Commit Graph

983015 Commits

Author SHA1 Message Date
Namhyung Kim a1bf23052b perf stat: Take cgroups into account for shadow stats
As of now it doesn't consider cgroups when collecting shadow stats and
metrics so counter values from different cgroups will be saved in a same
slot.  This resulted in incorrect numbers when those cgroups have
different workloads.

For example, let's look at the scenario below: cgroups A and C runs same
workload which burns a cpu while cgroup B runs a light workload.

  $ perf stat -a -e cycles,instructions --for-each-cgroup A,B,C  sleep 1

   Performance counter stats for 'system wide':

     3,958,116,522      cycles                A
     6,722,650,929      instructions          A #    2.53  insn per cycle
         1,132,741      cycles                B
           571,743      instructions          B #    0.00  insn per cycle
     4,007,799,935      cycles                C
     6,793,181,523      instructions          C #    2.56  insn per cycle

       1.001050869 seconds time elapsed

When I run 'perf stat' with single workload, it usually shows IPC around
1.7.  We can verify it (6,722,650,929.0 / 3,958,116,522 = 1.698) for cgroup A.

But in this case, since cgroups are ignored, cycles are averaged so it
used the lower value for IPC calculation and resulted in around 2.5.

  avg cycle: (3958116522 + 1132741 + 4007799935) / 3 = 2655683066
  IPC (A)  :  6722650929 / 2655683066 = 2.531
  IPC (B)  :      571743 / 2655683066 = 0.0002
  IPC (C)  :  6793181523 / 2655683066 = 2.557

We can simply compare cgroup pointers in the evsel and it'll be NULL
when cgroups are not specified.  With this patch, I can see correct
numbers like below:

  $ perf stat -a -e cycles,instructions --for-each-cgroup A,B,C  sleep 1

  Performance counter stats for 'system wide':

     4,171,051,687      cycles                A
     7,219,793,922      instructions          A #    1.73  insn per cycle
         1,051,189      cycles                B
           583,102      instructions          B #    0.55  insn per cycle
     4,171,124,710      cycles                C
     7,192,944,580      instructions          C #    1.72  insn per cycle

       1.007909814 seconds time elapsed

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210115071139.257042-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-01-15 17:28:27 -03:00
Namhyung Kim 3ff1e7180a perf stat: Introduce struct runtime_stat_data
To pass more info to the saved_value in the runtime_stat, add a new
struct runtime_stat_data.  Currently it only has 'ctx' field but later
patch will add more.

Note that we intentionally pass 0 as ctx to clock-related events for
compatibility.  It was already there in a few places.  So move the code
into the saved_value_lookup() explicitly and add a comment.

Suggested-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210115071139.257042-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-01-15 17:28:27 -03:00
Ian Rogers 66dd86b2a2 libperf tests: Fail when failing to get a tracepoint id
Permissions are necessary to get a tracepoint id. Fail the test when the
read fails.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210114180250.3853825-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-01-15 17:28:27 -03:00
Ian Rogers bba2ea17ef libperf tests: If a test fails return non-zero
If a test fails return -1 rather than 0. This is consistent with the
return value in test-cpumap.c

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210114180250.3853825-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-01-15 17:28:27 -03:00
Ian Rogers be82fddca8 libperf tests: Avoid uninitialized variable warning
The variable 'bf' is read (for a write call) without being initialized
triggering a memory sanitizer warning. Use 'bf' in the read and switch
the write to reading from a string.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210114212304.4018119-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-01-15 17:28:27 -03:00
Daejun Park e9f53353e1 ext4: remove expensive flush on fast commit
In the fast commit, it adds REQ_FUA and REQ_PREFLUSH on each fast
commit block when barrier is enabled.  However, in recovery phase,
ext4 compares CRC value in the tail.  So it is sufficient to add
REQ_FUA and REQ_PREFLUSH on the block that has tail.

Signed-off-by: Daejun Park <daejun7.park@samsung.com>
Reviewed-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Link: https://lore.kernel.org/r/20210106013242epcms2p5b6b4ed8ca86f29456fdf56aa580e74b4@epcms2p5
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2021-01-15 14:41:31 -05:00
yangerkun 6b4b8e6b4a ext4: fix bug for rename with RENAME_WHITEOUT
We got a "deleted inode referenced" warning cross our fsstress test. The
bug can be reproduced easily with following steps:

  cd /dev/shm
  mkdir test/
  fallocate -l 128M img
  mkfs.ext4 -b 1024 img
  mount img test/
  dd if=/dev/zero of=test/foo bs=1M count=128
  mkdir test/dir/ && cd test/dir/
  for ((i=0;i<1000;i++)); do touch file$i; done # consume all block
  cd ~ && renameat2(AT_FDCWD, /dev/shm/test/dir/file1, AT_FDCWD,
    /dev/shm/test/dir/dst_file, RENAME_WHITEOUT) # ext4_add_entry in
    ext4_rename will return ENOSPC!!
  cd /dev/shm/ && umount test/ && mount img test/ && ls -li test/dir/file1
  We will get the output:
  "ls: cannot access 'test/dir/file1': Structure needs cleaning"
  and the dmesg show:
  "EXT4-fs error (device loop0): ext4_lookup:1626: inode #2049: comm ls:
  deleted inode referenced: 139"

ext4_rename will create a special inode for whiteout and use this 'ino'
to replace the source file's dir entry 'ino'. Once error happens
latter(the error above was the ENOSPC return from ext4_add_entry in
ext4_rename since all space has been consumed), the cleanup do drop the
nlink for whiteout, but forget to restore 'ino' with source file. This
will trigger the bug describle as above.

Signed-off-by: yangerkun <yangerkun@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@vger.kernel.org
Fixes: cd808deced ("ext4: support RENAME_WHITEOUT")
Link: https://lore.kernel.org/r/20210105062857.3566-1-yangerkun@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2021-01-15 14:41:31 -05:00
Daejun Park 31e203e09f ext4: fix wrong list_splice in ext4_fc_cleanup
After full/fast commit, entries in staging queue are promoted to main
queue. In ext4_fs_cleanup function, it splice to staging queue to
staging queue.

Fixes: aa75f4d3da ("ext4: main fast-commit commit path")
Signed-off-by: Daejun Park <daejun7.park@samsung.com>
Reviewed-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Link: https://lore.kernel.org/r/20201230094851epcms2p6eeead8cc984379b37b2efd21af90fd1a@epcms2p6
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
2021-01-15 14:40:12 -05:00
Yi Li 23dd561ad9 ext4: use IS_ERR instead of IS_ERR_OR_NULL and set inode null when IS_ERR
1: ext4_iget/ext4_find_extent never returns NULL, use IS_ERR
instead of IS_ERR_OR_NULL to fix this.

2: ext4_fc_replay_inode should set the inode to NULL when IS_ERR.
and go to call iput properly.

Fixes: 8016e29f43 ("ext4: fast commit recovery path")
Signed-off-by: Yi Li <yili@winhong.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20201230033827.3996064-1-yili@winhong.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
2021-01-15 14:39:14 -05:00
Namhyung Kim a042a82ddb perf test: Fix shadow stat test for non-bash shells
It was using some bash-specific features and failed to parse when
running with a different shell like below:

  root@kbl-ppc:~/kbl-ws/perf-dev/lck-9077/acme.tmp/tools/perf# ./perf test 83 -vv
  83: perf stat metrics (shadow stat) test                            :
  --- start ---
  test child forked, pid 3922
  ./tests/shell/stat+shadow_stat.sh: 19: ./tests/shell/stat+shadow_stat.sh: [[: not found
  ./tests/shell/stat+shadow_stat.sh: 24: ./tests/shell/stat+shadow_stat.sh: [[: not found
  ./tests/shell/stat+shadow_stat.sh: 30: ./tests/shell/stat+shadow_stat.sh: [[: not found
  (standard_in) 2: syntax error
  ./tests/shell/stat+shadow_stat.sh: 36: ./tests/shell/stat+shadow_stat.sh: [[: not found
  ./tests/shell/stat+shadow_stat.sh: 19: ./tests/shell/stat+shadow_stat.sh: [[: not found
  ./tests/shell/stat+shadow_stat.sh: 24: ./tests/shell/stat+shadow_stat.sh: [[: not found
  ./tests/shell/stat+shadow_stat.sh: 30: ./tests/shell/stat+shadow_stat.sh: [[: not found
  (standard_in) 2: syntax error
  ./tests/shell/stat+shadow_stat.sh: 36: ./tests/shell/stat+shadow_stat.sh: [[: not found
  ./tests/shell/stat+shadow_stat.sh: 45: ./tests/shell/stat+shadow_stat.sh: declare: not found
  test child finished with -1
  ---- end ----
  perf stat metrics (shadow stat) test: FAILED!

Reported-by: Jin Yao <yao.jin@linux.intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Laight <david.laight@aculab.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210114050609.1258820-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-01-15 16:31:46 -03:00
Arnaldo Carvalho de Melo addbdff242 tools headers: Syncronize linux/build_bug.h with the kernel sources
To pick up the changes in:

  3a176b9460 ("Revert "kbuild: avoid static_assert for genksyms"")

And silence this perf build warning:

  Warning: Kernel ABI header at 'tools/include/linux/build_bug.h' differs from latest version at 'include/linux/build_bug.h'
  diff -u tools/include/linux/build_bug.h include/linux/build_bug.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-01-15 16:31:46 -03:00
Arnaldo Carvalho de Melo 38c53947a7 tools headers UAPI: Sync kvm.h headers with the kernel sources
To pick the changes in:

  647daca25d ("KVM: SVM: Add support for booting APs in an SEV-ES guest")

That don't cause any tooling change, just silences this perf build
warning:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
  diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h

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>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-01-15 16:31:46 -03:00
Arnaldo Carvalho de Melo 301f0203e0 perf bpf examples: Fix bpf.h header include directive in 5sec.c example
It was looking at bpf/bpf.h, which caused this problem:

  # perf trace -e tools/perf/examples/bpf/5sec.c
  /home/acme/git/perf/tools/perf/examples/bpf/5sec.c:42:10: fatal error: 'bpf/bpf.h' file not found
  #include <bpf/bpf.h>
           ^~~~~~~~~~~
  1 error generated.
  ERROR:	unable to compile tools/perf/examples/bpf/5sec.c
  Hint:	Check error message shown above.
  Hint:	You can also pre-compile it into .o using:
       		clang -target bpf -O2 -c tools/perf/examples/bpf/5sec.c
       	with proper -I and -D options.
  event syntax error: 'tools/perf/examples/bpf/5sec.c'
                       \___ Failed to load tools/perf/examples/bpf/5sec.c from source: Error when compiling BPF scriptlet
  #

Change that to plain bpf.h, to make it work again:

  # perf trace -e tools/perf/examples/bpf/5sec.c sleep 5s
       0.000 perf_bpf_probe:hrtimer_nanosleep(__probe_ip: -1776891872, rqtp: 5000000000)
  # perf trace -e tools/perf/examples/bpf/5sec.c/max-stack=16/ sleep 5s
       0.000 perf_bpf_probe:hrtimer_nanosleep(__probe_ip: -1776891872, rqtp: 5000000000)
                                         hrtimer_nanosleep ([kernel.kallsyms])
                                         common_nsleep ([kernel.kallsyms])
                                         __x64_sys_clock_nanosleep ([kernel.kallsyms])
                                         do_syscall_64 ([kernel.kallsyms])
                                         entry_SYSCALL_64_after_hwframe ([kernel.kallsyms])
                                         __clock_nanosleep_2 (/usr/lib64/libc-2.32.so)
  # perf trace -e tools/perf/examples/bpf/5sec.c sleep 4s
  #

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>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-01-15 16:31:46 -03:00
Linus Torvalds f4e087c666 ACPI fixes for 5.11-rc4
- Harden the ACPI device enumeration code against device ID length
    overflows to address a Linux VM cash on Hyper-V (Dexuan Cui).
 
  - Fix a mistake in the documentation of error type values for PCIe
    errors (Qiuxu Zhuo).
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Merge tag 'acpi-5.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "These address a device ID bounds check error in the device enumeration
  code and fix a mistake in the documentation.

  Specifics:

   - Harden the ACPI device enumeration code against device ID length
     overflows to address a Linux VM cash on Hyper-V (Dexuan Cui).

   - Fix a mistake in the documentation of error type values for PCIe
     errors (Qiuxu Zhuo)"

* tag 'acpi-5.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  Documentation: ACPI: EINJ: Fix error type values for PCIe errors
  ACPI: scan: Harden acpi_device_add() against device ID overflows
2021-01-15 10:55:33 -08:00
Linus Torvalds dcda487c9c xen: branch for v5.11-rc4
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Merge tag 'for-linus-5.11-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:

 - A series to fix a regression when running as a fully virtualized
   guest on an old Xen hypervisor not supporting PV interrupt callbacks
   for HVM guests.

 - A patch to add support to query Xen resource sizes (setting was
   possible already) from user mode.

* tag 'for-linus-5.11-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  x86/xen: Fix xen_hvm_smp_init() when vector callback not available
  x86/xen: Don't register Xen IPIs when they aren't going to be used
  x86/xen: Add xen_no_vector_callback option to test PCI INTX delivery
  xen: Set platform PCI device INTX affinity to CPU0
  xen: Fix event channel callback via INTX/GSI
  xen/privcmd: allow fetching resource sizes
2021-01-15 10:52:00 -08:00
Linus Torvalds 7aec71cd9c iommu fixes for -rc4
- Fix address alignment handling for VT-D TLB invalidation
 
 - Enable workarounds for buggy Qualcomm firmware on two more SoCs
 
 - Drop duplicate #include
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Merge tag 'iommu-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull iommu fixes from Will Deacon:
 "Three IOMMU fixes for -rc4.

  The main one is a change to the Intel IOMMU driver to fix the handling
  of unaligned addresses when invalidating the TLB.

  The fix itself is a bit ugly (the caller does a bunch of shifting
  which is then effectively undone later in the callchain), but Lu has
  patches to clean all of this up in 5.12.

  Summary:

   - Fix address alignment handling for VT-D TLB invalidation

   - Enable workarounds for buggy Qualcomm firmware on two more SoCs

   - Drop duplicate #include"

* tag 'iommu-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  iommu/vt-d: Fix duplicate included linux/dma-map-ops.h
  iommu: arm-smmu-qcom: Add sdm630/msm8998 compatibles for qcom quirks
  iommu/vt-d: Fix unaligned addresses for intel_flush_svm_range_dev()
2021-01-15 10:48:58 -08:00
Linus Torvalds 02c06dc375 drm nouveau ampere display support.
This is a pull request to add display support for new Ampere hardware.
 
 It has no effect on older GPUs.
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Merge tag 'topic/nouveau-ampere-modeset-2021-01-15' of git://anongit.freedesktop.org/drm/drm

Pull drm nouveau ampere display support from Dave Airlie:
 "Ben has requested if we can include Ampere modesetting support under
  fixes, it's for new GPUs and shouldn't affect existing hardware.

  It's a bit bigger than just adding a PCI ID, but It has no effect on
  older GPUs"

* tag 'topic/nouveau-ampere-modeset-2021-01-15' of git://anongit.freedesktop.org/drm/drm:
  drm/nouveau/disp/ga10[24]: initial support
  drm/nouveau/dmaobj/ga10[24]: initial support
  drm/nouveau/i2c/ga10[024]: initial support
  drm/nouveau/gpio/ga10[024]: initial support
  drm/nouveau/bar/ga10[024]: initial support
  drm/nouveau/mmu/ga10[024]: initial support
  drm/nouveau/timer/ga10[024]: initial support
  drm/nouveau/fb/ga10[024]: initial support
  drm/nouveau/imem/ga10[024]: initial support
  drm/nouveau/privring/ga10[024]: initial support
  drm/nouveau/mc/ga10[024]: initial support
  drm/nouveau/devinit/ga10[024]: initial support
  drm/nouveau/bios/ga10[024]: initial support
  drm/nouveau/pci/ga10[024]: initial support
  drm/nouveau/core: recognise GA10[024]
2021-01-15 10:45:54 -08:00
Rafael J. Wysocki 179892adb0 Merge branch 'acpi-docs'
* acpi-docs:
  Documentation: ACPI: EINJ: Fix error type values for PCIe errors
2021-01-15 19:15:49 +01:00
Marcelo Diop-Gonzalez f010505b78 io_uring: flush timeouts that should already have expired
Right now io_flush_timeouts() checks if the current number of events
is equal to ->timeout.target_seq, but this will miss some timeouts if
there have been more than 1 event added since the last time they were
flushed (possible in io_submit_flush_completions(), for example). Fix
it by recording the last sequence at which timeouts were flushed so
that the number of events seen can be compared to the number of events
needed without overflow.

Signed-off-by: Marcelo Diop-Gonzalez <marcelo827@gmail.com>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-01-15 10:02:28 -07:00
Mark Brown 3a57a643a8 arm64: selftests: Fix spelling of 'Mismatch'
The SVE and FPSIMD stress tests have a spelling mistake in the output, fix
it.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210108183144.673-1-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2021-01-15 10:05:27 +00:00
Mark Rutland b6d8878d24 arm64: syscall: include prototype for EL0 SVC functions
The kbuild test robot reports that when building with W=1, GCC will warn
for a couple of missing prototypes in syscall.c:

|  arch/arm64/kernel/syscall.c:157:6: warning: no previous prototype for 'do_el0_svc' [-Wmissing-prototypes]
|    157 | void do_el0_svc(struct pt_regs *regs)
|        |      ^~~~~~~~~~
|  arch/arm64/kernel/syscall.c:164:6: warning: no previous prototype for 'do_el0_svc_compat' [-Wmissing-prototypes]
|    164 | void do_el0_svc_compat(struct pt_regs *regs)
|        |      ^~~~~~~~~~~~~~~~~

While this isn't a functional problem, as a general policy we should
include the prototype for functions wherever possible to catch any
accidental divergence between the prototype and implementation. Here we
can easily include <asm/exception.h>, so let's do so.

While there are a number of warnings elsewhere and some warnings enabled
under W=1 are of questionable benefit, this change helps to make the
code more robust as it evolved and reduces the noise somewhat, so it
seems worthwhile.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/202101141046.n8iPO3mw-lkp@intel.com
Link: https://lore.kernel.org/r/20210114124812.17754-1-mark.rutland@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2021-01-15 10:05:27 +00:00
Will Deacon dca5244d2f compiler.h: Raise minimum version of GCC to 5.1 for arm64
GCC versions >= 4.9 and < 5.1 have been shown to emit memory references
beyond the stack pointer, resulting in memory corruption if an interrupt
is taken after the stack pointer has been adjusted but before the
reference has been executed. This leads to subtle, infrequent data
corruption such as the EXT4 problems reported by Russell King at the
link below.

Life is too short for buggy compilers, so raise the minimum GCC version
required by arm64 to 5.1.

Reported-by: Russell King <linux@armlinux.org.uk>
Suggested-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: <stable@vger.kernel.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20210105154726.GD1551@shell.armlinux.org.uk
Link: https://lore.kernel.org/r/20210112224832.10980-1-will@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2021-01-15 10:04:49 +00:00
Dave Airlie 584265dfec Merge branch '04.01-ampere-lite' of git://github.com/skeggsb/linux into topic/nouveau-ampere-modeset
This adds support for basic modeseting on the nvidia ampere chipsets. This code should all
be contained to just those and have no effect on current hardware.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Ben Skeggs <skeggsb@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CACAvsv5LmMP+HbDUQBf_dy1-0eS9fA32k8HWo4y5X4-7rsw-yw@mail.gmail.com
2021-01-15 14:48:18 +10:00
Linus Torvalds 5ee8805788 drm fixes for 5.11-rc4
dma-buf:
 - Fix a memory leak in CMAV heap
 
 core:
 - Fix format check for legacy pageflips
 
 ttm:
 - Pass correct address to dma_mapping_error()
 - Use mutex in pool shrinker
 
 i915:
 - Allow the sysadmin to override security mitigations
 - Restore clear-residual mitigations for ivb/byt
 - Limit VFE threads based on GT
 - GVT: fix vfio edid and full display detection
 - Fix DSI DSC power refcounting
 - Fix LPT CPU mode backlight takeover
 - Disable RPM wakeref assertions during driver shutdown
 - Fix DSI sequence sleeps
 
 amdgpu:
 - Update repo location in MAINTAINERS
 - Add some new renoir PCI IDs
 - Revert CRC UAPI changes
 - Revert OLED display fix which cases clocking problems for some systems
 - Misc vangogh fixes
 - GFX fix for sienna cichlid
 - DCN1.0 fix for pipe split
 - Fix incorrect PSP command
 
 amdkfd:
 - Fix possible out of bounds read in vcrat creation
 
 nouveau:
 - irq handling fix
 - expansion ROM fix
 - hw init dpcd disable
 - aux semaphore owner field fix
 - vram heap sizing fix
 - notifier at 0 is valid fix
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Merge tag 'drm-fixes-2021-01-15' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Regular fixes for rc4, a bunch of fixes across i915, amdgpu and
  nouveau here, along with a couple of TTM fixes, and dma-buf and one
  core pageflip/modifier interaction fix.

  One notable i915 fix is a HSW GT1 regression fix that has been
  outstanding for quite a while. (Thanks to Matt Turner for kicking
  Intel into getting it fixed).

  dma-buf:
   - Fix a memory leak in CMAV heap

  core:
   - Fix format check for legacy pageflips

  ttm:
   - Pass correct address to dma_mapping_error()
   - Use mutex in pool shrinker

  i915:
   - Allow the sysadmin to override security mitigations
   - Restore clear-residual mitigations for ivb/byt
   - Limit VFE threads based on GT
   - GVT: fix vfio edid and full display detection
   - Fix DSI DSC power refcounting
   - Fix LPT CPU mode backlight takeover
   - Disable RPM wakeref assertions during driver shutdown
   - Fix DSI sequence sleeps

  amdgpu:
   - Update repo location in MAINTAINERS
   - Add some new renoir PCI IDs
   - Revert CRC UAPI changes
   - Revert OLED display fix which cases clocking problems for some systems
   - Misc vangogh fixes
   - GFX fix for sienna cichlid
   - DCN1.0 fix for pipe split
   - Fix incorrect PSP command

  amdkfd:
   - Fix possible out of bounds read in vcrat creation

  nouveau:
   - irq handling fix
   - expansion ROM fix
   - hw init dpcd disable
   - aux semaphore owner field fix
   - vram heap sizing fix
   - notifier at 0 is valid fix"

* tag 'drm-fixes-2021-01-15' of git://anongit.freedesktop.org/drm/drm: (37 commits)
  drm/nouveau/kms/nv50-: fix case where notifier buffer is at offset 0
  drm/nouveau/mmu: fix vram heap sizing
  drm/nouveau/i2c/gm200: increase width of aux semaphore owner fields
  drm/nouveau/i2c/gk110-: disable hw-initiated dpcd reads
  drm/nouveau/i2c/gk110: split out from i2c/gk104
  drm/nouveau/privring: ack interrupts the same way as RM
  drm/nouveau/bios: fix issue shadowing expansion ROMs
  drm/amd/display: Fix to be able to stop crc calculation
  Revert "drm/amd/display: Expose new CRC window property"
  Revert "drm/amdgpu/disply: fix documentation warnings in display manager"
  Revert "drm/amd/display: Fix unused variable warning"
  drm/amdgpu: set power brake sequence
  drm/amdgpu: add new device id for Renior
  drm/amdgpu: add green_sardine device id (v2)
  drm/amdgpu: fix vram type and bandwidth error for DDR5 and DDR4
  drm/amdgpu/gfx10: add updated GOLDEN_TSC_COUNT_UPPER/LOWER register offsets for VGH
  drm/amdkfd: Fix out-of-bounds read in kdf_create_vcrat_image_cpu()
  Revert "drm/amd/display: Fixed Intermittent blue screen on OLED panel"
  drm/amd/display: disable dcn10 pipe split by default
  drm/amd/display: Add a missing DCN3.01 API mapping
  ...
2021-01-14 20:10:06 -08:00
Linus Torvalds cdaed11031 Update bootconf scripts for tracing_on option
The tracing_on option is supported by bootconfig entries, but the scripts to
 convert from ftrace to a bootconfig and back were not updated.
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Merge tag 'trace-v5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull bootconfig fix from Steven Rostedt:
 "Update bootconf scripts for tracing_on option

  The tracing_on option is supported by bootconfig entries, but the
  scripts to convert from ftrace to a bootconfig and back were not
  updated"

* tag 'trace-v5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tools/bootconfig: Add tracing_on support to helper scripts
2021-01-14 20:06:29 -08:00
Dave Airlie c8f6364f35 Merge branch '04.00-ampere-lite-fixes' of git://github.com/skeggsb/linux into drm-fixes
As requested, here's a tree with the non-Ampere-specific fixes split
out, as most of them are potentially relevant to already-supported
GPUs.

- irq handling fix
- expansion ROM fix
- hw init dpcd disable
- aux semaphore owner field fix
- vram heap sizing fix
- notifier at 0 is valid fix

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Ben Skeggs <skeggsb@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CACAvsv4P90mcF_ByAh+ghz+ZVD2N2bPbD7xHYYArE1kYrvsGcQ@mail.gmail.com
2021-01-15 13:26:44 +10:00
Kefeng Wang dec822771b
riscv: stacktrace: Move register keyword to beginning of declaration
Using global sp_in_global directly to fix the following warning,

arch/riscv/kernel/stacktrace.c:31:3: warning: ‘register’ is not at beginning of declaration [-Wold-style-declaration]
31 |   const register unsigned long current_sp = sp_in_global;
   |   ^~~~~

Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-01-14 18:31:47 -08:00
Dave Airlie 8e1095901d Merge tag 'amd-drm-fixes-5.11-2021-01-14' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-5.11-2021-01-14:

amdgpu:
- Update repo location in MAINTAINERS
- Add some new renoir PCI IDs
- Revert CRC UAPI changes
- Revert OLED display fix which cases clocking problems for some systems
- Misc vangogh fixes
- GFX fix for sienna cichlid
- DCN1.0 fix for pipe split
- Fix incorrect PSP command

amdkfd:
- Fix possible out of bounds read in vcrat creation

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210114201354.3998-1-alexander.deucher@amd.com
2021-01-15 11:56:22 +10:00
Dave Airlie 667d11dcd6 Merge tag 'drm-intel-fixes-2021-01-14' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
drm/i915 fixes for v5.11-rc4:
- Allow the sysadmin to override security mitigations
- Restore clear-residual mitigations for ivb/byt
- Limit VFE threads based on GT
- GVT: fix vfio edid and full display detection
- Fix DSI DSC power refcounting
- Fix LPT CPU mode backlight takeover
- Disable RPM wakeref assertions during driver shutdown
- Fix DSI sequence sleeps

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87sg73pz42.fsf@intel.com
2021-01-15 11:47:05 +10:00
Ben Skeggs 8ef23b6f6a drm/nouveau/disp/ga10[24]: initial support
UEFI/RM no longer use IED scripts from the VBIOS, though they appear to
have been updated for use by the x86 VBIOS code, so we should be able to
continue using them for the moment.

Unfortunately, we require some hacks to do so, as the BeforeLinkTraining
IED script became a pointer to an array of scripts instead, without a
revbump of the relevant tables.

There's also some changes to SOR clock divider fiddling, which are
hopefully correct enough that things work as they should.

AFAIK, GA100 shouldn't have display, so it hasn't been added.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:24 +10:00
Ben Skeggs a6cf0320aa drm/nouveau/dmaobj/ga10[24]: initial support
Appears to be compatible with GV100 code, and not required on GA100, as
it shouldn't have display.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:24 +10:00
Ben Skeggs 8a0412265f drm/nouveau/i2c/ga10[024]: initial support
Appears to be compatible with GM200 code.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:23 +10:00
Ben Skeggs c28efb15f9 drm/nouveau/gpio/ga10[024]: initial support
GA100 appears to be compatible with GK104 code, the others have some
register moves.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:23 +10:00
Ben Skeggs f5cbe7c8bd drm/nouveau/bar/ga10[024]: initial support
Appears to be compatible with TU102 code.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:22 +10:00
Ben Skeggs a3abc23ac4 drm/nouveau/mmu/ga10[024]: initial support
Appears to be compatible with TU102 code.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:22 +10:00
Ben Skeggs 6f300e0a0b drm/nouveau/timer/ga10[024]: initial support
Appears to be compatible with GK20A code.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:21 +10:00
Ben Skeggs 41ba806f40 drm/nouveau/fb/ga10[024]: initial support
No VPR scrub.  GA102 and GA104 have a new VRAM size detection method.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:21 +10:00
Ben Skeggs de4781d0f2 drm/nouveau/imem/ga10[024]: initial support
Appears to be compatible with NV50 code.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:20 +10:00
Ben Skeggs e0df4bbfc3 drm/nouveau/privring/ga10[024]: initial support
Appears to be compatible with GM200 code.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:20 +10:00
Ben Skeggs 5961c62d20 drm/nouveau/mc/ga10[024]: initial support
Fortunately, all the interrupts we need to bring up basic display support
are contained in a single leaf register, allowing this basic (but hackish)
implementation.

There's a bunch more invasive patches to come implementing all this in a
better/more complete way, but trying to get a minimal series out first.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:20 +10:00
Ben Skeggs 7ddf5e9597 drm/nouveau/devinit/ga10[024]: initial support
VPLL regs changed a bit.  There's more stuff to do around these, but it's
less invasive to stick those changes into disp for now.

None of that belongs here anymore anyhow - fix that someday.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:19 +10:00
Ben Skeggs a34632482f drm/nouveau/bios/ga10[024]: initial support
Forcing PRAMIN-shadowing off for GA100, as it requires display, and we don't
know if/where the fuse register for detecting its presence is.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:19 +10:00
Ben Skeggs 70afbe4bdc drm/nouveau/pci/ga10[024]: initial support
Appears to be compatible with GP100 code.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:18 +10:00
Ben Skeggs caeb6ab899 drm/nouveau/kms/nv50-: fix case where notifier buffer is at offset 0
VRAM offset 0 is a valid address, triggered on GA102.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:17 +10:00
Ben Skeggs 3b050680c8 drm/nouveau/core: recognise GA10[024]
GA100 hidden behind a module option, as it's not been as well verified
since initial bring-up and may need additional changes.

There's no display anyway, so this can wait for a bit.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:17 +10:00
Ben Skeggs add42781ad drm/nouveau/mmu: fix vram heap sizing
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:17 +10:00
Ben Skeggs ba6e9ab0fc drm/nouveau/i2c/gm200: increase width of aux semaphore owner fields
Noticed while debugging GA102.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:16 +10:00
Ben Skeggs 8ad95edc39 drm/nouveau/i2c/gk110-: disable hw-initiated dpcd reads
RM does this around transactions, and it seemed to help while debugging
AUXCH issues on GA102.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:16 +10:00
Ben Skeggs b5510d1e21 drm/nouveau/i2c/gk110: split out from i2c/gk104
No functional changes here yet.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:15 +10:00
Ben Skeggs e05e06cd34 drm/nouveau/privring: ack interrupts the same way as RM
Whatever it is that we were doing before doesn't work on Ampere.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2021-01-15 10:25:15 +10:00