in run_one_test tools/testing/selftests/bpf/test_progs.c:1062
    #11 0xaaaab631a0a8 in main tools/testing/selftests/bpf/test_progs.c:1697
    #12 0xffff9676d214 in __libc_start_main ../csu/libc-start.c:308
    #13 0xaaaab5d65990  (test_progs+0x185990)

The reason is that the key stored in hash table name_map is a string
address, and the string memory is allocated by realloc() function, when
the memory is resized by realloc() later, the old memory may be freed,
so the address stored in name_map references to a freed memory, causing
use-after-free.

Fix it by storing duplicated string address in name_map.

Fixes: 919d2b1dbb ("libbpf: Allow modification of BTF and add btf__add_str API")
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/bpf/20221011120108.782373-2-xukuohai@huaweicloud.com
2022-10-13 10:53:03 -07:00
Linus Torvalds 66ae04368e Including fixes from netfilter, and wifi.
Current release - regressions:
 
  - Revert "net/sched: taprio: make qdisc_leaf() see
    the per-netdev-queue pfifo child qdiscs", it may cause crashes
    when the qdisc is reconfigured
 
  - inet: ping: fix splat due to packet allocation refactoring in inet
 
  - tcp: clean up kernel listener's reqsk in inet_twsk_purge(),
    fix UAF due to races when per-netns hash table is used
 
 Current release - new code bugs:
 
  - eth: adin1110: check in netdev_event that netdev belongs to driver
 
  - fixes for PTR_ERR() vs NULL bugs in driver code, from Dan and co.
 
 Previous releases - regressions:
 
  - ipv4: handle attempt to delete multipath route when fib_info
    contains an nh reference, avoid oob access
 
  - wifi: fix handful of bugs in the new Multi-BSSID code
 
  - wifi: mt76: fix rate reporting / throughput regression on mt7915
    and newer, fix checksum offload
 
  - wifi: iwlwifi: mvm: fix double list_add at
    iwl_mvm_mac_wake_tx_queue (other cases)
 
  - wifi: mac80211: do not drop packets smaller than the LLC-SNAP
    header on fast-rx
 
 Previous releases - always broken:
 
  - ieee802154: don't warn zero-sized raw_sendmsg()
 
  - ipv6: ping: fix wrong checksum for large frames
 
  - mctp: prevent double key removal and unref
 
  - tcp/udp: fix memory leaks and races around IPV6_ADDRFORM
 
  - hv_netvsc: fix race between VF offering and VF association message
 
 Misc:
 
  - remove -Warray-bounds silencing in the drivers, compilers fixed
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from netfilter, and wifi.

Current release - regressions:

   - Revert "net/sched: taprio: make qdisc_leaf() see the
     per-netdev-queue pfifo child qdiscs", it may cause crashes when the
     qdisc is reconfigured

   - inet: ping: fix splat due to packet allocation refactoring in inet

   - tcp: clean up kernel listener's reqsk in inet_twsk_purge(), fix UAF
     due to races when per-netns hash table is used

  Current release - new code bugs:

   - eth: adin1110: check in netdev_event that netdev belongs to driver

   - fixes for PTR_ERR() vs NULL bugs in driver code, from Dan and co.

  Previous releases - regressions:

   - ipv4: handle attempt to delete multipath route when fib_info
     contains an nh reference, avoid oob access

   - wifi: fix handful of bugs in the new Multi-BSSID code

   - wifi: mt76: fix rate reporting / throughput regression on mt7915
     and newer, fix checksum offload

   - wifi: iwlwifi: mvm: fix double list_add at
     iwl_mvm_mac_wake_tx_queue (other cases)

   - wifi: mac80211: do not drop packets smaller than the LLC-SNAP
     header on fast-rx

  Previous releases - always broken:

   - ieee802154: don't warn zero-sized raw_sendmsg()

   - ipv6: ping: fix wrong checksum for large frames

   - mctp: prevent double key removal and unref

   - tcp/udp: fix memory leaks and races around IPV6_ADDRFORM

   - hv_netvsc: fix race between VF offering and VF association message

  Misc:

   - remove -Warray-bounds silencing in the drivers, compilers fixed"

* tag 'net-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (73 commits)
  sunhme: fix an IS_ERR() vs NULL check in probe
  net: marvell: prestera: fix a couple NULL vs IS_ERR() checks
  kcm: avoid potential race in kcm_tx_work
  tcp: Clean up kernel listener's reqsk in inet_twsk_purge()
  net: phy: micrel: Fixes FIELD_GET assertion
  openvswitch: add nf_ct_is_confirmed check before assigning the helper
  tcp: Fix data races around icsk->icsk_af_ops.
  ipv6: Fix data races around sk->sk_prot.
  tcp/udp: Call inet6_destroy_sock() in IPv6 sk->sk_destruct().
  udp: Call inet6_destroy_sock() in setsockopt(IPV6_ADDRFORM).
  tcp/udp: Fix memory leak in ipv6_renew_options().
  mctp: prevent double key removal and unref
  selftests: netfilter: Fix nft_fib.sh for all.rp_filter=1
  netfilter: rpfilter/fib: Populate flowic_l3mdev field
  selftests: netfilter: Test reverse path filtering
  net/mlx5: Make ASO poll CQ usable in atomic context
  tcp: cdg: allow tcp_cdg_release() to be called multiple times
  inet: ping: fix recent breakage
  ipv6: ping: fix wrong checksum for large frames
  net: ethernet: ti: am65-cpsw: set correct devlink flavour for unused ports
  ...
2022-10-13 10:51:01 -07:00
David Vernet 6e44b9f375 selftests/bpf: Make bpf_user_ringbuf_drain() selftest callback return 1
In commit 1bfe26fb08 ("bpf: Add verifier support for custom callback
return range"), the verifier was updated to require callbacks to BPF
helpers to explicitly specify the range of values that can be returned.
bpf_user_ringbuf_drain() was merged after this in commit 2057156738
("bpf: Add bpf_user_ringbuf_drain() helper"), and this change in default
behavior was missed. This patch updates the BPF_MAP_TYPE_USER_RINGBUF
selftests to also return 1 from a bpf_user_ringbuf_drain() callback so
as to properly test this going forward.

Signed-off-by: David Vernet <void@manifault.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221012232015.1510043-3-void@manifault.com
2022-10-13 08:27:38 -07:00
Martin KaFai Lau de9c8d848d selftests/bpf: S/iptables/iptables-legacy/ in the bpf_nf and xdp_synproxy test
The recent vm image in CI has reported error in selftests that use
the iptables command.  Manu Bretelle has pointed out the difference
in the recent vm image that the iptables is sym-linked to the iptables-nft.
With this knowledge,  I can also reproduce the CI error by manually running
with the 'iptables-nft'.

This patch is to replace the iptables command with iptables-legacy
to unblock the CI tests.

Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/bpf/20221012221235.3529719-1-martin.lau@linux.dev
2022-10-13 08:03:04 -07:00
Gavin Shan 05c2224d4b KVM: selftests: Fix number of pages for memory slot in memslot_modification_stress_test
It's required by vm_userspace_mem_region_add() that memory size
should be aligned to host page size. However, one guest page is
provided by memslot_modification_stress_test. It triggers failure
in the scenario of 64KB-page-size-host and 4KB-page-size-guest,
as the following messages indicate.

 # ./memslot_modification_stress_test
 Testing guest mode: PA-bits:40,  VA-bits:48,  4K pages
 guest physical test memory: [0xffbfff0000, 0xffffff0000)
 Finished creating vCPUs
 Started all vCPUs
 ==== Test Assertion Failure ====
   lib/kvm_util.c:824: vm_adjust_num_guest_pages(vm->mode, npages) == npages
   pid=5712 tid=5712 errno=0 - Success
      1	0x0000000000404eeb: vm_userspace_mem_region_add at kvm_util.c:822
      2	0x0000000000401a5b: add_remove_memslot at memslot_modification_stress_test.c:82
      3	 (inlined by) run_test at memslot_modification_stress_test.c:110
      4	0x0000000000402417: for_each_guest_mode at guest_modes.c:100
      5	0x00000000004016a7: main at memslot_modification_stress_test.c:187
      6	0x0000ffffb8cd4383: ?? ??:0
      7	0x0000000000401827: _start at :?
   Number of guest pages is not compatible with the host. Try npages=16

Fix the issue by providing 16 guest pages to the memory slot for this
particular combination of 64KB-page-size-host and 4KB-page-size-guest
on aarch64.

Fixes: ef4c9f4f65 ("KVM: selftests: Fix 32-bit truncation of vm_get_max_gfn()")
Signed-off-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221013063020.201856-1-gshan@redhat.com
2022-10-13 11:46:51 +01:00
Peter Xu 26c92d37d3 mm/selftest: uffd: explain the write missing fault check
It's not obvious why we had a write check for each of the missing
messages, especially when it should be a locking op.  Add a rich comment
for that, and also try to explain its good side and limitations, so that
if someone hit it again for either a bug or a different glibc impl
there'll be some clue to start with.

Link: https://lkml.kernel.org/r/20221004193400.110155-4-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Nadav Amit <nadav.amit@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-10-12 18:51:50 -07:00
Alistair Popple ad4c365221 hmm-tests: add test for migrate_device_range()
Link: https://lkml.kernel.org/r/a73cf109de0224cfd118d22be58ddebac3ae2897.1664366292.git-series.apopple@nvidia.com
Signed-off-by: Alistair Popple <apopple@nvidia.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Alex Sierra <alex.sierra@amd.com>
Cc: Felix Kuehling <Felix.Kuehling@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-10-12 18:51:50 -07:00
Linus Torvalds a185a09955 linux-kselftest-kunit-6.1-rc1-2
This second KUnit update for Linux 6.1-rc1 consists of features and
 fixes:
 
 - simplifying resource use.
 - make kunit_malloc() and kunit_free() allocations and frees consistent.
   kunit_free() frees only the memory allocated by kunit_malloc().
 - stop downloading risc-v  opensbi binaries using wget.
 - other fixes and improvements to tool and KUnit framework.
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Merge tag 'linux-kselftest-kunit-6.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull more KUnit updates from Shuah Khan:
 "Features and fixes:

   - simplify resource use

   - make kunit_malloc() and kunit_free() allocations and frees
     consistent. kunit_free() frees only the memory allocated by
     kunit_malloc()

   - stop downloading risc-v opensbi binaries using wget

   - other fixes and improvements to tool and KUnit framework"

* tag 'linux-kselftest-kunit-6.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  Documentation: kunit: Update description of --alltests option
  kunit: declare kunit_assert structs as const
  kunit: rename base KUNIT_ASSERTION macro to _KUNIT_FAILED
  kunit: remove format func from struct kunit_assert, get it to 0 bytes
  kunit: tool: Don't download risc-v opensbi firmware with wget
  kunit: make kunit_kfree(NULL) a no-op to match kfree()
  kunit: make kunit_kfree() not segfault on invalid inputs
  kunit: make kunit_kfree() only work on pointers from kunit_malloc() and friends
  kunit: drop test pointer in string_stream_fragment
  kunit: string-stream: Simplify resource use
2022-10-12 15:01:58 -07:00
Linus Torvalds 661e00960f linux-kselftest-next-6.1-rc1-2
This second Kselftest update for Linux 6.1-rc1 consists of fixes
 and improvements to memory-hotplug test and a minor spelling fix
 to ftrace test.
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Merge tag 'linux-kselftest-next-6.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull more Kselftest updates from Shuah Khan:
 "This consists of fixes and improvements to memory-hotplug test and a
  minor spelling fix to ftrace test"

* tag 'linux-kselftest-next-6.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  docs: notifier-error-inject: Correct test's name
  selftests/memory-hotplug: Adjust log info for maintainability
  selftests/memory-hotplug: Restore memory before exit
  selftests/memory-hotplug: Add checking after online or offline
  selftests/ftrace: func_event_triggers: fix typo in user message
2022-10-12 14:59:13 -07:00
Linus Torvalds 676cb49573 - hfs and hfsplus kmap API modernization from Fabio Francesco
- Valentin Schneider makes crash-kexec work properly when invoked from
   an NMI-time panic.
 
 - ntfs bugfixes from Hawkins Jiawei
 
 - Jiebin Sun improves IPC msg scalability by replacing atomic_t's with
   percpu counters.
 
 - nilfs2 cleanups from Minghao Chi
 
 - lots of other single patches all over the tree!
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Merge tag 'mm-nonmm-stable-2022-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

 - hfs and hfsplus kmap API modernization (Fabio Francesco)

 - make crash-kexec work properly when invoked from an NMI-time panic
   (Valentin Schneider)

 - ntfs bugfixes (Hawkins Jiawei)

 - improve IPC msg scalability by replacing atomic_t's with percpu
   counters (Jiebin Sun)

 - nilfs2 cleanups (Minghao Chi)

 - lots of other single patches all over the tree!

* tag 'mm-nonmm-stable-2022-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (71 commits)
  include/linux/entry-common.h: remove has_signal comment of arch_do_signal_or_restart() prototype
  proc: test how it holds up with mapping'less process
  mailmap: update Frank Rowand email address
  ia64: mca: use strscpy() is more robust and safer
  init/Kconfig: fix unmet direct dependencies
  ia64: update config files
  nilfs2: replace WARN_ONs by nilfs_error for checkpoint acquisition failure
  fork: remove duplicate included header files
  init/main.c: remove unnecessary (void*) conversions
  proc: mark more files as permanent
  nilfs2: remove the unneeded result variable
  nilfs2: delete unnecessary checks before brelse()
  checkpatch: warn for non-standard fixes tag style
  usr/gen_init_cpio.c: remove unnecessary -1 values from int file
  ipc/msg: mitigate the lock contention with percpu counter
  percpu: add percpu_counter_add_local and percpu_counter_sub_local
  fs/ocfs2: fix repeated words in comments
  relay: use kvcalloc to alloc page array in relay_alloc_page_array
  proc: make config PROC_CHILDREN depend on PROC_FS
  fs: uninline inode_maybe_inc_iversion()
  ...
2022-10-12 11:00:22 -07:00
Phil Sutter 6a91e72709 selftests: netfilter: Fix nft_fib.sh for all.rp_filter=1
If net.ipv4.conf.all.rp_filter is set, it overrides the per-interface
setting and thus defeats the fix from bbe4c0896d ("selftests:
netfilter: disable rp_filter on router"). Unset it as well to cover that
case.

Fixes: bbe4c0896d ("selftests: netfilter: disable rp_filter on router")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Florian Westphal <fw@strlen.de>
2022-10-12 14:08:15 +02:00
Phil Sutter 6e31ce831c selftests: netfilter: Test reverse path filtering
Test reverse path (filter) matches in iptables, ip6tables and nftables.
Both with a regular interface and a VRF.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
2022-10-12 14:08:15 +02:00
David Vernet d31ada3b51 selftests/bpf: Alphabetize DENYLISTs
The DENYLIST and DENYLIST.s390x files are used to specify testcases
which should not be run on CI. Currently, testcases are appended to the
end of these files as needed. This can make it a pain to resolve merge
conflicts. This patch alphabetizes the DENYLIST files to ease this
burden.

Signed-off-by: David Vernet <void@manifault.com>
Acked-by: Daniel Müller <deso@posteo.net>
Link: https://lore.kernel.org/r/20221011165255.774014-1-void@manifault.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2022-10-11 22:55:28 -07:00
Linus Torvalds 49da070062 memblock: test suite improvements
* Added verification that memblock allocations zero the allocated memory
 * Added more test cases for memblock_add(), memblock_remove(),
   memblock_reserve() and memblock_free()
 * Added tests for memblock_*_raw() family
 * Added tests for NUMA-aware allocations in memblock_alloc_try_nid() and
   memblock_alloc_try_nid_raw()
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Merge tag 'memblock-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock

Pull memblock updates from Mike Rapoport:
 "Test suite improvements:

   - Added verification that memblock allocations zero the allocated
     memory

   - Added more test cases for memblock_add(), memblock_remove(),
     memblock_reserve() and memblock_free()

   - Added tests for memblock_*_raw() family

   - Added tests for NUMA-aware allocations in memblock_alloc_try_nid()
     and memblock_alloc_try_nid_raw()"

* tag 'memblock-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
  memblock tests: add generic NUMA tests for memblock_alloc_try_nid*
  memblock tests: add bottom-up NUMA tests for memblock_alloc_try_nid*
  memblock tests: add top-down NUMA tests for memblock_alloc_try_nid*
  memblock tests: add simulation of physical memory with multiple NUMA nodes
  memblock_tests: move variable declarations to single block
  memblock tests: remove 'cleared' from comment blocks
  memblock tests: add tests for memblock_trim_memory
  memblock tests: add tests for memblock_*bottom_up functions
  memblock tests: update alloc_nid_api to test memblock_alloc_try_nid_raw
  memblock tests: update alloc_api to test memblock_alloc_raw
  memblock tests: add additional tests for basic api and memblock_alloc
  memblock tests: add labels to verbose output for generic alloc tests
  memblock tests: update zeroed memory check for memblock_alloc_* tests
  memblock tests: update tests to check if memblock_alloc zeroed memory
  memblock tests: update reference to obsolete build option in comments
  memblock tests: add command line help option
2022-10-11 20:48:55 -07:00
Linus Torvalds f311d498be ARM:
* Fixes for single-stepping in the presence of an async
   exception as well as the preservation of PSTATE.SS
 
 * Better handling of AArch32 ID registers on AArch64-only
   systems
 
 * Fixes for the dirty-ring API, allowing it to work on
   architectures with relaxed memory ordering
 
 * Advertise the new kvmarm mailing list
 
 * Various minor cleanups and spelling fixes
 
 RISC-V:
 
 * Improved instruction encoding infrastructure for
   instructions not yet supported by binutils
 
 * Svinval support for both KVM Host and KVM Guest
 
 * Zihintpause support for KVM Guest
 
 * Zicbom support for KVM Guest
 
 * Record number of signal exits as a VCPU stat
 
 * Use generic guest entry infrastructure
 
 x86:
 
 * Misc PMU fixes and cleanups.
 
 * selftests: fixes for Hyper-V hypercall
 
 * selftests: fix nx_huge_pages_test on TDP-disabled hosts
 
 * selftests: cleanups for fix_hypercall_test
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull more kvm updates from Paolo Bonzini:
 "The main batch of ARM + RISC-V changes, and a few fixes and cleanups
  for x86 (PMU virtualization and selftests).

  ARM:

   - Fixes for single-stepping in the presence of an async exception as
     well as the preservation of PSTATE.SS

   - Better handling of AArch32 ID registers on AArch64-only systems

   - Fixes for the dirty-ring API, allowing it to work on architectures
     with relaxed memory ordering

   - Advertise the new kvmarm mailing list

   - Various minor cleanups and spelling fixes

  RISC-V:

   - Improved instruction encoding infrastructure for instructions not
     yet supported by binutils

   - Svinval support for both KVM Host and KVM Guest

   - Zihintpause support for KVM Guest

   - Zicbom support for KVM Guest

   - Record number of signal exits as a VCPU stat

   - Use generic guest entry infrastructure

  x86:

   - Misc PMU fixes and cleanups.

   - selftests: fixes for Hyper-V hypercall

   - selftests: fix nx_huge_pages_test on TDP-disabled hosts

   - selftests: cleanups for fix_hypercall_test"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (57 commits)
  riscv: select HAVE_POSIX_CPU_TIMERS_TASK_WORK
  RISC-V: KVM: Use generic guest entry infrastructure
  RISC-V: KVM: Record number of signal exits as a vCPU stat
  RISC-V: KVM: add __init annotation to riscv_kvm_init()
  RISC-V: KVM: Expose Zicbom to the guest
  RISC-V: KVM: Provide UAPI for Zicbom block size
  RISC-V: KVM: Make ISA ext mappings explicit
  RISC-V: KVM: Allow Guest use Zihintpause extension
  RISC-V: KVM: Allow Guest use Svinval extension
  RISC-V: KVM: Use Svinval for local TLB maintenance when available
  RISC-V: Probe Svinval extension form ISA string
  RISC-V: KVM: Change the SBI specification version to v1.0
  riscv: KVM: Apply insn-def to hlv encodings
  riscv: KVM: Apply insn-def to hfence encodings
  riscv: Introduce support for defining instructions
  riscv: Add X register names to gpr-nums
  KVM: arm64: Advertise new kvmarm mailing list
  kvm: vmx: keep constant definition format consistent
  kvm: mmu: fix typos in struct kvm_arch
  KVM: selftests: Fix nx_huge_pages_test on TDP-disabled hosts
  ...
2022-10-11 20:07:44 -07:00
Alexey Dobriyan 5bc73bb345 proc: test how it holds up with mapping'less process
Create process without mappings and check

	/proc/*/maps
	/proc/*/numa_maps
	/proc/*/smaps
	/proc/*/smaps_rollup

They must be empty (excluding vsyscall page) or full of zeroes.

Retroactively this test should've caught embarassing /proc/*/smaps_rollup
oops:

[17752.703567] BUG: kernel NULL pointer dereference, address: 0000000000000000
[17752.703580] #PF: supervisor read access in kernel mode
[17752.703583] #PF: error_code(0x0000) - not-present page
[17752.703587] PGD 0 P4D 0
[17752.703593] Oops: 0000 [#1] PREEMPT SMP PTI
[17752.703598] CPU: 0 PID: 60649 Comm: cat Tainted: G        W         5.19.9-100.fc35.x86_64 #1
[17752.703603] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./X99 Extreme6/3.1, BIOS P3.30 08/05/2016
[17752.703607] RIP: 0010:show_smaps_rollup+0x159/0x2e0

Note 1:
	ProtectionKey field in /proc/*/smaps is optional,
	so check most of its contents, not everything.

Note 2:
	due to the nature of this test, child process hardly can signal
	its readiness (after unmapping everything!) to parent.
	I feel like "sleep(1)" is justified.
	If you know how to do it without sleep please tell me.

Note 3:
	/proc/*/statm is not tested but can be.

Link: https://lkml.kernel.org/r/Yz3liL6Dn+n2SD8Q@localhost.localdomain
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-10-11 18:51:11 -07:00
Linus Torvalds d465bff130 perf tools changes for v6.1: 1st batch
- Add support for AMD on 'perf mem' and 'perf c2c', the kernel enablement
   patches went via tip.
 
   Example:
 
   $ sudo perf mem record -- -c 10000
   ^C[ perf record: Woken up 227 times to write data ]
   [ perf record: Captured and wrote 58.760 MB perf.data (836978 samples) ]
 
   $ sudo perf mem report -F mem,sample,snoop
   Samples: 836K of event 'ibs_op//', Event count (approx.): 8418762
   Memory access                  Samples  Snoop
   N/A                             700620  N/A
   L1 hit                          126675  N/A
   L2 hit                             424  N/A
   L3 hit                             664  HitM
   L3 hit                              10  N/A
   Local RAM hit                        2  N/A
   Remote RAM (1 hop) hit            8558  N/A
   Remote Cache (1 hop) hit             3  N/A
   Remote Cache (1 hop) hit             2  HitM
   Remote Cache (2 hops) hit           10  HitM
   Remote Cache (2 hops) hit            6  N/A
   Uncached hit                         4  N/A
   $
 
 - "perf lock" improvements:
 
   - Add -E/--entries option to limit the number of entries to display, say to ask for
     just the top 5 contended locks.
 
   - Add -q/--quiet option to suppress header and debug messages.
 
   - Add a 'perf test' kernel lock contention entry to test 'perf lock'.
 
 - "perf lock contention" improvements:
 
   - Ask BPF's bpf_get_stackid() to skip some callchain entries.
 
     The ones closer to the tooling are bpf related and not that interesting, the
     ones calling the locking function are the ones we're interested in, example
     of a full, unskipped callstack:
 
   - Allow changing the callstack depth and number of entries to skip.
 
            1     10.74 us     10.74 us     10.74 us     spinlock   __bpf_trace_contention_begin+0xb
                           0xffffffffc03b5c47  bpf_prog_bf07ae9e2cbd02c5_contention_begin+0x117
                           0xffffffffc03b5c47  bpf_prog_bf07ae9e2cbd02c5_contention_begin+0x117
                           0xffffffffbb8b8e75  bpf_trace_run2+0x35
                           0xffffffffbb7eab9b  __bpf_trace_contention_begin+0xb
                           0xffffffffbb7ebe75  queued_spin_lock_slowpath+0x1f5
                           0xffffffffbc1c26ff  _raw_spin_lock+0x1f
                           0xffffffffbb841015  tick_do_update_jiffies64+0x25
                           0xffffffffbb8409ee  tick_irq_enter+0x9e
 
   - Show full callstack in verbose mode (-v option), sometimes this is desirable
     instead of showing just one callstack entry.
 
 - Allow multiple time ranges in 'perf record --delay' to help in reducing the
   amount of data collected from hardware tracing (Intel PT, etc) when there is
   a rough idea of periods of time where events of interest take time.
 
 - Add Intel PT to record only decoder debug messages when error happens.
 
 - Improve layout of Intel PT man page.
 
 - Add new branch types: alignment, data and inst faults and arch specific ones,
   such as fiq, debug_halt, debug_exit, debug_inst and debug_data on arm64.
 
   Kernel enablement went thru the tip tree.
 
 - Fix 'perf probe' error log check in 'perf test' when no debuginfo is
   available.
 
 - Fix 'perf stat' aggregation mode logic, it should be looking at the CPU
   not at the core number.
 
 - Fix flags parsing in 'perf trace' filters.
 
 - Introduce compact encoding of CPU range encoding on perf.data, to avoid
   having a bitmap with all the CPUs.
 
 - Improvements to the 'perf stat' metrics, including adding "core_wide", and
   computing "smt" from the CPU topology.
 
 - Add support to the new PERF_FORMAT_LOST perf_event_attr.read_format, that allows
   tooling to ask for the precise number of lost samples for a given event.
 
 - Add 'addr' sort key to see just the address of sampled instructions:
 
   $ perf record -o- true | perf report -i- -s addr
   [ perf record: Woken up 1 times to write data ]
   [ perf record: Captured and wrote 0.000 MB - ]
   # Samples: 12  of event 'cycles:u'
   # Event count (approx.): 252512
   #
   # Overhead  Address
   # ........  ..................
       42.96%  0x7f96f08443d7
       29.55%  0x7f96f0859b50
       14.76%  0x7f96f0852e02
        8.30%  0x7f96f0855028
        4.43%  0xffffffff8de01087
 
   perf annotate: Toggle full address <-> offset display
 
 - Add 'f' hotkey to the 'perf annotate' TUI interface when in 'disassembler output'
   mode ('o' hotkey) to toggle showing full virtual address or just the offset.
 
 - Cache DSO build-ids when synthesizing PERF_RECORD_MMAP records for pre-existing threads,
   at the start of a 'perf record' session, speeding up that record startup phase.
 
 - Add a command line option to specify build ids in 'perf inject'.
 
 - Update JSON event files for the Intel alderlake, broadwell, broadwellde,
   broadwellx, cascadelakex, haswell, haswellx, icelake, icelakex, ivybridge,
   ivytown, jaketown, sandybridge, sapphirerapids, skylake, skylakex, and
   tigerlake processors.
 
 - Update vendor JSON event files for the ARM Neoverse V1 and E1 platforms.
 
 - Add a 'perf test' entry for 'perf mem' where a struct has false sharing and
   this gets detected in the 'perf mem' output, tested with Intel, AMD and ARM64
   systems.
 
 - Add a 'perf test' entry to test the resolution of java symbols, where an
   output like this is expected:
 
      8.18%  jshell    jitted-50116-29.so    [.] Interpreter
      0.75%  Thread-1  jitted-83602-1670.so  [.] jdk.internal.jimage.BasicImageReader.getString(int)
 
 - Add tests for the ARM64 CoreSight hardware tracing feature, with specially
   crafted pureloop, memcpy, thread loop and unroll tread that then gets
   traced and the output compared with expected output.
 
   Documentation explaining it is also included.
 
 - Add per thread Intel PT 'perf test' entry to check that PERF_RECORD_TEXT_POKE events
   are recorded per CPU, resulting in a mixture of per thread and per CPU events and mmaps,
   verify that this gets all recorded correctly.
 
 - Introduce pthread mutex wrappers to allow for building with clang's
   -Wthread-safety, i.e. using the "guarded_by" "pt_guarded_by" "lockable",
   "exclusive_lock_function", "exclusive_trylock_function",
   "exclusive_locks_required", and "no_thread_safety_analysis" compiler function
   attributes.
 
 - Fix empty version number when building outside of a git repo.
 
 - Improve feature detection display when multiple versions of a feature are present, such
   as for binutils libbfd, that has a mix of possible ways to detect according to the
   Linux distribution.
 
   Previously in some cases we had:
 
   Auto-detecting system features
   <SNIP>
   ...                                  libbfd: [ on  ]
   ...                          libbfd-liberty: [ on  ]
   ...                        libbfd-liberty-z: [ on  ]
   <SNIP>
 
   Now for this case we show just the main feature:
 
   Auto-detecting system features
   <SNIP>
   ...                                  libbfd: [ on  ]
   <SNIP>
 
 - Remove some unused structs, variables, macros, function prototypes and
   includes from various places.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-for-v6.1-1-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tools updates from Arnaldo Carvalho de Melo:

 - Add support for AMD on 'perf mem' and 'perf c2c', the kernel
   enablement patches went via tip.

   Example:

      $ sudo perf mem record -- -c 10000
      ^C[ perf record: Woken up 227 times to write data ]
      [ perf record: Captured and wrote 58.760 MB perf.data (836978 samples) ]

      $ sudo perf mem report -F mem,sample,snoop
      Samples: 836K of event 'ibs_op//', Event count (approx.): 8418762
      Memory access                  Samples  Snoop
      N/A                             700620  N/A
      L1 hit                          126675  N/A
      L2 hit                             424  N/A
      L3 hit                             664  HitM
      L3 hit                              10  N/A
      Local RAM hit                        2  N/A
      Remote RAM (1 hop) hit            8558  N/A
      Remote Cache (1 hop) hit             3  N/A
      Remote Cache (1 hop) hit             2  HitM
      Remote Cache (2 hops) hit           10  HitM
      Remote Cache (2 hops) hit            6  N/A
      Uncached hit                         4  N/A
      $

 - "perf lock" improvements:

     - Add -E/--entries option to limit the number of entries to
       display, say to ask for just the top 5 contended locks.

     - Add -q/--quiet option to suppress header and debug messages.

     - Add a 'perf test' kernel lock contention entry to test 'perf
       lock'.

 - "perf lock contention" improvements:

     - Ask BPF's bpf_get_stackid() to skip some callchain entries.

       The ones closer to the tooling are bpf related and not that
       interesting, the ones calling the locking function are the ones
       we're interested in, example of a full, unskipped callstack:

     - Allow changing the callstack depth and number of entries to skip.

           1     10.74 us     10.74 us     10.74 us     spinlock   __bpf_trace_contention_begin+0xb
                          0xffffffffc03b5c47  bpf_prog_bf07ae9e2cbd02c5_contention_begin+0x117
                          0xffffffffc03b5c47  bpf_prog_bf07ae9e2cbd02c5_contention_begin+0x117
                          0xffffffffbb8b8e75  bpf_trace_run2+0x35
                          0xffffffffbb7eab9b  __bpf_trace_contention_begin+0xb
                          0xffffffffbb7ebe75  queued_spin_lock_slowpath+0x1f5
                          0xffffffffbc1c26ff  _raw_spin_lock+0x1f
                          0xffffffffbb841015  tick_do_update_jiffies64+0x25
                          0xffffffffbb8409ee  tick_irq_enter+0x9e

     - Show full callstack in verbose mode (-v option), sometimes this
       is desirable instead of showing just one callstack entry.

 - Allow multiple time ranges in 'perf record --delay' to help in
   reducing the amount of data collected from hardware tracing (Intel
   PT, etc) when there is a rough idea of periods of time where events
   of interest take time.

 - Add Intel PT to record only decoder debug messages when error
   happens.

 - Improve layout of Intel PT man page.

 - Add new branch types: alignment, data and inst faults and arch
   specific ones, such as fiq, debug_halt, debug_exit, debug_inst and
   debug_data on arm64.

   Kernel enablement went thru the tip tree.

 - Fix 'perf probe' error log check in 'perf test' when no debuginfo is
   available.

 - Fix 'perf stat' aggregation mode logic, it should be looking at the
   CPU not at the core number.

 - Fix flags parsing in 'perf trace' filters.

 - Introduce compact encoding of CPU range encoding on perf.data, to
   avoid having a bitmap with all the CPUs.

 - Improvements to the 'perf stat' metrics, including adding
   "core_wide", and computing "smt" from the CPU topology.

 - Add support to the new PERF_FORMAT_LOST perf_event_attr.read_format,
   that allows tooling to ask for the precise number of lost samples for
   a given event.

 - Add 'addr' sort key to see just the address of sampled instructions:

      $ perf record -o- true | perf report -i- -s addr
      [ perf record: Woken up 1 times to write data ]
      [ perf record: Captured and wrote 0.000 MB - ]
      # Samples: 12  of event 'cycles:u'
      # Event count (approx.): 252512
      #
      # Overhead  Address
      # ........  ..................
          42.96%  0x7f96f08443d7
          29.55%  0x7f96f0859b50
          14.76%  0x7f96f0852e02
           8.30%  0x7f96f0855028
           4.43%  0xffffffff8de01087

      perf annotate: Toggle full address <-> offset display

 - Add 'f' hotkey to the 'perf annotate' TUI interface when in
   'disassembler output' mode ('o' hotkey) to toggle showing full
   virtual address or just the offset.

 - Cache DSO build-ids when synthesizing PERF_RECORD_MMAP records for
   pre-existing threads, at the start of a 'perf record' session,
   speeding up that record startup phase.

 - Add a command line option to specify build ids in 'perf inject'.

 - Update JSON event files for the Intel alderlake, broadwell,
   broadwellde, broadwellx, cascadelakex, haswell, haswellx, icelake,
   icelakex, ivybridge, ivytown, jaketown, sandybridge, sapphirerapids,
   skylake, skylakex, and tigerlake processors.

 - Update vendor JSON event files for the ARM Neoverse V1 and E1
   platforms.

 - Add a 'perf test' entry for 'perf mem' where a struct has false
   sharing and this gets detected in the 'perf mem' output, tested with
   Intel, AMD and ARM64 systems.

 - Add a 'perf test' entry to test the resolution of java symbols, where
   an output like this is expected:

       8.18%  jshell    jitted-50116-29.so    [.] Interpreter
       0.75%  Thread-1  jitted-83602-1670.so  [.] jdk.internal.jimage.BasicImageReader.getString(int)

 - Add tests for the ARM64 CoreSight hardware tracing feature, with
   specially crafted pureloop, memcpy, thread loop and unroll tread that
   then gets traced and the output compared with expected output.

   Documentation explaining it is also included.

 - Add per thread Intel PT 'perf test' entry to check that
   PERF_RECORD_TEXT_POKE events are recorded per CPU, resulting in a
   mixture of per thread and per CPU events and mmaps, verify that this
   gets all recorded correctly.

 - Introduce pthread mutex wrappers to allow for building with clang's
   -Wthread-safety, i.e. using the "guarded_by" "pt_guarded_by"
   "lockable", "exclusive_lock_function", "exclusive_trylock_function",
   "exclusive_locks_required", and "no_thread_safety_analysis" compiler
   function attributes.

 - Fix empty version number when building outside of a git repo.

 - Improve feature detection display when multiple versions of a feature
   are present, such as for binutils libbfd, that has a mix of possible
   ways to detect according to the Linux distribution.

   Previously in some cases we had:

      Auto-detecting system features
      <SNIP>
      ...                                  libbfd: [ on  ]
      ...                          libbfd-liberty: [ on  ]
      ...                        libbfd-liberty-z: [ on  ]
      <SNIP>

   Now for this case we show just the main feature:

      Auto-detecting system features
      <SNIP>
      ...                                  libbfd: [ on  ]
      <SNIP>

 - Remove some unused structs, variables, macros, function prototypes
   and includes from various places.

* tag 'perf-tools-for-v6.1-1-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (169 commits)
  perf script: Add missing fields in usage hint
  perf mem: Print "LFB/MAB" for PERF_MEM_LVLNUM_LFB
  perf mem/c2c: Avoid printing empty lines for unsupported events
  perf mem/c2c: Add load store event mappings for AMD
  perf mem/c2c: Set PERF_SAMPLE_WEIGHT for LOAD_STORE events
  perf mem: Add support for printing PERF_MEM_LVLNUM_{CXL|IO}
  perf amd ibs: Sync arch/x86/include/asm/amd-ibs.h header with the kernel
  tools headers UAPI: Sync include/uapi/linux/perf_event.h header with the kernel
  perf stat: Fix cpu check to use id.cpu.cpu in aggr_printout()
  perf test coresight: Add relevant documentation about ARM64 CoreSight testing
  perf test: Add git ignore for tmp and output files of ARM CoreSight tests
  perf test coresight: Add unroll thread test shell script
  perf test coresight: Add unroll thread test tool
  perf test coresight: Add thread loop test shell scripts
  perf test coresight: Add thread loop test tool
  perf test coresight: Add memcpy thread test shell script
  perf test coresight: Add memcpy thread test tool
  perf test: Add git ignore for perf data generated by the ARM CoreSight tests
  perf test: Add arm64 asm pureloop test shell script
  perf test: Add asm pureloop test tool
  ...
2022-10-11 15:02:25 -07:00
Linus Torvalds 27bc50fc90 - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in
linux-next for a couple of months without, to my knowledge, any negative
   reports (or any positive ones, come to that).
 
 - Also the Maple Tree from Liam R.  Howlett.  An overlapping range-based
   tree for vmas.  It it apparently slight more efficient in its own right,
   but is mainly targeted at enabling work to reduce mmap_lock contention.
 
   Liam has identified a number of other tree users in the kernel which
   could be beneficially onverted to mapletrees.
 
   Yu Zhao has identified a hard-to-hit but "easy to fix" lockdep splat
   (https://lkml.kernel.org/r/CAOUHufZabH85CeUN-MEMgL8gJGzJEWUrkiM58JkTbBhh-jew0Q@mail.gmail.com).
   This has yet to be addressed due to Liam's unfortunately timed
   vacation.  He is now back and we'll get this fixed up.
 
 - Dmitry Vyukov introduces KMSAN: the Kernel Memory Sanitizer.  It uses
   clang-generated instrumentation to detect used-unintialized bugs down to
   the single bit level.
 
   KMSAN keeps finding bugs.  New ones, as well as the legacy ones.
 
 - Yang Shi adds a userspace mechanism (madvise) to induce a collapse of
   memory into THPs.
 
 - Zach O'Keefe has expanded Yang Shi's madvise(MADV_COLLAPSE) to support
   file/shmem-backed pages.
 
 - userfaultfd updates from Axel Rasmussen
 
 - zsmalloc cleanups from Alexey Romanov
 
 - cleanups from Miaohe Lin: vmscan, hugetlb_cgroup, hugetlb and memory-failure
 
 - Huang Ying adds enhancements to NUMA balancing memory tiering mode's
   page promotion, with a new way of detecting hot pages.
 
 - memcg updates from Shakeel Butt: charging optimizations and reduced
   memory consumption.
 
 - memcg cleanups from Kairui Song.
 
 - memcg fixes and cleanups from Johannes Weiner.
 
 - Vishal Moola provides more folio conversions
 
 - Zhang Yi removed ll_rw_block() :(
 
 - migration enhancements from Peter Xu
 
 - migration error-path bugfixes from Huang Ying
 
 - Aneesh Kumar added ability for a device driver to alter the memory
   tiering promotion paths.  For optimizations by PMEM drivers, DRM
   drivers, etc.
 
 - vma merging improvements from Jakub Matěn.
 
 - NUMA hinting cleanups from David Hildenbrand.
 
 - xu xin added aditional userspace visibility into KSM merging activity.
 
 - THP & KSM code consolidation from Qi Zheng.
 
 - more folio work from Matthew Wilcox.
 
 - KASAN updates from Andrey Konovalov.
 
 - DAMON cleanups from Kaixu Xia.
 
 - DAMON work from SeongJae Park: fixes, cleanups.
 
 - hugetlb sysfs cleanups from Muchun Song.
 
 - Mike Kravetz fixes locking issues in hugetlbfs and in hugetlb core.
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Merge tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

 - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in
   linux-next for a couple of months without, to my knowledge, any
   negative reports (or any positive ones, come to that).

 - Also the Maple Tree from Liam Howlett. An overlapping range-based
   tree for vmas. It it apparently slightly more efficient in its own
   right, but is mainly targeted at enabling work to reduce mmap_lock
   contention.

   Liam has identified a number of other tree users in the kernel which
   could be beneficially onverted to mapletrees.

   Yu Zhao has identified a hard-to-hit but "easy to fix" lockdep splat
   at [1]. This has yet to be addressed due to Liam's unfortunately
   timed vacation. He is now back and we'll get this fixed up.

 - Dmitry Vyukov introduces KMSAN: the Kernel Memory Sanitizer. It uses
   clang-generated instrumentation to detect used-unintialized bugs down
   to the single bit level.

   KMSAN keeps finding bugs. New ones, as well as the legacy ones.

 - Yang Shi adds a userspace mechanism (madvise) to induce a collapse of
   memory into THPs.

 - Zach O'Keefe has expanded Yang Shi's madvise(MADV_COLLAPSE) to
   support file/shmem-backed pages.

 - userfaultfd updates from Axel Rasmussen

 - zsmalloc cleanups from Alexey Romanov

 - cleanups from Miaohe Lin: vmscan, hugetlb_cgroup, hugetlb and
   memory-failure

 - Huang Ying adds enhancements to NUMA balancing memory tiering mode's
   page promotion, with a new way of detecting hot pages.

 - memcg updates from Shakeel Butt: charging optimizations and reduced
   memory consumption.

 - memcg cleanups from Kairui Song.

 - memcg fixes and cleanups from Johannes Weiner.

 - Vishal Moola provides more folio conversions

 - Zhang Yi removed ll_rw_block() :(

 - migration enhancements from Peter Xu

 - migration error-path bugfixes from Huang Ying

 - Aneesh Kumar added ability for a device driver to alter the memory
   tiering promotion paths. For optimizations by PMEM drivers, DRM
   drivers, etc.

 - vma merging improvements from Jakub Matěn.

 - NUMA hinting cleanups from David Hildenbrand.

 - xu xin added aditional userspace visibility into KSM merging
   activity.

 - THP & KSM code consolidation from Qi Zheng.

 - more folio work from Matthew Wilcox.

 - KASAN updates from Andrey Konovalov.

 - DAMON cleanups from Kaixu Xia.

 - DAMON work from SeongJae Park: fixes, cleanups.

 - hugetlb sysfs cleanups from Muchun Song.

 - Mike Kravetz fixes locking issues in hugetlbfs and in hugetlb core.

Link: https://lkml.kernel.org/r/CAOUHufZabH85CeUN-MEMgL8gJGzJEWUrkiM58JkTbBhh-jew0Q@mail.gmail.com [1]

* tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (555 commits)
  hugetlb: allocate vma lock for all sharable vmas
  hugetlb: take hugetlb vma_lock when clearing vma_lock->vma pointer
  hugetlb: fix vma lock handling during split vma and range unmapping
  mglru: mm/vmscan.c: fix imprecise comments
  mm/mglru: don't sync disk for each aging cycle
  mm: memcontrol: drop dead CONFIG_MEMCG_SWAP config symbol
  mm: memcontrol: use do_memsw_account() in a few more places
  mm: memcontrol: deprecate swapaccounting=0 mode
  mm: memcontrol: don't allocate cgroup swap arrays when memcg is disabled
  mm/secretmem: remove reduntant return value
  mm/hugetlb: add available_huge_pages() func
  mm: remove unused inline functions from include/linux/mm_inline.h
  selftests/vm: add selftest for MADV_COLLAPSE of uffd-minor memory
  selftests/vm: add file/shmem MADV_COLLAPSE selftest for cleared pmd
  selftests/vm: add thp collapse shmem testing
  selftests/vm: add thp collapse file and tmpfs testing
  selftests/vm: modularize thp collapse memory operations
  selftests/vm: dedup THP helpers
  mm/khugepaged: add tracepoint to hpage_collapse_scan_file()
  mm/madvise: add file and shmem support to MADV_COLLAPSE
  ...
2022-10-10 17:53:04 -07:00
Roberto Sassu a9c7c18b57 selftests/bpf: Add tests for _opts variants of bpf_*_get_fd_by_id()
Introduce the data_input map, write-protected with a small eBPF program
implementing the lsm/bpf_map hook.

Then, ensure that bpf_map_get_fd_by_id() and bpf_map_get_fd_by_id_opts()
with NULL opts don't succeed due to requesting read-write access to the
write-protected map. Also, ensure that bpf_map_get_fd_by_id_opts() with
open_flags in opts set to BPF_F_RDONLY instead succeeds.

After obtaining a read-only fd, ensure that only map lookup succeeds and
not update. Ensure that update works only with the read-write fd obtained
at program loading time, when the write protection was not yet enabled.

Finally, ensure that the other _opts variants of bpf_*_get_fd_by_id() don't
work if the BPF_F_RDONLY flag is set in opts (due to the kernel not
handling the open_flags member of bpf_attr).

Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221006110736.84253-7-roberto.sassu@huaweicloud.com
2022-10-10 16:49:43 -07:00
Roberto Sassu 97c8f9dd5d libbpf: Introduce bpf_link_get_fd_by_id_opts()
Introduce bpf_link_get_fd_by_id_opts(), for symmetry with
bpf_map_get_fd_by_id_opts(), to let the caller pass the newly introduced
data structure bpf_get_fd_by_id_opts. Keep the existing
bpf_link_get_fd_by_id(), and call bpf_link_get_fd_by_id_opts() with NULL as
opts argument, to prevent setting open_flags.

Currently, the kernel does not support non-zero open_flags for
bpf_link_get_fd_by_id_opts(), and a call with them will result in an error
returned by the bpf() system call. The caller should always pass zero
open_flags.

Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221006110736.84253-6-roberto.sassu@huaweicloud.com
2022-10-10 16:49:20 -07:00
Roberto Sassu 2ce7cbf2ba libbpf: Introduce bpf_btf_get_fd_by_id_opts()
Introduce bpf_btf_get_fd_by_id_opts(), for symmetry with
bpf_map_get_fd_by_id_opts(), to let the caller pass the newly introduced
data structure bpf_get_fd_by_id_opts. Keep the existing
bpf_btf_get_fd_by_id(), and call bpf_btf_get_fd_by_id_opts() with NULL as
opts argument, to prevent setting open_flags.

Currently, the kernel does not support non-zero open_flags for
bpf_btf_get_fd_by_id_opts(), and a call with them will result in an error
returned by the bpf() system call. The caller should always pass zero
open_flags.

Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221006110736.84253-5-roberto.sassu@huaweicloud.com
2022-10-10 16:49:20 -07:00
Roberto Sassu 8f13f168ea libbpf: Introduce bpf_prog_get_fd_by_id_opts()
Introduce bpf_prog_get_fd_by_id_opts(), for symmetry with
bpf_map_get_fd_by_id_opts(), to let the caller pass the newly introduced
data structure bpf_get_fd_by_id_opts. Keep the existing
bpf_prog_get_fd_by_id(), and call bpf_prog_get_fd_by_id_opts() with NULL as
opts argument, to prevent setting open_flags.

Currently, the kernel does not support non-zero open_flags for
bpf_prog_get_fd_by_id_opts(), and a call with them will result in an error
returned by the bpf() system call. The caller should always pass zero
open_flags.

Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221006110736.84253-4-roberto.sassu@huaweicloud.com
2022-10-10 16:49:20 -07:00
Roberto Sassu 243e300563 libbpf: Introduce bpf_get_fd_by_id_opts and bpf_map_get_fd_by_id_opts()
Define a new data structure called bpf_get_fd_by_id_opts, with the member
open_flags, to be used by callers of the _opts variants of
bpf_*_get_fd_by_id() to specify the permissions needed for the file
descriptor to be obtained.

Also, introduce bpf_map_get_fd_by_id_opts(), to let the caller pass a
bpf_get_fd_by_id_opts structure.

Finally, keep the existing bpf_map_get_fd_by_id(), and call
bpf_map_get_fd_by_id_opts() with NULL as opts argument, to request
read-write permissions (current behavior).

Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221006110736.84253-3-roberto.sassu@huaweicloud.com
2022-10-10 16:49:20 -07:00
Roberto Sassu 7a366da2d2 libbpf: Fix LIBBPF_1.0.0 declaration in libbpf.map
Add the missing LIBBPF_0.8.0 at the end of the LIBBPF_1.0.0 declaration,
similarly to other version declarations.

Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221006110736.84253-2-roberto.sassu@huaweicloud.com
2022-10-10 16:49:20 -07:00
Linus Torvalds f848b3cda3 More power management updates for 6.1-rc1
- Add an error message to be printed when a power domain marked as
    "always on" is not actually on during initialization (Johan Hovold).
 
  - Extend macros used for defining power management callbacks to allow
    conditional exporting of noirq and late/early suspend/resume PM
    callbacks (Paul Cercueil).
 
  - Update the turbostat utility:
    * Add support for two new platforms (Zhang Rui).
    * Adjust energy unit for Sapphire Rapids (Zhang Rui).
    * Do not dump TRL if turbo is not supported (Artem Bityutskiy).
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Merge tag 'pm-6.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more power management updates from Rafael Wysocki:
 "These update the turbostat utility, extend the macros used for
  defining device power management callbacks and add a diagnostic
  message to the generic power domains code.

  Specifics:

   - Add an error message to be printed when a power domain marked as
     "always on" is not actually on during initialization (Johan
     Hovold).

   - Extend macros used for defining power management callbacks to allow
     conditional exporting of noirq and late/early suspend/resume PM
     callbacks (Paul Cercueil).

   - Update the turbostat utility:
      - Add support for two new platforms (Zhang Rui).
      - Adjust energy unit for Sapphire Rapids (Zhang Rui).
      - Do not dump TRL if turbo is not supported (Artem Bityutskiy)"

* tag 'pm-6.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  tools/power turbostat: version 2022.10.04
  tools/power turbostat: Use standard Energy Unit for SPR Dram RAPL domain
  tools/power turbostat: Do not dump TRL if turbo is not supported
  tools/power turbostat: Add support for MeteorLake platforms
  tools/power turbostat: Add support for RPL-S
  PM: Improve EXPORT_*_DEV_PM_OPS macros
  PM: domains: log failures to register always-on domains
2022-10-10 13:39:03 -07:00
Linus Torvalds ada3bfb649 tpmdd updates for Linux v6.1-rc1
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Merge tag 'tpmdd-next-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd

Pull tpm updates from Jarkko Sakkinen:
 "Just a few bug fixes this time"

* tag 'tpmdd-next-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
  selftest: tpm2: Add Client.__del__() to close /dev/tpm* handle
  security/keys: Remove inconsistent __user annotation
  char: move from strlcpy with unused retval to strscpy
2022-10-10 13:09:33 -07:00
Linus Torvalds d4013bc4d4 bitmap patches for v6.1-rc1
From Phil Auld:
 drivers/base: Fix unsigned comparison to -1 in CPUMAP_FILE_MAX_BYTES
 
 From me:
 cpumask: cleanup nr_cpu_ids vs nr_cpumask_bits mess
 
 This series cleans that mess and adds new config FORCE_NR_CPUS that
 allows to optimize cpumask subsystem if the number of CPUs is known
 at compile-time.
 
 From me:
 lib: optimize find_bit() functions
 
 Reworks find_bit() functions based on new FIND_{FIRST,NEXT}_BIT() macros.
 
 From me:
 lib/find: add find_nth_bit()
 
 Adds find_nth_bit(), which is ~70 times faster than bitcounting with
 for_each() loop:
         for_each_set_bit(bit, mask, size)
                 if (n-- == 0)
                         return bit;
 
 Also adds bitmap_weight_and() to let people replace this pattern:
 	tmp = bitmap_alloc(nbits);
 	bitmap_and(tmp, map1, map2, nbits);
 	weight = bitmap_weight(tmp, nbits);
 	bitmap_free(tmp);
 with a single bitmap_weight_and() call.
 
 From me:
 cpumask: repair cpumask_check()
 
 After switching cpumask to use nr_cpu_ids, cpumask_check() started
 generating many false-positive warnings. This series fixes it.
 
 From Valentin Schneider:
 bitmap,cpumask: Add for_each_cpu_andnot() and for_each_cpu_andnot()
 
 Extends the API with one more function and applies it in sched/core.
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Merge tag 'bitmap-6.1-rc1' of https://github.com/norov/linux

Pull bitmap updates from Yury Norov:

 - Fix unsigned comparison to -1 in CPUMAP_FILE_MAX_BYTES (Phil Auld)

 - cleanup nr_cpu_ids vs nr_cpumask_bits mess (me)

   This series cleans that mess and adds new config FORCE_NR_CPUS that
   allows to optimize cpumask subsystem if the number of CPUs is known
   at compile-time.

 - optimize find_bit() functions (me)

   Reworks find_bit() functions based on new FIND_{FIRST,NEXT}_BIT()
   macros.

 - add find_nth_bit() (me)

   Adds find_nth_bit(), which is ~70 times faster than bitcounting with
   for_each() loop:

	for_each_set_bit(bit, mask, size)
		if (n-- == 0)
			return bit;

   Also adds bitmap_weight_and() to let people replace this pattern:

	tmp = bitmap_alloc(nbits);
	bitmap_and(tmp, map1, map2, nbits);
	weight = bitmap_weight(tmp, nbits);
	bitmap_free(tmp);

   with a single bitmap_weight_and() call.

 - repair cpumask_check() (me)

   After switching cpumask to use nr_cpu_ids, cpumask_check() started
   generating many false-positive warnings. This series fixes it.

 - Add for_each_cpu_andnot() and for_each_cpu_andnot() (Valentin
   Schneider)

   Extends the API with one more function and applies it in sched/core.

* tag 'bitmap-6.1-rc1' of https://github.com/norov/linux: (28 commits)
  sched/core: Merge cpumask_andnot()+for_each_cpu() into for_each_cpu_andnot()
  lib/test_cpumask: Add for_each_cpu_and(not) tests
  cpumask: Introduce for_each_cpu_andnot()
  lib/find_bit: Introduce find_next_andnot_bit()
  cpumask: fix checking valid cpu range
  lib/bitmap: add tests for for_each() loops
  lib/find: optimize for_each() macros
  lib/bitmap: introduce for_each_set_bit_wrap() macro
  lib/find_bit: add find_next{,_and}_bit_wrap
  cpumask: switch for_each_cpu{,_not} to use for_each_bit()
  net: fix cpu_max_bits_warn() usage in netif_attrmask_next{,_and}
  cpumask: add cpumask_nth_{,and,andnot}
  lib/bitmap: remove bitmap_ord_to_pos
  lib/bitmap: add tests for find_nth_bit()
  lib: add find_nth{,_and,_andnot}_bit()
  lib/bitmap: add bitmap_weight_and()
  lib/bitmap: don't call __bitmap_weight() in kernel code
  tools: sync find_bit() implementation
  lib/find_bit: optimize find_next_bit() functions
  lib/find_bit: create find_first_zero_bit_le()
  ...
2022-10-10 12:49:34 -07:00
Linus Torvalds cdf072acb5 Tracing updates for 6.1:
Major changes:
 
  - Changed location of tracing repo from personal git repo to:
    git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
 
  - Added Masami Hiramatsu as co-maintainer
 
  - Updated MAINTAINERS file to separate out FTRACE as it is
    more than just TRACING.
 
 Minor changes:
 
  - Added Mark Rutland as FTRACE reviewer
 
  - Updated user_events to make it on its way to remove the BROKEN tag.
    The changes should now be acceptable but will run it through
    a cycle and hopefully we can remove the BROKEN tag next release.
 
  - Added filtering to eprobes
 
  - Added a delta time to the benchmark trace event
 
  - Have the histogram and filter callbacks called via a switch
    statement instead of indirect functions. This speeds it up to
    avoid retpolines.
 
  - Add a way to wake up ring buffer waiters waiting for the
    ring buffer to fill up to its watermark.
 
  - New ioctl() on the trace_pipe_raw file to wake up ring buffer
    waiters.
 
  - Wake up waiters when the ring buffer is disabled.
    A reader may block when the ring buffer is disabled,
    but if it was blocked when the ring buffer is disabled
    it should then wake up.
 
 Fixes:
 
  - Allow splice to read partially read ring buffer pages
    Fixes splice never moving forward.
 
  - Fix inverted compare that made the "shortest" ring buffer
    wait queue actually the longest.
 
  - Fix a race in the ring buffer between resetting a page when
    a writer goes to another page, and the reader.
 
  - Fix ftrace accounting bug when function hooks are added at
    boot up before the weak functions are set to "disabled".
 
  - Fix bug that freed a user allocated snapshot buffer when
    enabling a tracer.
 
  - Fix possible recursive locks in osnoise tracer
 
  - Fix recursive locking direct functions
 
  - And other minor clean ups and fixes
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Merge tag 'trace-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing updates from Steven Rostedt:
 "Major changes:

   - Changed location of tracing repo from personal git repo to:
     git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git

   - Added Masami Hiramatsu as co-maintainer

   - Updated MAINTAINERS file to separate out FTRACE as it is more than
     just TRACING.

  Minor changes:

   - Added Mark Rutland as FTRACE reviewer

   - Updated user_events to make it on its way to remove the BROKEN tag.
     The changes should now be acceptable but will run it through a
     cycle and hopefully we can remove the BROKEN tag next release.

   - Added filtering to eprobes

   - Added a delta time to the benchmark trace event

   - Have the histogram and filter callbacks called via a switch
     statement instead of indirect functions. This speeds it up to avoid
     retpolines.

   - Add a way to wake up ring buffer waiters waiting for the ring
     buffer to fill up to its watermark.

   - New ioctl() on the trace_pipe_raw file to wake up ring buffer
     waiters.

   - Wake up waiters when the ring buffer is disabled. A reader may
     block when the ring buffer is disabled, but if it was blocked when
     the ring buffer is disabled it should then wake up.

  Fixes:

   - Allow splice to read partially read ring buffer pages. This fixes
     splice never moving forward.

   - Fix inverted compare that made the "shortest" ring buffer wait
     queue actually the longest.

   - Fix a race in the ring buffer between resetting a page when a
     writer goes to another page, and the reader.

   - Fix ftrace accounting bug when function hooks are added at boot up
     before the weak functions are set to "disabled".

   - Fix bug that freed a user allocated snapshot buffer when enabling a
     tracer.

   - Fix possible recursive locks in osnoise tracer

   - Fix recursive locking direct functions

   - Other minor clean ups and fixes"

* tag 'trace-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (44 commits)
  ftrace: Create separate entry in MAINTAINERS for function hooks
  tracing: Update MAINTAINERS to reflect new tracing git repo
  tracing: Do not free snapshot if tracer is on cmdline
  ftrace: Still disable enabled records marked as disabled
  tracing/user_events: Move pages/locks into groups to prepare for namespaces
  tracing: Add Masami Hiramatsu as co-maintainer
  tracing: Remove unused variable 'dups'
  MAINTAINERS: add myself as a tracing reviewer
  ring-buffer: Fix race between reset page and reading page
  tracing/user_events: Update ABI documentation to align to bits vs bytes
  tracing/user_events: Use bits vs bytes for enabled status page data
  tracing/user_events: Use refcount instead of atomic for ref tracking
  tracing/user_events: Ensure user provided strings are safely formatted
  tracing/user_events: Use WRITE instead of READ for io vector import
  tracing/user_events: Use NULL for strstr checks
  tracing: Fix spelling mistake "preapre" -> "prepare"
  tracing: Wake up waiters when tracing is disabled
  tracing: Add ioctl() to force ring buffer waiters to wake up
  tracing: Wake up ring buffer waiters on closing of the file
  ring-buffer: Add ring_buffer_wake_waiters()
  ...
2022-10-10 12:20:55 -07:00
Linus Torvalds 4de65c5830 Livepatching changes for 6.1
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Merge tag 'livepatching-for-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching

Pull livepatching updates from Petr Mladek:

 - Fix race between fork and livepatch transition revert

 - Add sysfs entry that shows "patched" state for each object (module)
   that can be livepatched by the given livepatch

 - Some clean up

* tag 'livepatching-for-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching:
  selftests/livepatch: add sysfs test
  livepatch: add sysfs entry "patched" for each klp_object
  selftests/livepatch: normalize sysctl error message
  livepatch: Add a missing newline character in klp_module_coming()
  livepatch: fix race between fork and KLP transition
2022-10-10 11:36:19 -07:00
Linus Torvalds adf4bfc4a9 cgroup changes for v6.1-rc1.
* cpuset now support isolated cpus.partition type, which will enable dynamic
   CPU isolation.
 * pids.peak added to remember the max number of pids used.
 * Holes in cgroup namespace plugged.
 * Internal cleanups.
 
 Note that for-6.1-fixes was pulled into for-6.1 twice. Both were for
 follow-up cleanups and each merge commit has details.
 
 Also, 8a693f7766 ("cgroup: Remove CFTYPE_PRESSURE") removes the flag used
 by PSI changes in the tip tree and the merged result won't compile due to
 the missing flag. Simply removing the struct init lines specifying the flag
 is the correct resolution. linux-next already contains the correct fix:
 
  https://lkml.kernel.org/r/20220912161812.072aaa3b@canb.auug.org.au
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Merge tag 'cgroup-for-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Pull cgroup updates from Tejun Heo:

 - cpuset now support isolated cpus.partition type, which will enable
   dynamic CPU isolation

 - pids.peak added to remember the max number of pids used

 - holes in cgroup namespace plugged

 - internal cleanups

* tag 'cgroup-for-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (25 commits)
  cgroup: use strscpy() is more robust and safer
  iocost_monitor: reorder BlkgIterator
  cgroup: simplify code in cgroup_apply_control
  cgroup: Make cgroup_get_from_id() prettier
  cgroup/cpuset: remove unreachable code
  cgroup: Remove CFTYPE_PRESSURE
  cgroup: Improve cftype add/rm error handling
  kselftest/cgroup: Add cpuset v2 partition root state test
  cgroup/cpuset: Update description of cpuset.cpus.partition in cgroup-v2.rst
  cgroup/cpuset: Make partition invalid if cpumask change violates exclusivity rule
  cgroup/cpuset: Relocate a code block in validate_change()
  cgroup/cpuset: Show invalid partition reason string
  cgroup/cpuset: Add a new isolated cpus.partition type
  cgroup/cpuset: Relax constraints to partition & cpus changes
  cgroup/cpuset: Allow no-task partition to have empty cpuset.cpus.effective
  cgroup/cpuset: Miscellaneous cleanups & add helper functions
  cgroup/cpuset: Enable update_tasks_cpumask() on top_cpuset
  cgroup: add pids.peak interface for pids controller
  cgroup: Remove data-race around cgrp_dfl_visible
  cgroup: Fix build failure when CONFIG_SHRINKER_DEBUG
  ...
2022-10-10 11:12:25 -07:00
Linus Torvalds 65f109e199 Objtool changes for v6.1:
- Remove the "ANNOTATE_NOENDBR on ENDBR" warning: it's not
    really useful and only found a non-bug false positive so far.
 
  - Properly decode LOOP/LOOPE/LOOPNE, which were missing from
    the x86 decoder. Because these instructions are rather
    ineffective, they never showed up in compiler output,
    but they are simple enough to support, so add them for
    completeness.
 
  - A bit more cross-arch preparatory work.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-core-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool updates from Ingo Molnar:

 - Remove the "ANNOTATE_NOENDBR on ENDBR" warning: it's not really
   useful and only found a non-bug false positive so far.

 - Properly decode LOOP/LOOPE/LOOPNE, which were missing from the x86
   decoder. Because these instructions are rather ineffective, they
   never showed up in compiler output, but they are simple enough to
   support, so add them for completeness.

 - A bit more cross-arch preparatory work.

* tag 'objtool-core-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool,x86: Teach decode about LOOP* instructions
  objtool: Remove "ANNOTATE_NOENDBR on ENDBR" warning
  objtool: Use arch_jump_destination() in read_intra_function_calls()
2022-10-10 09:56:19 -07:00
Linus Torvalds 3e71f0167b Locking changes for v6.1:
- Disable preemption in rwsem_write_trylock()'s attempt to
    take the rwsem, to avoid RT tasks hogging the CPU, which
    managed to preempt this function after the owner has
    been cleared but before a new owner is set. Also add
    debug checks to enforce this.
 
  - Add __lockfunc to more slow path functions and add
    __sched to semaphore functions.
 
  - Mark spinlock APIs noinline when the respective CONFIG_INLINE_SPIN_*
    toggles are disabled, to reduce LTO text size.
 
  - Print more debug information when lockdep gets confused
    in look_up_lock_class().
 
  - Improve header file abuse checks.
 
  - Misc cleanups
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:

 - Disable preemption in rwsem_write_trylock()'s attempt to take the
   rwsem, to avoid RT tasks hogging the CPU, which managed to preempt
   this function after the owner has been cleared but before a new owner
   is set. Also add debug checks to enforce this.

 - Add __lockfunc to more slow path functions and add __sched to
   semaphore functions.

 - Mark spinlock APIs noinline when the respective CONFIG_INLINE_SPIN_*
   toggles are disabled, to reduce LTO text size.

 - Print more debug information when lockdep gets confused in
   look_up_lock_class().

 - Improve header file abuse checks.

 - Misc cleanups

* tag 'locking-core-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/lockdep: Print more debug information - report name and key when look_up_lock_class() got confused
  locking: Add __sched to semaphore functions
  locking/rwsem: Disable preemption while trying for rwsem lock
  locking: Detect includes rwlock.h outside of spinlock.h
  locking: Add __lockfunc to slow path functions
  locking/spinlocks: Mark spinlocks noinline when inline spinlocks are disabled
  selftests: futex: Fix 'the the' typo in comment
2022-10-10 09:44:12 -07:00
Zenghui Yu 8a6ffcbe26 KVM: arm64: selftests: Fix multiple versions of GIC creation
Commit 98f94ce42a ("KVM: selftests: Move KVM_CREATE_DEVICE_TEST code to
separate helper") wrongly converted a "real" GIC device creation to
__kvm_test_create_device() and caused the test failure on my D05 (which
supports v2 emulation). Fix it.

Fixes: 98f94ce42a ("KVM: selftests: Move KVM_CREATE_DEVICE_TEST code to separate helper")
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221009033131.365-1-yuzenghui@huawei.com
2022-10-10 09:41:39 +01:00
Linus Torvalds 4899a36f91 powerpc updates for 6.1
- Remove our now never-true definitions for pgd_huge() and p4d_leaf().
 
  - Add pte_needs_flush() and huge_pmd_needs_flush() for 64-bit.
 
  - Add support for syscall wrappers.
 
  - Add support for KFENCE on 64-bit.
 
  - Update 64-bit HV KVM to use the new guest state entry/exit accounting API.
 
  - Support execute-only memory when using the Radix MMU (P9 or later).
 
  - Implement CONFIG_PARAVIRT_TIME_ACCOUNTING for pseries guests.
 
  - Updates to our linker script to move more data into read-only sections.
 
  - Allow the VDSO to be randomised on 32-bit.
 
  - Many other small features and fixes.
 
 Thanks to: Andrew Donnellan, Aneesh Kumar K.V, Arnd Bergmann, Athira Rajeev, Christophe
 Leroy, David Hildenbrand, Disha Goel, Fabiano Rosas, Gaosheng Cui, Gustavo A. R. Silva,
 Haren Myneni, Hari Bathini, Jilin Yuan, Joel Stanley, Kajol Jain, Kees Cook, Krzysztof
 Kozlowski, Laurent Dufour, Liang He, Li Huafei, Lukas Bulwahn, Madhavan Srinivasan, Nathan
 Chancellor, Nathan Lynch, Nicholas Miehlbradt, Nicholas Piggin, Pali Rohár, Rohan McLure,
 Russell Currey, Sachin Sant, Segher Boessenkool, Shrikanth Hegde, Tyrel Datwyler, Wolfram
 Sang, ye xingchen, Zheng Yongjun.
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Merge tag 'powerpc-6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - Remove our now never-true definitions for pgd_huge() and p4d_leaf().

 - Add pte_needs_flush() and huge_pmd_needs_flush() for 64-bit.

 - Add support for syscall wrappers.

 - Add support for KFENCE on 64-bit.

 - Update 64-bit HV KVM to use the new guest state entry/exit accounting
   API.

 - Support execute-only memory when using the Radix MMU (P9 or later).

 - Implement CONFIG_PARAVIRT_TIME_ACCOUNTING for pseries guests.

 - Updates to our linker script to move more data into read-only
   sections.

 - Allow the VDSO to be randomised on 32-bit.

 - Many other small features and fixes.

Thanks to Andrew Donnellan, Aneesh Kumar K.V, Arnd Bergmann, Athira
Rajeev, Christophe Leroy, David Hildenbrand, Disha Goel, Fabiano Rosas,
Gaosheng Cui, Gustavo A. R. Silva, Haren Myneni, Hari Bathini, Jilin
Yuan, Joel Stanley, Kajol Jain, Kees Cook, Krzysztof Kozlowski, Laurent
Dufour, Liang He, Li Huafei, Lukas Bulwahn, Madhavan Srinivasan, Nathan
Chancellor, Nathan Lynch, Nicholas Miehlbradt, Nicholas Piggin, Pali
Rohár, Rohan McLure, Russell Currey, Sachin Sant, Segher Boessenkool,
Shrikanth Hegde, Tyrel Datwyler, Wolfram Sang, ye xingchen, and Zheng
Yongjun.

* tag 'powerpc-6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (214 commits)
  KVM: PPC: Book3S HV: Fix stack frame regs marker
  powerpc: Don't add __powerpc_ prefix to syscall entry points
  powerpc/64s/interrupt: Fix stack frame regs marker
  powerpc/64: Fix msr_check_and_set/clear MSR[EE] race
  powerpc/64s/interrupt: Change must-hard-mask interrupt check from BUG to WARN
  powerpc/pseries: Add firmware details to the hardware description
  powerpc/powernv: Add opal details to the hardware description
  powerpc: Add device-tree model to the hardware description
  powerpc/64: Add logical PVR to the hardware description
  powerpc: Add PVR & CPU name to hardware description
  powerpc: Add hardware description string
  powerpc/configs: Enable PPC_UV in powernv_defconfig
  powerpc/configs: Update config files for removed/renamed symbols
  powerpc/mm: Fix UBSAN warning reported on hugetlb
  powerpc/mm: Always update max/min_low_pfn in mem_topology_setup()
  powerpc/mm/book3s/hash: Rename flush_tlb_pmd_range
  powerpc: Drops STABS_DEBUG from linker scripts
  powerpc/64s: Remove lost/old comment
  powerpc/64s: Remove old STAB comment
  powerpc: remove orphan systbl_chk.sh
  ...
2022-10-09 14:05:15 -07:00
Linus Torvalds ef688f8b8c The first batch of KVM patches, mostly covering x86, which I
am sending out early due to me travelling next week.  There is a
 lone mm patch for which Andrew gave an informal ack at
 https://lore.kernel.org/linux-mm/20220817102500.440c6d0a3fce296fdf91bea6@linux-foundation.org.
 
 I will send the bulk of ARM work, as well as other
 architectures, at the end of next week.
 
 ARM:
 
 * Account stage2 page table allocations in memory stats.
 
 x86:
 
 * Account EPT/NPT arm64 page table allocations in memory stats.
 
 * Tracepoint cleanups/fixes for nested VM-Enter and emulated MSR accesses.
 
 * Drop eVMCS controls filtering for KVM on Hyper-V, all known versions of
   Hyper-V now support eVMCS fields associated with features that are
   enumerated to the guest.
 
 * Use KVM's sanitized VMCS config as the basis for the values of nested VMX
   capabilities MSRs.
 
 * A myriad event/exception fixes and cleanups.  Most notably, pending
   exceptions morph into VM-Exits earlier, as soon as the exception is
   queued, instead of waiting until the next vmentry.  This fixed
   a longstanding issue where the exceptions would incorrecly become
   double-faults instead of triggering a vmexit; the common case of
   page-fault vmexits had a special workaround, but now it's fixed
   for good.
 
 * A handful of fixes for memory leaks in error paths.
 
 * Cleanups for VMREAD trampoline and VMX's VM-Exit assembly flow.
 
 * Never write to memory from non-sleepable kvm_vcpu_check_block()
 
 * Selftests refinements and cleanups.
 
 * Misc typo cleanups.
 
 Generic:
 
 * remove KVM_REQ_UNHALT
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "The first batch of KVM patches, mostly covering x86.

  ARM:

   - Account stage2 page table allocations in memory stats

  x86:

   - Account EPT/NPT arm64 page table allocations in memory stats

   - Tracepoint cleanups/fixes for nested VM-Enter and emulated MSR
     accesses

   - Drop eVMCS controls filtering for KVM on Hyper-V, all known
     versions of Hyper-V now support eVMCS fields associated with
     features that are enumerated to the guest

   - Use KVM's sanitized VMCS config as the basis for the values of
     nested VMX capabilities MSRs

   - A myriad event/exception fixes and cleanups. Most notably, pending
     exceptions morph into VM-Exits earlier, as soon as the exception is
     queued, instead of waiting until the next vmentry. This fixed a
     longstanding issue where the exceptions would incorrecly become
     double-faults instead of triggering a vmexit; the common case of
     page-fault vmexits had a special workaround, but now it's fixed for
     good

   - A handful of fixes for memory leaks in error paths

   - Cleanups for VMREAD trampoline and VMX's VM-Exit assembly flow

   - Never write to memory from non-sleepable kvm_vcpu_check_block()

   - Selftests refinements and cleanups

   - Misc typo cleanups

  Generic:

   - remove KVM_REQ_UNHALT"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (94 commits)
  KVM: remove KVM_REQ_UNHALT
  KVM: mips, x86: do not rely on KVM_REQ_UNHALT
  KVM: x86: never write to memory from kvm_vcpu_check_block()
  KVM: x86: Don't snapshot pending INIT/SIPI prior to checking nested events
  KVM: nVMX: Make event request on VMXOFF iff INIT/SIPI is pending
  KVM: nVMX: Make an event request if INIT or SIPI is pending on VM-Enter
  KVM: SVM: Make an event request if INIT or SIPI is pending when GIF is set
  KVM: x86: lapic does not have to process INIT if it is blocked
  KVM: x86: Rename kvm_apic_has_events() to make it INIT/SIPI specific
  KVM: x86: Rename and expose helper to detect if INIT/SIPI are allowed
  KVM: nVMX: Make an event request when pending an MTF nested VM-Exit
  KVM: x86: make vendor code check for all nested events
  mailmap: Update Oliver's email address
  KVM: x86: Allow force_emulation_prefix to be written without a reload
  KVM: selftests: Add an x86-only test to verify nested exception queueing
  KVM: selftests: Use uapi header to get VMX and SVM exit reasons/codes
  KVM: x86: Rename inject_pending_events() to kvm_check_and_inject_events()
  KVM: VMX: Update MTF and ICEBP comments to document KVM's subtle behavior
  KVM: x86: Treat pending TRIPLE_FAULT requests as pending exceptions
  KVM: x86: Morph pending exceptions to pending VM-Exits at queue time
  ...
2022-10-09 09:39:55 -07:00
Linus Torvalds a09476668e Char/Misc and other driver changes for 6.1-rc1
Here is the large set of char/misc and other small driver subsystem
 changes for 6.1-rc1.  Loads of different things in here:
   - IIO driver updates, additions, and changes.  Probably the largest
     part of the diffstat
   - habanalabs driver update with support for new hardware and features,
     the second largest part of the diff.
   - fpga subsystem driver updates and additions
   - mhi subsystem updates
   - Coresight driver updates
   - gnss subsystem updates
   - extcon driver updates
   - icc subsystem updates
   - fsi subsystem updates
   - nvmem subsystem and driver updates
   - misc driver updates
   - speakup driver additions for new features
   - lots of tiny driver updates and cleanups
 
 All of these have been in the linux-next tree for a while with no
 reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc and other driver updates from Greg KH:
 "Here is the large set of char/misc and other small driver subsystem
  changes for 6.1-rc1. Loads of different things in here:

   - IIO driver updates, additions, and changes. Probably the largest
     part of the diffstat

   - habanalabs driver update with support for new hardware and
     features, the second largest part of the diff.

   - fpga subsystem driver updates and additions

   - mhi subsystem updates

   - Coresight driver updates

   - gnss subsystem updates

   - extcon driver updates

   - icc subsystem updates

   - fsi subsystem updates

   - nvmem subsystem and driver updates

   - misc driver updates

   - speakup driver additions for new features

   - lots of tiny driver updates and cleanups

  All of these have been in the linux-next tree for a while with no
  reported issues"

* tag 'char-misc-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (411 commits)
  w1: Split memcpy() of struct cn_msg flexible array
  spmi: pmic-arb: increase SPMI transaction timeout delay
  spmi: pmic-arb: block access for invalid PMIC arbiter v5 SPMI writes
  spmi: pmic-arb: correct duplicate APID to PPID mapping logic
  spmi: pmic-arb: add support to dispatch interrupt based on IRQ status
  spmi: pmic-arb: check apid against limits before calling irq handler
  spmi: pmic-arb: do not ack and clear peripheral interrupts in cleanup_irq
  spmi: pmic-arb: handle spurious interrupt
  spmi: pmic-arb: add a print in cleanup_irq
  drivers: spmi: Directly use ida_alloc()/free()
  MAINTAINERS: add TI ECAP driver info
  counter: ti-ecap-capture: capture driver support for ECAP
  Documentation: ABI: sysfs-bus-counter: add frequency & num_overflows items
  dt-bindings: counter: add ti,am62-ecap-capture.yaml
  counter: Introduce the COUNTER_COMP_ARRAY component type
  counter: Consolidate Counter extension sysfs attribute creation
  counter: Introduce the Count capture component
  counter: 104-quad-8: Add Signal polarity component
  counter: Introduce the Signal polarity component
  counter: interrupt-cnt: Implement watch_validate callback
  ...
2022-10-08 08:56:37 -07:00
Zhao Gongyi 95e5a911f9 selftests/memory-hotplug: Adjust log info for maintainability
Redirect misleading error message to /dev/null for
offline_memory_expect_success(), And, add an output
for online->offline test.

Signed-off-by: Zhao Gongyi <zhaogongyi@huawei.com>
Acked-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-10-07 10:32:10 -06:00
Zhao Gongyi 3e77a49aa7 selftests/memory-hotplug: Restore memory before exit
Some momory will be left in offline state when calling
offline_memory_expect_fail() failed. Restore it before exit.

Signed-off-by: Zhao Gongyi <zhaogongyi@huawei.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-10-07 10:32:04 -06:00
Zhao Gongyi 13023c33c9 selftests/memory-hotplug: Add checking after online or offline
Add checking for online_memory_expect_success()/
offline_memory_expect_success()/offline_memory_expect_fail(), or
the test would exit 0 although the functions return 1.

Signed-off-by: Zhao Gongyi <zhaogongyi@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-10-07 10:31:58 -06:00
Randy Dunlap cadf306460 selftests/ftrace: func_event_triggers: fix typo in user message
Correct typo of "it's" to "it".

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: linux-kselftest@vger.kernel.org
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-10-07 10:28:37 -06:00
David Gow 3c4fc7bf4c kunit: tool: Don't download risc-v opensbi firmware with wget
When running a RISC-V test kernel under QEMU, we need an OpenSBI BIOS
file. In the original QEMU support patchset, kunit_tool would optionally
download this file from GitHub if it didn't exist, using wget.

These days, it can usually be found in the distro's qemu-system-riscv
package, and is located in /usr/share/qemu on all the distros I tried
(Debian, Arch, OpenSUSE). Use this file, and thereby don't do any
downloading in kunit_tool.

In addition, we used to shell out to whatever 'wget' was in the path,
which could have potentially been used to trick the developer into
running another binary. By not using wget at all, we nicely sidestep
this issue.

Cc: Xu Panda <xu.panda@zte.com.cn>
Fixes: 87c9c16317 ("kunit: tool: add support for QEMU")
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: David Gow <davidgow@google.com>
Tested-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-10-07 10:16:28 -06:00
Linus Torvalds 0a78a376ef for-6.1/io_uring-2022-10-03
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Merge tag 'for-6.1/io_uring-2022-10-03' of git://git.kernel.dk/linux

Pull io_uring updates from Jens Axboe:

 - Add supported for more directly managed task_work running.

   This is beneficial for real world applications that end up issuing
   lots of system calls as part of handling work. Normal task_work will
   always execute as we transition in and out of the kernel, even for
   "unrelated" system calls. It's more efficient to defer the handling
   of io_uring's deferred work until the application wants it to be run,
   generally in batches.

   As part of ongoing work to write an io_uring network backend for
   Thrift, this has been shown to greatly improve performance. (Dylan)

 - Add IOPOLL support for passthrough (Kanchan)

 - Improvements and fixes to the send zero-copy support (Pavel)

 - Partial IO handling fixes (Pavel)

 - CQE ordering fixes around CQ ring overflow (Pavel)

 - Support sendto() for non-zc as well (Pavel)

 - Support sendmsg for zerocopy (Pavel)

 - Networking iov_iter fix (Stefan)

 - Misc fixes and cleanups (Pavel, me)

* tag 'for-6.1/io_uring-2022-10-03' of git://git.kernel.dk/linux: (56 commits)
  io_uring/net: fix notif cqe reordering
  io_uring/net: don't update msg_name if not provided
  io_uring: don't gate task_work run on TIF_NOTIFY_SIGNAL
  io_uring/rw: defer fsnotify calls to task context
  io_uring/net: fix fast_iov assignment in io_setup_async_msg()
  io_uring/net: fix non-zc send with address
  io_uring/net: don't skip notifs for failed requests
  io_uring/rw: don't lose short results on io_setup_async_rw()
  io_uring/rw: fix unexpected link breakage
  io_uring/net: fix cleanup double free free_iov init
  io_uring: fix CQE reordering
  io_uring/net: fix UAF in io_sendrecv_fail()
  selftest/net: adjust io_uring sendzc notif handling
  io_uring: ensure local task_work marks task as running
  io_uring/net: zerocopy sendmsg
  io_uring/net: combine fail handlers
  io_uring/net: rename io_sendzc()
  io_uring/net: support non-zerocopy sendto
  io_uring/net: refactor io_setup_async_addr
  io_uring/net: don't lose partial send_zc on fail
  ...
2022-10-07 08:52:43 -07:00
David Ahern 61b91eb33a ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference
Gwangun Jung reported a slab-out-of-bounds access in fib_nh_match:
    fib_nh_match+0xf98/0x1130 linux-6.0-rc7/net/ipv4/fib_semantics.c:961
    fib_table_delete+0x5f3/0xa40 linux-6.0-rc7/net/ipv4/fib_trie.c:1753
    inet_rtm_delroute+0x2b3/0x380 linux-6.0-rc7/net/ipv4/fib_frontend.c:874

Separate nexthop objects are mutually exclusive with the legacy
multipath spec. Fix fib_nh_match to return if the config for the
to be deleted route contains a multipath spec while the fib_info
is using a nexthop object.

Fixes: 493ced1ac4 ("ipv4: Allow routes to use nexthop objects")
Fixes: 6bf92d70e6 ("net: ipv4: fix route with nexthop object delete warning")
Reported-by: Gwangun Jung <exsociety@gmail.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-10-07 08:47:08 +01:00
Linus Torvalds ffb39098bf linux-kselftest-kunit-6.1-rc1
This KUnit update for Linux 6.1-rc1 consists of several documentation
 fixes, UML related cleanups, and a feature to enable/disable KUnit
 tests. This update includes the following change to
 
 - rename all_test_uml.config, use it for --alltests
 
 Note: if anyone was using all_tests_uml.config, this change breaks them.
 This change simplifies the usage and eliminates the need to type:
 --kunitconfig=tools/testing/kunit/configs/all_tests_uml.config.
 
 A simple workaround to create a symlink to the new name can solve the
 problem for anyone using all_tests_uml.config.
 
 all_tests_uml.config should work across ~all architectures.
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Merge tag 'linux-kselftest-kunit-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull KUnit updates from Shuah Khan:
 "Several documentation fixes, UML related cleanups, and a feature to
  enable/disable KUnit tests

  This includes the change to rename all_test_uml.config, and use it for
  '--alltests'. Note: if anyone was using all_tests_uml.config, this
  change breaks them.

  This change simplifies the usage and eliminates the need to type:

     --kunitconfig=tools/testing/kunit/configs/all_tests_uml.config

  A simple workaround to create a symlink to the new name can solve the
  problem for anyone using all_tests_uml.config.

  all_tests_uml.config should work across ~all architectures"

* tag 'linux-kselftest-kunit-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  Documentation: Kunit: Use full path to .kunitconfig
  kunit: tool: rename all_test_uml.config, use it for --alltests
  kunit: tool: remove UML specific options from all_tests_uml.config
  lib: stackinit: update reference to kunit-tool
  lib: overflow: update reference to kunit-tool
  Documentation: KUnit: update links in the index page
  Documentation: KUnit: add intro to the getting-started page
  Documentation: KUnit: Reword start guide for selecting tests
  Documentation: KUnit: add note about mrproper in start.rst
  Documentation: KUnit: avoid repeating "kunit.py run" in start.rst
  Documentation: KUnit: remove duplicated docs for kunit_tool
  Documentation: Kunit: Add ref for other kinds of tests
  Documentation: KUnit: Fix non-uml anchor
  Documentation: Kunit: Fix inconsistent titles
  Documentation: kunit: fix trivial typo
  kunit: no longer call module_info(test, "Y") for kunit modules
  kunit: add kunit.enable to enable/disable KUnit test
  kunit: tool: make --raw_output=kunit (aka --raw_output) preserve leading spaces
2022-10-06 12:57:55 -07:00
Linus Torvalds dd42d9c3f4 linux-kselftest-next-6.1-rc1
This Kselftest update for Linux 6.1-rc1 consists of fixes and new tests.
 
 - Adds a amd-pstate-ut test module, this module is used by kselftest
   to unit test amd-pstate functionality
 - Fixes and cleanups to to cpu-hotplug to delete the fault injection
   test code
 - Improvements to vm test to use top_srcdir for builds
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Merge tag 'linux-kselftest-next-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull Kselftest updates from Shuah Khan:
 "Fixes and new tests:

   - Add an amd-pstate-ut test module, used by kselftest to unit test
     amd-pstate functionality

   - Fixes and cleanups to to cpu-hotplug to delete the fault injection
     test code

   - Improvements to vm test to use top_srcdir for builds"

* tag 'linux-kselftest-next-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  docs:kselftest: fix kselftest_module.h path of example module
  cpufreq: amd-pstate: Add explanation for X86_AMD_PSTATE_UT
  selftests/cpu-hotplug: Add log info when test success
  selftests/cpu-hotplug: Reserve one cpu online at least
  selftests/cpu-hotplug: Delete fault injection related code
  selftests/cpu-hotplug: Use return instead of exit
  selftests/cpu-hotplug: Correct log info
  cpufreq: amd-pstate: modify type in argument 2 for filp_open
  Documentation: amd-pstate: Add unit test introduction
  selftests: amd-pstate: Add test trigger for amd-pstate driver
  cpufreq: amd-pstate: Add test module for amd-pstate driver
  cpufreq: amd-pstate: Expose struct amd_cpudata
  selftests/vm: use top_srcdir instead of recomputing relative paths
2022-10-06 12:53:15 -07:00
Ravi Bangoria d793107005 perf script: Add missing fields in usage hint
A few fields are missing in the usage message printed when an unknown
field option is passed. Add them to the list.

Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ali Saidi <alisaidi@amazon.com>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Link: https://lore.kernel.org/r/20221006153946.7816-9-ravi.bangoria@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 16:32:20 -03:00
Ravi Bangoria c72de11605 perf mem: Print "LFB/MAB" for PERF_MEM_LVLNUM_LFB
A hw component to track outstanding L1 Data Cache misses is called LFB
(Line Fill Buffer) on Intel and Arm. However similar component exists on
other arch with different names, for ex, it's called MAB (Miss Address
Buffer) on AMD. Use 'LFB/MAB' instead of just 'LFB'.

Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ali Saidi <alisaidi@amazon.com>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Joe Mario <jmario@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Link: https://lore.kernel.org/r/20221006153946.7816-8-ravi.bangoria@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 16:32:05 -03:00
Ravi Bangoria 2c5f652c44 perf mem/c2c: Avoid printing empty lines for unsupported events
The 'perf mem' and 'perf c2c' tools can be used with 3 different events:
load, store and combined load-store. Some architectures might support
only partial set of events in which case, perf prints an empty line for
unsupported events.  Avoid that.

Ex, AMD Zen cpus supports only combined load-store event and does not
support individual load and store event.

Before patch:
  $ perf mem record -e list

  mem-ldst     : available
  $

After patch:

  $ perf mem record -e list
  mem-ldst     : available
  $

Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ali Saidi <alisaidi@amazon.com>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Link: https://lore.kernel.org/r/20221006153946.7816-7-ravi.bangoria@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 16:31:14 -03:00
Ravi Bangoria f7b58cbdb3 perf mem/c2c: Add load store event mappings for AMD
The 'perf mem' and 'perf c2c' tools are wrappers around 'perf record'
with mem load/ store events. IBS tagged load/store sample provides most
of the information needed for these tools. Wire in the "ibs_op//" event
as mem-ldst event for AMD.

There are some limitations though: Only load/store micro-ops provide
mem/c2c information. Whereas, IBS does not have a way to choose a
particular type of micro-op to tag. This results in many non-LS
micro-ops being tagged which appear as N/A in the perf report. IBS,
being an uncore pmu from kernel point of view[1], does not support per
process monitoring. Thus, perf mem/c2c on AMD are currently supported in
per-cpu mode only.

Example:

  $ sudo perf mem record -- -c 10000
  ^C[ perf record: Woken up 227 times to write data ]
  [ perf record: Captured and wrote 58.760 MB perf.data (836978 samples) ]

  $ sudo perf mem report -F mem,sample,snoop
  Samples: 836K of event 'ibs_op//', Event count (approx.): 8418762
  Memory access                  Samples  Snoop
  N/A                             700620  N/A
  L1 hit                          126675  N/A
  L2 hit                             424  N/A
  L3 hit                             664  HitM
  L3 hit                              10  N/A
  Local RAM hit                        2  N/A
  Remote RAM (1 hop) hit            8558  N/A
  Remote Cache (1 hop) hit             3  N/A
  Remote Cache (1 hop) hit             2  HitM
  Remote Cache (2 hops) hit           10  HitM
  Remote Cache (2 hops) hit            6  N/A
  Uncached hit                         4  N/A
  $

[1]: https://lore.kernel.org/lkml/20220829113347.295-1-ravi.bangoria@amd.com

Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ali Saidi <alisaidi@amazon.com>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Link: https://lore.kernel.org/r/20221006153946.7816-6-ravi.bangoria@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 16:30:06 -03:00
Ravi Bangoria 4173cc055d perf mem/c2c: Set PERF_SAMPLE_WEIGHT for LOAD_STORE events
Currently perf sets PERF_SAMPLE_WEIGHT flag only for mem load events.
Set it for combined load-store event as well which will enable recording
of load latency by default on arch that does not support independent
mem load event.

Also document missing -W in perf-record man page.

Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ali Saidi <alisaidi@amazon.com>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Link: https://lore.kernel.org/r/20221006153946.7816-5-ravi.bangoria@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 16:29:32 -03:00
Ravi Bangoria 923396f682 perf mem: Add support for printing PERF_MEM_LVLNUM_{CXL|IO}
Add support for printing these new fields in perf mem report.

Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ali Saidi <alisaidi@amazon.com>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Link: https://lore.kernel.org/r/20221006153946.7816-4-ravi.bangoria@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 16:29:17 -03:00
Ravi Bangoria 160ae99365 perf amd ibs: Sync arch/x86/include/asm/amd-ibs.h header with the kernel
Although new details added into this header is currently used by kernel
only, tools copy needs to be in sync with kernel file to avoid
tools/perf/check-headers.sh warnings.

Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ali Saidi <alisaidi@amazon.com>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Link: https://lore.kernel.org/r/20221006153946.7816-3-ravi.bangoria@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 16:27:38 -03:00
Ravi Bangoria b7ddd38ccc tools headers UAPI: Sync include/uapi/linux/perf_event.h header with the kernel
Two new fields for mem_lvl_num has been introduced: PERF_MEM_LVLNUM_IO
and PERF_MEM_LVLNUM_CXL which are required to support perf mem/c2c on
AMD platform.

Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ali Saidi <alisaidi@amazon.com>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Link: https://lore.kernel.org/r/20221006153946.7816-2-ravi.bangoria@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 16:24:37 -03:00
Linus Torvalds 18fd049731 arm64 updates for 6.1:
- arm64 perf: DDR PMU driver for Alibaba's T-Head Yitian 710 SoC, SVE
   vector granule register added to the user regs together with SVE perf
   extensions documentation.
 
 - SVE updates: add HWCAP for SVE EBF16, update the SVE ABI documentation
   to match the actual kernel behaviour (zeroing the registers on syscall
   rather than "zeroed or preserved" previously).
 
 - More conversions to automatic system registers generation.
 
 - vDSO: use self-synchronising virtual counter access in gettimeofday()
   if the architecture supports it.
 
 - arm64 stacktrace cleanups and improvements.
 
 - arm64 atomics improvements: always inline assembly, remove LL/SC
   trampolines.
 
 - Improve the reporting of EL1 exceptions: rework BTI and FPAC exception
   handling, better EL1 undefs reporting.
 
 - Cortex-A510 erratum 2658417: remove BF16 support due to incorrect
   result.
 
 - arm64 defconfig updates: build CoreSight as a module, enable options
   necessary for docker, memory hotplug/hotremove, enable all PMUs
   provided by Arm.
 
 - arm64 ptrace() support for TPIDR2_EL0 (register provided with the SME
   extensions).
 
 - arm64 ftraces updates/fixes: fix module PLTs with mcount, remove
   unused function.
 
 - kselftest updates for arm64: simple HWCAP validation, FP stress test
   improvements, validation of ZA regs in signal handlers, include larger
   SVE and SME vector lengths in signal tests, various cleanups.
 
 - arm64 alternatives (code patching) improvements to robustness and
   consistency: replace cpucap static branches with equivalent
   alternatives, associate callback alternatives with a cpucap.
 
 - Miscellaneous updates: optimise kprobe performance of patching
   single-step slots, simplify uaccess_mask_ptr(), move MTE registers
   initialisation to C, support huge vmalloc() mappings, run softirqs on
   the per-CPU IRQ stack, compat (arm32) misalignment fixups for
   multiword accesses.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Catalin Marinas:

 - arm64 perf: DDR PMU driver for Alibaba's T-Head Yitian 710 SoC, SVE
   vector granule register added to the user regs together with SVE perf
   extensions documentation.

 - SVE updates: add HWCAP for SVE EBF16, update the SVE ABI
   documentation to match the actual kernel behaviour (zeroing the
   registers on syscall rather than "zeroed or preserved" previously).

 - More conversions to automatic system registers generation.

 - vDSO: use self-synchronising virtual counter access in gettimeofday()
   if the architecture supports it.

 - arm64 stacktrace cleanups and improvements.

 - arm64 atomics improvements: always inline assembly, remove LL/SC
   trampolines.

 - Improve the reporting of EL1 exceptions: rework BTI and FPAC
   exception handling, better EL1 undefs reporting.

 - Cortex-A510 erratum 2658417: remove BF16 support due to incorrect
   result.

 - arm64 defconfig updates: build CoreSight as a module, enable options
   necessary for docker, memory hotplug/hotremove, enable all PMUs
   provided by Arm.

 - arm64 ptrace() support for TPIDR2_EL0 (register provided with the SME
   extensions).

 - arm64 ftraces updates/fixes: fix module PLTs with mcount, remove
   unused function.

 - kselftest updates for arm64: simple HWCAP validation, FP stress test
   improvements, validation of ZA regs in signal handlers, include
   larger SVE and SME vector lengths in signal tests, various cleanups.

 - arm64 alternatives (code patching) improvements to robustness and
   consistency: replace cpucap static branches with equivalent
   alternatives, associate callback alternatives with a cpucap.

 - Miscellaneous updates: optimise kprobe performance of patching
   single-step slots, simplify uaccess_mask_ptr(), move MTE registers
   initialisation to C, support huge vmalloc() mappings, run softirqs on
   the per-CPU IRQ stack, compat (arm32) misalignment fixups for
   multiword accesses.

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (126 commits)
  arm64: alternatives: Use vdso/bits.h instead of linux/bits.h
  arm64/kprobe: Optimize the performance of patching single-step slot
  arm64: defconfig: Add Coresight as module
  kselftest/arm64: Handle EINTR while reading data from children
  kselftest/arm64: Flag fp-stress as exiting when we begin finishing up
  kselftest/arm64: Don't repeat termination handler for fp-stress
  ARM64: reloc_test: add __init/__exit annotations to module init/exit funcs
  arm64/mm: fold check for KFENCE into can_set_direct_map()
  arm64: ftrace: fix module PLTs with mcount
  arm64: module: Remove unused plt_entry_is_initialized()
  arm64: module: Make plt_equals_entry() static
  arm64: fix the build with binutils 2.27
  kselftest/arm64: Don't enable v8.5 for MTE selftest builds
  arm64: uaccess: simplify uaccess_mask_ptr()
  arm64: asm/perf_regs.h: Avoid C++-style comment in UAPI header
  kselftest/arm64: Fix typo in hwcap check
  arm64: mte: move register initialization to C
  arm64: mm: handle ARM64_KERNEL_USES_PMD_MAPS in vmemmap_populate()
  arm64: dma: Drop cache invalidation from arch_dma_prep_coherent()
  arm64/sve: Add Perf extensions documentation
  ...
2022-10-06 11:51:49 -07:00
Athira Rajeev cad3b68954 perf stat: Fix cpu check to use id.cpu.cpu in aggr_printout()
'perf stat' has options to aggregate the counts in different modes like
per socket, per core etc. The function "aggr_printout" in
util/stat-display.c which is used to print the aggregates, has a check
for cpu in case of AGGR_NONE.

This check was originally using condition : "if (id.cpu.cpu > -1)". But
this got changed after commit df936cadfb ("perf stat: Add JSON output
option"), which added option to output json format for different
aggregation modes. After this commit, the check in "aggr_printout" is
using "if (id.core > -1)".

The old code was using "id.cpu.cpu > -1" while the new code is using
"id.core > -1". But since the value printed is id.cpu.cpu, fix this
check to use cpu and not core.

Suggested-by: Ian Rogers <irogers@google.com>
Suggested-by: James Clark <james.clark@arm.com>
Signed-off-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Tested-by: Ian Rogers <irogers@google.com>
Cc: Disha Goel <disgoel@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nageswara R Sastry <rnsastry@linux.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: https://lore.kernel.org/r/20221006114225.66303-1-atrajeev@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 14:50:55 -03:00
Carsten Haitzler dc2e0fb00b perf test coresight: Add relevant documentation about ARM64 CoreSight testing
Add/improve documentation helping people get started with CoreSight and
perf as well as describe the testing and how it works.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/20220909152803.2317006-14-carsten.haitzler@foss.arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 14:50:55 -03:00
Carsten Haitzler 43c688cb32 perf test: Add git ignore for tmp and output files of ARM CoreSight tests
Ignore other output files of the new CoreSight tests so they don't
fill git status with noise we don't need or want.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Link: https://lore.kernel.org/r/20220909152803.2317006-13-carsten.haitzler@foss.arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 14:50:55 -03:00
Carsten Haitzler b65c6477f6 perf test coresight: Add unroll thread test shell script
This adds scripts to drive the unroll thread tests to compare perf
output against a minimum bar of content/quality.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Link: https://lore.kernel.org/r/20220909152803.2317006-12-carsten.haitzler@foss.arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 14:50:55 -03:00
Carsten Haitzler fc0a0ea039 perf test coresight: Add unroll thread test tool
Add test tool to be driven by further test scripts. This is a simple C
based test that is for arm64 with some inline ASM to manually unroll a
lot of code to have a very long sequence of commands.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Link: https://lore.kernel.org/r/20220909152803.2317006-11-carsten.haitzler@foss.arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 14:50:55 -03:00
Carsten Haitzler 74c62b8d61 perf test coresight: Add thread loop test shell scripts
Add a script to drive the thread loop test that gathers data so
it passes a minimum bar (in this case do we get any perf context data
for every thread).

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Link: https://lore.kernel.org/r/20220909152803.2317006-10-carsten.haitzler@foss.arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 14:50:55 -03:00
Carsten Haitzler e9664b96c6 perf test coresight: Add thread loop test tool
Add test tool to be driven by further test scripts. This is a simple C
based loop with threads test to drive from scripts that can output TIDs
for tracking/checking.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Link: https://lore.kernel.org/r/20220909152803.2317006-9-carsten.haitzler@foss.arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 14:50:55 -03:00
Carsten Haitzler b76692fea7 perf test coresight: Add memcpy thread test shell script
Add a script to drive the threaded memcpy test that gathers data so it
passes a minimum bar for amount and quality of content that we extract
from the kernel's perf support.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Link: https://lore.kernel.org/r/20220909152803.2317006-8-carsten.haitzler@foss.arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 14:50:55 -03:00
Carsten Haitzler f1288bdb6d perf test coresight: Add memcpy thread test tool
Add test tool to be driven by further test scripts. This is a simple C
based memcpy with threads test to drive from scripts.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Link: https://lore.kernel.org/r/20220909152803.2317006-7-carsten.haitzler@foss.arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 14:50:55 -03:00
Carsten Haitzler 6ea586b1e3 perf test: Add git ignore for perf data generated by the ARM CoreSight tests
Ignore perf output data files generated by perf tests for cleaner git
status.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Link: https://lore.kernel.org/r/20220909152803.2317006-6-carsten.haitzler@foss.arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 14:50:55 -03:00
Carsten Haitzler fdc25cc59c perf test: Add arm64 asm pureloop test shell script
Add a script to drive the asm pureloop test for arm64/CoreSight that
gathers data so it passes a minimum bar for amount and quality of
content that we extract from the kernel's perf support.

Committer notes:

Add the install of tests/shell/coresight/*.sh to
tools/perf/Makefile.perf as we're starting to populate that dir.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Link: https://lore.kernel.org/r/20220909152803.2317006-5-carsten.haitzler@foss.arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 14:50:49 -03:00
Carsten Haitzler 8b97519711 perf test: Add asm pureloop test tool
Add test tool to be driven by further test scripts. This tool is pure
arm64 ASM with no libc usage to ensure it is the same exact binary/code
every time so it can also be re-used for many uses. It just loops for a
given fixed number of loops.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Link: https://lore.kernel.org/r/20220909152803.2317006-4-carsten.haitzler@foss.arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 14:48:48 -03:00
Carsten Haitzler 34bec35cbb perf test: Add build infra for perf test tools for ARM CoreSight tests
This adds the initial build infrastructure (makefiles maintainers
information) for adding follow-on tests for CoreSight.

Committer notes:

Remove the installation of tests/shell/coresight/*.sh, as there are no
files there yet and thus, at this point, make install fails.

Use $(QUIET_CLEAN) to avoid having extraneous output in the 'make clean'
output.

Also use @$(MAKE) in tools/perf/tests/shell/coresight/Makefile as $(Q)
is not turning into @ when V=1 isn't used, i.e. in the default case it
is not being quiet.

The >/dev/null in the all for tools/perf/tests/shell/coresight/Makefile
is to avoid this:

  make[4]: Nothing to be done for 'all'.
  make[4]: Nothing to be done for 'all'.
  make[4]: Nothing to be done for 'all'.
    DESCEND plugins
    GEN     /tmp/build/perf/python/perf.so
  make[4]: Nothing to be done for 'all'.
    INSTALL trace_plugins

On !arm64 where nothing is done on the main target for
tools/perf/tests/shell/coresight/*/Makefile.

Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Link: http://lore.kernel.org/lkml/20220909152803.2317006-3-carsten.haitzler@foss.arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 14:47:19 -03:00
Jiri Olsa 1d2d941bc1 selftests/bpf: Add missing bpf_iter_vma_offset__destroy call
Adding missing bpf_iter_vma_offset__destroy call and using in-skeletin
link pointer so we don't need extra bpf_link__destroy call.

Fixes: b3e1331eb9 ("selftests/bpf: Test parameterized task BPF iterators.")
Cc: Kui-Feng Lee <kuifeng@fb.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20221006083106.117987-1-jolsa@kernel.org
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2022-10-06 10:11:38 -07:00
Yonghong Song 8206e4e952 selftests/bpf: Add selftest deny_namespace to s390x deny list
BPF CI reported that selftest deny_namespace failed with s390x.

  test_unpriv_userns_create_no_bpf:PASS:no-bpf unpriv new user ns 0 nsec
  test_deny_namespace:PASS:skel load 0 nsec
  libbpf: prog 'test_userns_create': failed to attach: ERROR: strerror_r(-524)=22
  libbpf: prog 'test_userns_create': failed to auto-attach: -524
  test_deny_namespace:FAIL:attach unexpected error: -524 (errno 524)
  #57/1    deny_namespace/unpriv_userns_create_no_bpf:FAIL
  #57      deny_namespace:FAIL

BPF program test_userns_create is a BPF LSM type program which is
based on trampoline and s390x does not support s390x. Let add the
test to x390x deny list to avoid this failure in BPF CI.

Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20221006053429.3549165-1-yhs@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-06 08:27:18 -07:00
Andrii Nakryiko 8a76145a2e bpf: explicitly define BPF_FUNC_xxx integer values
Historically enum bpf_func_id's BPF_FUNC_xxx enumerators relied on
implicit sequential values being assigned by compiler. This is
convenient, as new BPF helpers are always added at the very end, but it
also has its downsides, some of them being:

  - with over 200 helpers now it's very hard to know what's each helper's ID,
    which is often important to know when working with BPF assembly (e.g.,
    by dumping raw bpf assembly instructions with llvm-objdump -d
    command). it's possible to work around this by looking into vmlinux.h,
    dumping /sys/btf/kernel/vmlinux, looking at libbpf-provided
    bpf_helper_defs.h, etc. But it always feels like an unnecessary step
    and one should be able to quickly figure this out from UAPI header.

  - when backporting and cherry-picking only some BPF helpers onto older
    kernels it's important to be able to skip some enum values for helpers
    that weren't backported, but preserve absolute integer IDs to keep BPF
    helper IDs stable so that BPF programs stay portable across upstream
    and backported kernels.

While neither problem is insurmountable, they come up frequently enough
and are annoying enough to warrant improving the situation. And for the
backporting the problem can easily go unnoticed for a while, especially
if backport is done with people not very familiar with BPF subsystem overall.

Anyways, it's easy to fix this by making sure that __BPF_FUNC_MAPPER
macro provides explicit helper IDs. Unfortunately that would potentially
break existing users that use UAPI-exposed __BPF_FUNC_MAPPER and are
expected to pass macro that accepts only symbolic helper identifier
(e.g., map_lookup_elem for bpf_map_lookup_elem() helper).

As such, we need to introduce a new macro (___BPF_FUNC_MAPPER) which
would specify both identifier and integer ID, but in such a way as to
allow existing __BPF_FUNC_MAPPER be expressed in terms of new
___BPF_FUNC_MAPPER macro. And that's what this patch is doing. To avoid
duplication and allow __BPF_FUNC_MAPPER stay *exactly* the same,
___BPF_FUNC_MAPPER accepts arbitrary "context" arguments, which can be
used to pass any extra macros, arguments, and whatnot. In our case we
use this to pass original user-provided macro that expects single
argument and __BPF_FUNC_MAPPER is using it's own three-argument
__BPF_FUNC_MAPPER_APPLY intermediate macro to impedance-match new and
old "callback" macros.

Once we resolve this, we use new ___BPF_FUNC_MAPPER to define enum
bpf_func_id with explicit values. The other users of __BPF_FUNC_MAPPER
in kernel (namely in kernel/bpf/disasm.c) are kept exactly the same both
as demonstration that backwards compat works, but also to avoid
unnecessary code churn.

Note that new ___BPF_FUNC_MAPPER() doesn't forcefully insert comma
between values, as that might not be appropriate in all possible cases
where ___BPF_FUNC_MAPPER might be used by users. This doesn't reduce
usability, as it's trivial to insert that comma inside "callback" macro.

To validate all the manually specified IDs are exactly right, we used
BTF to compare before and after values:

  $ bpftool btf dump file ~/linux-build/default/vmlinux | rg bpf_func_id -A 211 > after.txt
  $ git stash # stach UAPI changes
  $ make -j90
  ... re-building kernel without UAPI changes ...
  $ bpftool btf dump file ~/linux-build/default/vmlinux | rg bpf_func_id -A 211 > before.txt
  $ diff -u before.txt after.txt
  --- before.txt  2022-10-05 10:48:18.119195916 -0700
  +++ after.txt   2022-10-05 10:46:49.446615025 -0700
  @@ -1,4 +1,4 @@
  -[14576] ENUM 'bpf_func_id' encoding=UNSIGNED size=4 vlen=211
  +[9560] ENUM 'bpf_func_id' encoding=UNSIGNED size=4 vlen=211
          'BPF_FUNC_unspec' val=0
          'BPF_FUNC_map_lookup_elem' val=1
          'BPF_FUNC_map_update_elem' val=2

As can be seen from diff above, the only thing that changed was resulting BTF
type ID of ENUM bpf_func_id, not any of the enumerators, their names or integer
values.

The only other place that needed fixing was scripts/bpf_doc.py used to generate
man pages and bpf_helper_defs.h header for libbpf and selftests. That script is
tightly-coupled to exact shape of ___BPF_FUNC_MAPPER macro definition, so had
to be trivially adapted.

Cc: Quentin Monnet <quentin@isovalent.com>
Reported-by: Andrea Terzolo <andrea.terzolo@polito.it>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/20221006042452.2089843-1-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-06 08:19:30 -07:00
Carsten Haitzler c63317ab14 perf test: Add CoreSight shell lib shared code for future tests
This adds a library of shell "code" to be shared and used by future
tests that target quality testing for Arm CoreSight support in perf
and the Linux kernel.

Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Reviewed-by: James Clark <james.clark@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Link: http://lore.kernel.org/lkml/20220909152803.2317006-2-carsten.haitzler@foss.arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 11:12:14 -03:00
Leo Yan 60abedb8aa perf test: Introduce script for data symbol testing
The test is designed with a data structure with 64-byte alignment, it
has two fields "data1" and "data2", and other fields are reserved.

Using the "perf mem" command, we can record and report memory samples
for a self-contained workload with 1 second duration.  If no samples are
obtained for the data structure "buf1", it reports failure;  and by
checking the offset in structure "buf1", if the memory samples aren't
for the "data1" and "data2" fields, it means wrong data symbol parsing
and returns failure.

Committer testing:

  [root@quaco ~]# grep -m1 "model name" /proc/cpuinfo
  model name	: Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
  [root@quaco ~]#
  [root@quaco ~]# perf test -v "data symbol"
  104: Test data symbol                                                :
  --- start ---
  test child forked, pid 192318
  Compiling test program...
  Recording workload...
  [ perf record: Woken up 2 times to write data ]
  [ perf record: Captured and wrote 0.389 MB /tmp/__perf_test.perf.data.LIuQl (5570 samples) ]
  Cleaning up files...
  test child finished with 0
  ---- end ----
  Test data symbol: Ok
  [root@quaco ~]#

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Link: https://lore.kernel.org/r/20221006101039.47870-1-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 11:12:14 -03:00
Namhyung Kim fd643afc8f perf record: Save DSO build-ID for synthesizing
When synthesizing MMAP2 with build-id, it'd read the same file repeatedly as
it has no idea if it's done already.  Maintain a dsos to check that and skip
the file access if possible.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220920222822.2171056-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 11:12:14 -03:00
Namhyung Kim fa2edc07b4 perf stat: Rename to aggr_cpu_id.thread_idx
The aggr_cpu_id has a thread value but it's actually an index to the
thread_map.  To reduce possible confusion, rename it to thread_idx.

Suggested-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20220930202110.845199-8-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Namhyung Kim 01b8957b73 perf stat: Don't compare runtime stat for shadow stats
Now it always uses the global rt_stat.  Let's get rid of the field from
the saved_value.  When the both evsels are NULL, it'd return 0 so remove
the block in the saved_value_cmp.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20220930202110.845199-7-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Namhyung Kim f407aac405 perf stat: Kill unused per-thread runtime stats
Now it's using the global rt_stat, no need to use per-thread stats.  Let
get rid of them.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20220930202110.845199-6-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Namhyung Kim 87ae87fd6c perf stat: Use thread map index for shadow stat
When AGGR_THREAD is active, it aggregates the values for each thread.
Previously it used cpu map index which is invalid for AGGR_THREAD so
it had to use separate runtime stats with index 0.

But it can just use the rt_stat with thread_map_index.  Rename the
first_shadow_map_idx() and make it return the thread index.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20220930202110.845199-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Namhyung Kim dfca2d692d perf stat: Rename saved_value->cpu_map_idx
The cpu_map_idx fields is just to differentiate values from other
entries.  It doesn't need to be strictly cpu map index.  Actually we can
pass thread map index or aggr map index.  So rename the fields first.

No functional change intended.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20220930202110.845199-4-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Namhyung Kim 429b8e8451 perf stat: Don't call perf_stat_evsel_id_init() repeatedly
evsel__reset_stat_priv() is called more than once if user gave -r option
for multiple runs.  But it doesn't need to re-initialize the id.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20220930202110.845199-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Namhyung Kim 66b76e30ee perf stat: Convert perf_stat_evsel.res_stats array
It uses only one member, no need to have it as an array.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20220930202110.845199-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Namhyung Kim 1337b9dcb0 perf tools: Remove special handling of system-wide evsel
For system-wide evsels, the thread map should be dummy - i.e. it has a
single entry of -1.  But the code guarantees such a thread map, so no
need to handle it specially.

No functional change intended.

Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221003204647.1481128-6-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Namhyung Kim 182bb594e0 perf tools: Add evlist__add_sched_switch()
Add a help to create a system-wide sched_switch event.  One merit is
that it sets the system-wide bit before adding it to evlist so that
the libperf can handle the cpu and thread maps correctly.

Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221003204647.1481128-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Namhyung Kim 60ea006f72 perf tools: Get rid of evlist__add_on_all_cpus()
The cpu and thread maps are properly handled in libperf now.  No need to
do it in the perf tools anymore.  Let's remove the logic.

Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221003204647.1481128-4-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Namhyung Kim 7e2450bb75 libperf: Propagate maps only if necessary
The current code propagate evsel's cpu map settings to evlist when it's
added to an evlist.  But the evlist->all_cpus and each evsel's cpus will
be updated in perf_evlist__set_maps() later.  No need to do it before
evlist's cpus are set actually.

In fact it discards this intermediate all_cpus maps at the beginning
of perf_evlist__set_maps().  Let's not do this.  It's only needed when
an evsel is added after the evlist cpu/thread maps are set.

Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221003204647.1481128-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Namhyung Kim 06b552ee37 libperf: Populate system-wide evsel maps
Setting proper cpu and thread maps for system wide evsels regardless of
user requested cpu in __perf_evlist__propagate_maps().  Those evsels
need to be active on all cpus always.  Do it in the libperf so that we
can guarantee it has proper maps.

Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221003204647.1481128-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Ian Rogers d7184d9487 perf vendor events: Update Intel broadwellde
Events remain at v23, and the metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Switch for core metrics from BDX to BDW.
 - Switch for Page_Walks_Utilization to BDX version.
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - Addition of all 6 levels of TMA metrics. Child metrics are placed in
   a group named after their parent allowing children of a metric to
   be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-24-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Ian Rogers a7c1aaa639 perf vendor events: Update Intel tigerlake
Events remain at v1.07, and the metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - Addition of all 6 levels of TMA metrics. Previously metrics
   involving topdown events were dropped. Child metrics are placed in
   a group named after their parent allowing children of a metric to
   be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-23-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Ian Rogers aac53e8f07 perf vendor events: Update Intel skylake
Events remain at v53, and the metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - _SMT suffix metrics are dropped as the #SMT_On and #EBS_Mode are
   correctly expanded in the single main metric.
 - Addition of all 6 levels of TMA metrics. Child metrics are placed
   in a group named after their parent allowing children of a metric
   to be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-22-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Ian Rogers e762a998e7 perf vendor events: Update silvermont cpuids
Add cpuid that was added to https://download.01.org/perfmon/mapfile.csv

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-21-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Ian Rogers 9a1b4aa4c9 perf vendor events: Update Intel sapphirerapids
Events are updated to v1.06 the core metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - Addition of all 6 levels of TMA metrics. Previously metrics
   involving topdown events were dropped. Child metrics are placed in
   a group named after their parent allowing children of a metric to
   be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.
 - Latest metrics from: https://github.com/intel/perfmon-metrics

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-20-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Ian Rogers db35c1dc0b perf vendor events: Update Intel sandybridge
Events remain at v17, and the metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - _SMT suffix metrics are dropped as the #SMT_On and #EBS_Mode are
   correctly expanded in the single main metric.
 - Addition of all 6 levels of TMA metrics. Child metrics are placed in
   a group named after their parent allowing children of a metric to
   be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-19-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Ian Rogers 3405de19ab perf vendor events: Update Intel jaketown
Events remain at v21, and the metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - _SMT suffix metrics are dropped as the #SMT_On and #EBS_Mode are
   correctly expanded in the single main metric.
 - Addition of all 6 levels of TMA metrics. Child metrics are placed in
   a group named after their parent allowing children of a metric to
   be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-18-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:53 -03:00
Ian Rogers d2aaf04076 perf vendor events: Update Intel ivytown
Events are updated to v22 the core metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - _SMT suffix metrics are dropped as the #SMT_On and #EBS_Mode are
   correctly expanded in the single main metric.
 - Addition of all 6 levels of TMA metrics. Child metrics are placed in
   a group named after their parent allowing children of a metric to
   be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-17-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Ian Rogers 3bd2d21171 perf vendor events: Update Intel ivybridge
Events remain at v22, and the metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - _SMT suffix metrics are dropped as the #SMT_On and #EBS_Mode are
   correctly expanded in the single main metric.
 - Addition of all 6 levels of TMA metrics. Child metrics are placed in
   a group named after their parent allowing children of a metric to
   be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-16-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Ian Rogers bd035250c5 perf vendor events: Update Intel icelakex
Events are updated to v1.16 the metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - Addition of all 6 levels of TMA metrics. Previously metrics
   involving topdown events were dropped. Child metrics are placed in
   a group named after their parent allowing children of a metric to
   be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.
 - Latest metrics from: https://github.com/intel/perfmon-metrics

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-15-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Ian Rogers 8fb4ddf499 perf vendor events: Update Intel icelake
Events are updated to v1.15, the metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - Addition of all 6 levels of TMA metrics. Previously metrics
   involving topdown events were dropped. Child metrics are placed in
   a group named after their parent allowing children of a metric to
   be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-14-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Ian Rogers 08ce57dd1b perf vendor events: Update Intel haswellx
Events are updated to v26, the core metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Uncore event updates by Zhengjun Xing <zhengjun.xing@linux.intel.com>.
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - _SMT suffix metrics are dropped as the #SMT_On and #EBS_Mode are
   correctly expanded in the single main metric.
 - Addition of all 6 levels of TMA metrics. Previously metrics
   involving topdown events were dropped. Child metrics are placed in
   a group named after their parent allowing children of a metric to
   be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.
 - Latest metrics from: https://github.com/intel/perfmon-metrics

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-13-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Ian Rogers dd7aae2c2d perf vendor events: Update Intel haswell
Events are updated to v32, the core metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - _SMT suffix metrics are dropped as the #SMT_On and #EBS_Mode are
   correctly expanded in the single main metric.
 - Addition of all 6 levels of TMA metrics. Child metrics are placed in
   a group named after their parent allowing children of a metric to
   be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-12-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Ian Rogers 5ed4fc264c perf vendor events: Update elkhartlake cpuids
Add cpuid that was added to https://download.01.org/perfmon/mapfile.csv

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-11-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Ian Rogers 55b201a833 perf vendor events: Update Intel cascadelakex
Events remain at v1.16, and the metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Removal of ScaleUnit from uncore events by Zhengjun Xing
   <zhengjun.xing@linux.intel.com>.
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - _SMT suffix metrics are dropped as the #SMT_On and #EBS_Mode are
   correctly expanded in the single main metric.
 - Addition of all 6 levels of TMA metrics. Child metrics are placed
   in a group named after their parent allowing children of a metric
   to be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.
 - Latest metrics from: https://github.com/intel/perfmon-metrics

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-10-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Ian Rogers 5bc4e39eec perf vendor events: Update Intel broadwellx
Events remain at v19, and the metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Uncore event updates by Zhengjun Xing <zhengjun.xing@linux.intel.com>.
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - _SMT suffix metrics are dropped as the #SMT_On and #EBS_Mode are
   correctly expanded in the single main metric.
 - Addition of all 6 levels of TMA metrics. Child metrics are placed
   in a group named after their parent allowing children of a metric
   to be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.
 - Latest metrics from: https://github.com/intel/perfmon-metrics

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-9-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Ian Rogers eb4f8d7787 perf vendor events: Update Intel broadwell
Events remain at v26, and the metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - _SMT suffix metrics are dropped as the #SMT_On and #EBS_Mode are
   correctly expanded in the single main metric.
 - Addition of all 6 levels of TMA metrics. Child metrics are placed
   in a group named after their parent allowing children of a metric
   to be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-8-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Ian Rogers a80de06698 perf vendor events: Update Intel alderlake
Events are updated to v1.15, the core metrics are based on TMA 4.4
full and the atom metrics on E-core TMA 2.2.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - Addition of all 6 levels of TMA metrics. Previously metrics
   involving topdown events were dropped. Child metrics are placed in
   a group named after their parent allowing children of a metric to
   be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.
 - Update mapfile.csv CPUIDs to match 01.org.

Tested with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-7-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Ian Rogers 313b2f384b perf vendor events: Update Intel skylakex
Events remain at v1.28, and the metrics are based on TMA 4.4 full.

Use script at:
https://github.com/intel/event-converter-for-linux-perf/blob/master/download_and_gen.py
with updates at:
https://github.com/captain5050/event-converter-for-linux-perf

Updates include:
 - Removal of ScaleUnit from uncore events by Zhengjun Xing
   <zhengjun.xing@linux.intel.com>.
 - Rename of topdown TMA metrics from Frontend_Bound to tma_frontend_bound.
 - _SMT suffix metrics are dropped as the #SMT_On and #EBS_Mode are
   correctly expanded in the single main metric.
 - Addition of all 6 levels of TMA metrics. Child metrics are placed
   in a group named after their parent allowing children of a metric
   to be easily measured using the metric name with a _group suffix.
 - ## and ##? operators are correctly expanded.
 - The locate-with column is added to the long description describing
   a sampling event.
 - Metrics are written in terms of other metrics to reduce the
   expression size and increase readability.
 - Latest metrics from: https://github.com/intel/perfmon-metrics

Tested on a skylakex manually and with 'perf test':
 10: PMU events                                                      :
 10.1: PMU event table sanity                                        : Ok
 10.2: PMU event map aliases                                         : Ok
 10.3: Parsing of PMU event table metrics                            : Ok
 10.4: Parsing of PMU event table metrics with fake PMUs             : Ok
 93: perf all metricgroups test                                      : Ok
 94: perf all metrics test                                           : Skip
 95: perf all PMU test                                               : Ok

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-6-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Ian Rogers 8cff7490fc perf metrics: Don't scale counts going into metrics
Counts are scaled prior to going into saved_value, reverse the scaling
so that metrics don't double scale values.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-5-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Ian Rogers 715b824f4a perf expr: Remove jevents case workaround
jevents.py no longer lowercases metrics and altering the case can cause
hashmap lookups to fail, so remove.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-4-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Ian Rogers 0e4079154e perf test: Adjust case of test metrics
Icelake and later architectures have slots events and SLOTS metrics
meaning case sensitivity is important. Make the test metrics case
agree with the name of the metrics.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-3-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Ian Rogers 4b65fc7bca perf expr: Allow a double if expression
Some TMA metrics have double if expressions like:

  ( CPU_CLK_UNHALTED.THREAD / 2 ) * ( 1 + CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE / CPU_CLK_UNHALTED.REF_XCLK ) ) if #core_wide < 1 else ( CPU_CLK_UNHALTED.THREAD_ANY / 2 ) if #SMT_on else CPU_CLK_UNHALTED.THREAD

This currently fails to parse as the left hand side if expression needs
to be in parentheses. By allowing the if expression to have a right hand
side that is an if expression we can parse the expression above, with
left to right evaluation order that matches languages like Python.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kshipra Bopardikar <kshipra.bopardikar@intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221004021612.325521-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Chen Zhongjin 30b842d27d perf parse-events: Remove unused macros __PERF_EVENT_FIELD()
Unused macros reported by [-Wunused-macros].

This macros were introduced as __PERF_COUNTER_FIELD and used for reading
the bit in config.

cdd6c482c9 ("perf: Do the big rename: Performance Counters ->
Performance Events") Changes it to __PERF_EVENT_FIELD but at this commit
there is already nowhere else using these macros, also no macros called
PERF_EVENT_##name##_MASK/SHIFT.

Now we are not reading type or id from config. These macros are useless
and incomplete.

So removing them for code cleaning.

Signed-off-by: Chen Zhongjin <chenzhongjin@huawei.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20220926031440.28275-5-chenzhongjin@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Will Chandler 81935f10e6 perf tools: Fix empty version number when building outside of a git repo
When perf is built in a full source tree that is not a git repository,
e.g. from a kernel source tarball, `perf version` will print empty tag
and commit strings:

  $ perf version
  perf version

Currently the tag version is only generated from the root Makefile when
building in a git repository. If PERF-VERSION-FILE has not been
generated and the source tree is not in a git repository, then
PERF-VERSION-GEN will return an empty version.

The problem can be reproduced with the following steps:

  $ wget https://git.kernel.org/torvalds/t/linux-6.0-rc7.tar.gz
  $ tar -xf linux-6.0-rc7.tar.gz && cd linux-6.0-rc7
  $ make -C tools/perf
  $ tools/perf/perf -v
  perf version

Builds from tarballs generated with `make perf-tar-src-pkg` are not
impacted by this issue as PERF-VERSION-FILE is included in the archive.

The perf RPM provided by Fedora for 5.18+ is experiencing this problem.
Package build logs[0] show that the build is attempting to fall back on
PERF-VERSION-FILE, but it is not present.

To resolve this, revert back to the previous logic of using the kernel
Makefile version if not in a git repository and PERF-VERSION-FILE does
not exist.

[0] https://kojipkgs.fedoraproject.org/packages/kernel-tools/5.19.4/200.fc36/data/logs/x86_64/build.log

Fixes: 7572733b84 ("perf tools: Fix version kernel tag")
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Will Chandler <wfc@wfchandler.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220930151157.529674-1-wfc@wfchandler.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Yuan Can 20b2194eee perf lock: Remove unused struct lock_contention_key
The struct lock_contention_key is never used, remove it.

Signed-off-by: Yuan Can <yuancan@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/linux-perf-users/20220927013931.110475-6-yuancan@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:52 -03:00
Yuan Can d28a8fd3c0 perf jit: Remove unused struct debug_line_info
The struct debug_line_info is never used, remove it.

Signed-off-by: Yuan Can <yuancan@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/linux-perf-users/20220927013931.110475-5-yuancan@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:51 -03:00
Yuan Can 18f224ee81 perf metric: Remove unused struct metric_ref_node
After commit 46bdc0bf8d ("perf metric: Simplify metric_refs
calculation"), no one use struct metric_ref_node, so remove it.

Signed-off-by: Yuan Can <yuancan@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/linux-perf-users/20220927013931.110475-4-yuancan@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:51 -03:00
Yuan Can 8d9b1734c7 perf annotate: Remove unused struct disasm_line_samples
After commit 3ab6db8d0f ("perf annotate browser: Use samples data from
struct annotation_line"), no one use struct disasm_line_samples, so
remove it.

Signed-off-by: Yuan Can <yuancan@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/linux-perf-users/20220927013931.110475-3-yuancan@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:51 -03:00
Yuan Can dae09ffca0 perf machine: Remove unused struct process_args
After commit a93f0e551a ("perf symbols: Get kernel start address by symbol
name"), no one uses struct process_args any more, so remove it.

Signed-off-by: Yuan Can <yuancan@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/linux-perf-users/20220927013931.110475-2-yuancan@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:51 -03:00
Namhyung Kim 433b31fa00 perf lock contention: Fix a build error on 32-bit
It was reported that it failed to build the BPF lock contention skeleton
on 32 bit arch due to the size of long.  The lost count is used only for
reporting errors due to lack of stackmap space through bad_hist which
type is 'int'.  Let's use int type then.

Fixes: 6d499a6b3d ("perf lock: Print the number of lost entries for BPF")
Reported-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Link: http://lore.kernel.org/lkml/20220926215638.3931222-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:51 -03:00
Shang XiaoJing c7c43e38b2 perf stat: Clean redundant if in process_evlist
Since the first if statment is covered by the following one, clean up
the first if statment.

Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220922141438.22487-5-shangxiaojing@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-10-06 08:03:51 -03:00
Andrii Nakryiko 60df8c4d32 selftests/bpf: add BPF object fixup step to veristat
Add a step to attempt to "fix up" BPF object file to make it possible to
successfully load it. E.g., set non-zero size for BPF maps that expect
max_entries set, but BPF object file itself doesn't have declarative
max_entries values specified.

Another issue was with automatic map pinning. Pinning has no effect on
BPF verification process itself but can interfere when validating
multiple related programs and object files, so veristat disabled all the
pinning explicitly.

In the future more such fix up heuristics could be added to accommodate
common patterns encountered in practice.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20221005161450.1064469-3-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-05 16:55:12 -07:00
Andrii Nakryiko 6df2eb45e3 selftests/bpf: avoid reporting +100% difference in veristat for actual 0%
In special case when both base and comparison values are 0, veristat
currently reports "+0 (+100%)" difference, which is quite confusing. Fix
it up to be "+0 (+0%)".

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20221005161450.1064469-2-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-05 16:55:11 -07:00
Andrii Nakryiko 2a72f5951a selftests/bpf: allow requesting log level 2 in test_verifier
Log level 1 on successfully verified programs are basically equivalent
to log level 4 (stats-only), so it's useful to be able to request more
verbose logs at log level 2. Teach test_verifier to recognize -vv as
"very verbose" mode switch and use log level 2 in such mode.

Also force verifier stats regradless of -v or -vv, they are very minimal
and useful to be always emitted in verbose mode.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20221005161450.1064469-1-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-10-05 16:55:11 -07:00
Eduard Zingerman d503f1176b selftests/bpf: Test btf dump for struct with padding only fields
Structures with zero regular fields but some padding constitute a
special case in btf_dump.c:btf_dump_emit_struct_def with regards to
newline before closing '}'.

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221001104425.415768-2-eddyz87@gmail.com
2022-10-05 15:27:08 -07:00
Eduard Zingerman 44a726c3f2 bpftool: Print newline before '}' for struct with padding only fields
btf_dump_emit_struct_def attempts to print empty structures at a
single line, e.g. `struct empty {}`. However, it has to account for a
case when there are no regular but some padding fields in the struct.
In such case `vlen` would be zero, but size would be non-zero.

E.g. here is struct bpf_timer from vmlinux.h before this patch:

 struct bpf_timer {
 	long: 64;
	long: 64;};

And after this patch:

 struct bpf_dynptr {
 	long: 64;
	long: 64;
 };

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221001104425.415768-1-eddyz87@gmail.com
2022-10-05 15:27:08 -07:00
Linus Torvalds 7fb68b6c82 platform-drivers-x86 for v6.1-1
Highlights:
  -  AMD Platform Management Framework (PMF) driver with AMT and QnQF support
  -  AMD PMC: Improved logging for debugging s2idle issues
  -  Big refactor of the ACPI/x86 backlight handling, ensuring that we only
     register 1 /sys/class/backlight device per LCD panel
  -  Microsoft Surface:
     -  Surface Laptop Go 2 support
     -  Surface Pro 8 HID sensor support
  -  Asus WMI:
     -  Lots of cleanups
     -  Support for TUF RGB keyboard backlight control
     -  Add support for ROG X13 tablet mode
  -  Siemens Simatic: IPC227G and IPC427G support
  -  Toshiba ACPI laptop driver: Fan hwmon and battery ECO mode support
  -  tools/power/x86/intel-speed-select: Various improvements
  -  Various cleanups
  -  Various small bugfixes
 
 The following is an automated git shortlog grouped by driver:
 
 ACPI:
  -  video: Change disable_backlight_sysfs_if quirks to acpi_backlight=native
  -  s2idle: Add a new ->check() callback for platform_s2idle_ops
  -  video: Fix indentation of video_detect_dmi_table[] entries
  -  video: Drop NL5x?U, PF4NU1F and PF5?U?? acpi_backlight=native quirks
  -  video: Drop "Samsung X360" acpi_backlight=native quirk
  -  video: Remove acpi_video_set_dmi_backlight_type()
  -  video: Add Apple GMUX brightness control detection
  -  video: Add Nvidia WMI EC brightness control detection (v3)
  -  video: Refactor acpi_video_get_backlight_type() a bit
  -  video: Remove code to unregister acpi_video backlight when a native backlight registers
  -  video: Make backlight class device registration a separate step (v2)
  -  video: Simplify acpi_video_unregister_backlight()
  -  video: Remove acpi_video_bus from list before tearing it down
  -  video: Drop backlight_device_get_by_type() call from acpi_video_get_backlight_type()
  -  video: Add acpi_video_backlight_use_native() helper
 
 acer-wmi:
  -  Move backlight DMI quirks to acpi/video_detect.c
  -  Acer Aspire One AOD270/Packard Bell Dot keymap fixes
 
 apple-gmux:
  -  Stop calling acpi/video.h functions
 
 asus-wmi:
  -  Expand support of GPU fan to read RPM and label
  -  Make kbd_rgb_mode_groups static
  -  Move acpi_backlight=native quirks to ACPI video_detect.c
  -  Move acpi_backlight=vendor quirks to ACPI video_detect.c
  -  Drop DMI chassis-type check from backlight handling
  -  Increase FAN_CURVE_BUF_LEN to 32
  -  Fix the name of the mic-mute LED classdev
  -  Implement TUF laptop keyboard power states
  -  Implement TUF laptop keyboard LED modes
  -  Support the GPU fan on TUF laptops
  -  Modify behaviour of Fn+F5 fan key
  -  Update tablet_mode_sw module-param help text
  -  Simplify tablet-mode-switch handling
  -  Simplify tablet-mode-switch probing
  -  Add support for ROG X13 tablet mode
  -  Adjust tablet/lidflip handling to use enum
  -  Support the hardware GPU MUX on some laptops
  -  Simplify some of the *_check_present() helpers
  -  Refactor panel_od attribute
  -  Refactor egpu_enable attribute
  -  Refactor disable_gpu attribute
  -  Document the panel_od sysfs attribute
  -  Document the egpu_enable sysfs attribute
  -  Document the dgpu_disable sysfs attribute
  -  Use kobj_to_dev()
  -  Convert all attr-show to use sysfs_emit
 
 compal-laptop:
  -  Get rid of a few forward declarations
 
 dell-privacy:
  -  convert to use dev_groups
 
 dell-smbios-base:
  -  Use sysfs_emit()
 
 dell-wmi:
  -  Add WMI event 0x0012 0x0003 to the list
 
 docs:
  -  ABI: charge_control_end_threshold may not support all values
 
 drivers/platform:
  -  toshiba_acpi: Call HCI_PANEL_POWER_ON on resume on some models
 
 drm/amdgpu:
  -  Register ACPI video backlight when skipping amdgpu backlight registration
  -  Don't register backlight when another backlight should be used (v3)
 
 drm/i915:
  -  Call acpi_video_register_backlight() (v3)
  -  Don't register backlight when another backlight should be used (v2)
 
 drm/nouveau:
  -  Register ACPI video backlight when nv_backlight registration fails (v2)
  -  Don't register backlight when another backlight should be used (v2)
 
 drm/radeon:
  -  Register ACPI video backlight when skipping radeon backlight registration
  -  Don't register backlight when another backlight should be used (v3)
 
 drm/todo:
  -  Add entry about dealing with brightness control on devices with > 1 panel
 
 gpio-f7188x:
  -  use unique labels for banks/chips
  -  Add GPIO support for Nuvoton NCT6116
  -  add a prefix to macros to keep gpio namespace clean
  -  switch over to using pr_fmt
 
 hp-wmi:
  -  Support touchpad on/off
  -  Setting thermal profile fails with 0x06
 
 int3472/discrete:
  -  Drop a forward declaration
 
 intel-uncore-freq:
  -  Use sysfs_emit() to instead of scnprintf()
 
 intel_cht_int33fe:
  -  Fix comment according to the code flow
 
 leds:
  -  simatic-ipc-leds-gpio: Make simatic_ipc_led_gpio_table static
  -  simatic-ipc-leds-gpio: add new model 227G
 
 move from strlcpy with unused retval to strscpy:
  - move from strlcpy with unused retval to strscpy
 
 msi-laptop:
  -  Change DMI match / alias strings to fix module autoloading
  -  Add msi_scm_disable_hw_fn_handling() helper
  -  Add msi_scm_model_exit() helper
  -  Fix resource cleanup
  -  Simplify ec_delay handling
  -  Fix old-ec check for backlight registering
  -  Drop MSI_DRIVER_VERSION
  -  Use MODULE_DEVICE_TABLE()
 
 nvidia-wmi-ec-backlight:
  -  Use acpi_video_get_backlight_type()
  -  Move fw interface definitions to a header (v2)
 
 p2sb:
  -  Fix UAF when caller uses resource name
 
 platform/mellanox:
  -  mlxreg-lc: Make error handling flow consistent
  -  Remove redundant 'NULL' check
  -  Remove unnecessary code
  -  mlxreg-lc: Fix locking issue
  -  mlxreg-lc: Fix coverity warning
 
 platform/surface:
  -  Split memcpy() of struct ssam_event flexible array
  -  aggregator_registry: Add HID devices for sensors and UCSI client to SP8
  -  aggregator_registry: Rename HID device nodes based on new findings
  -  aggregator_registry: Rename HID device nodes based on their function
  -  aggregator_registry: Add support for Surface Laptop Go 2
 
 platform/x86:
  - use PLATFORM_DEVID_NONE instead of -1
 
 platform/x86/amd:
  -  pmc: Dump idle mask during "check" stage instead
  -  pmc: remove CONFIG_DEBUG_FS checks
  -  pmc: Fix build without debugfs
  -  pmc: Add sysfs files for SMU
  -  pmc: Add an extra STB message for checking s2idle entry
  -  pmc: Always write to the STB
  -  pmc: Add defines for STB events
 
 platform/x86/amd/pmf:
  -  Remove unused power_delta instances
  -  install notify handler after acpi init
  -  Add sysfs to toggle CnQF
  -  Add support for CnQF
  -  Fix clang unused variable warning
  -  Fix undefined reference to platform_profile
  -  Force load driver on older supported platforms
  -  Handle AMT and CQL events for Auto mode
  -  Add support for Auto mode feature
  -  Get performance metrics from PMFW
  -  Add fan control support
  -  Add heartbeat signal support
  -  Add debugfs information
  -  Add support SPS PMF feature
  -  Add support for PMF APCI layer
  -  Add support for PMF core layer
  -  Add ABI doc for AMD PMF
  -  Add AMD PMF driver entry
 
 platform/x86/intel/wmi:
  -  thunderbolt: Use dev_groups callback
 
 pmc_atom:
  -  Amend comment style and grammar
  -  Make terminator entry uniform
  -  Improve quirk message to be less cryptic
  -  Fix SLP_TYPx bitfield mask
 
 samsung-laptop:
  -  Move acpi_backlight=[vendor|native] quirks to ACPI video_detect.c
 
 simatic-ipc:
  -  add new model 427G
  -  enable watchdog for 227G
 
 thinkpad_acpi:
  -  Explicitly set to balanced mode on startup
 
 tools/power/x86/intel-speed-select:
  -  Release v1.13
  -  Optimize CPU initialization
  -  Utilize cpu_map to get physical id
  -  Remove unused struct clos_config fields
  -  Enforce isst_id value
  -  Do not export get_physical_id
  -  Introduce is_cpu_in_power_domain helper
  -  Cleanup get_physical_id usage
  -  Convert more function to use isst_id
  -  Add pkg and die in isst_id
  -  Introduce struct isst_id
  -  Remove unused core_mask array
  -  Remove dead code
  -  Fix cpu count for TDP level display
 
 toshiba_acpi:
  -  change turn_on_panel_on_resume to static
  -  Remove duplicate include
  -  Set correct parent for input device.
  -  Add fan RPM reading (hwmon interface)
  -  Add fan RPM reading (internals)
  -  Stop using acpi_video_set_dmi_backlight_type()
  -  Fix ECO LED control on Toshiba Z830
  - Battery charge mode in toshiba_acpi (internals)
  - Battery charge mode in toshiba_acpi (sysfs)
 
 wmi:
  -  Drop forward declaration of static functions
  -  Allow duplicate GUIDs for drivers that use struct wmi_driver
 
 x86-android-tablets:
  -  Fix broken touchscreen on Chuwi Hi8 with Windows BIOS
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Merge tag 'platform-drivers-x86-v6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver updates from Hans de Goede:

 - AMD Platform Management Framework (PMF) driver with AMT and QnQF
   support

 - AMD PMC: Improved logging for debugging s2idle issues

 - Big refactor of the ACPI/x86 backlight handling, ensuring that we
   only register 1 /sys/class/backlight device per LCD panel

 - Microsoft Surface:
    - Surface Laptop Go 2 support
    - Surface Pro 8 HID sensor support

 - Asus WMI:
    - Lots of cleanups
    - Support for TUF RGB keyboard backlight control
    - Add support for ROG X13 tablet mode

 - Siemens Simatic: IPC227G and IPC427G support

 - Toshiba ACPI laptop driver: Fan hwmon and battery ECO mode support

 - tools/power/x86/intel-speed-select: Various improvements

 - Various cleanups

 - Various small bugfixes

* tag 'platform-drivers-x86-v6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (153 commits)
  platform/x86: use PLATFORM_DEVID_NONE instead of -1
  platform/x86/amd: pmc: Dump idle mask during "check" stage instead
  platform/x86/intel/wmi: thunderbolt: Use dev_groups callback
  platform/x86/amd: pmc: remove CONFIG_DEBUG_FS checks
  platform/surface: Split memcpy() of struct ssam_event flexible array
  platform/x86: compal-laptop: Get rid of a few forward declarations
  platform/x86: intel-uncore-freq: Use sysfs_emit() to instead of scnprintf()
  platform/x86: dell-smbios-base: Use sysfs_emit()
  platform/x86/amd/pmf: Remove unused power_delta instances
  platform/x86/amd/pmf: install notify handler after acpi init
  Documentation/ABI/testing/sysfs-amd-pmf: Add ABI doc for AMD PMF
  platform/x86/amd/pmf: Add sysfs to toggle CnQF
  platform/x86/amd/pmf: Add support for CnQF
  platform/x86/amd: pmc: Fix build without debugfs
  platform/x86: hp-wmi: Support touchpad on/off
  platform/x86: int3472/discrete: Drop a forward declaration
  platform/x86: toshiba_acpi: change turn_on_panel_on_resume to static
  platform/x86: wmi: Drop forward declaration of static functions
  platform/x86: toshiba_acpi: Remove duplicate include
  platform/x86: msi-laptop: Change DMI match / alias strings to fix module autoloading
  ...
2022-10-05 10:38:24 -07:00
Meng Li bf6430f851 cpufreq: amd-pstate: Add explanation for X86_AMD_PSTATE_UT
This kernel module is used for testing. It's safe to say M here.
It can also be built-in without X86_AMD_PSTATE enabled.
Currently, only tests for amd-pstate are supported. If X86_AMD_PSTATE
is set disabled, it can tell the users test can only run on amd-pstate
driver, please set X86_AMD_PSTATE enabled.
In the future, comparison tests will be added. It can set amd-pstate
disabled and set acpi-cpufreq enabled to run test cases, then compare
the test results.

Suggested-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Meng Li <li.meng@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-10-05 11:05:18 -06:00
Zhao Gongyi 96788ac53d selftests/cpu-hotplug: Add log info when test success
Add log information when run full test successfully.

Signed-off-by: Zhao Gongyi <zhaogongyi@huawei.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-10-05 11:05:18 -06:00