We get constant feedback that the command line invocation of make is too
long when compiling with LLVM. CROSS_COMPILE is helpful when a toolchain
has a prefix of the target triple, or is an absolute path outside of
$PATH.
Since a Clang binary is generally multi-targeted, we can infer a given
target from SRCARCH/ARCH. If CROSS_COMPILE is not set, simply set
--target= for CLANG_FLAGS, KBUILD_CFLAGS, and KBUILD_AFLAGS based on
$SRCARCH.
Previously, we'd cross compile via:
$ ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make LLVM=1 LLVM_IAS=1
Now:
$ ARCH=arm64 make LLVM=1 LLVM_IAS=1
For native builds (not involving cross compilation) we now explicitly
specify a target triple rather than rely on the implicit host triple.
Link: https://github.com/ClangBuiltLinux/linux/issues/1399
Suggested-by: Arnd Bergmann <arnd@kernel.org>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Suggested-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Arnd Bergmann <arnd@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
With some of the changes we'd like to make to CROSS_COMPILE, the initial
block of clang flag handling which controls things like the target triple,
whether or not to use the integrated assembler and how to find GAS,
and erroring on unknown warnings is becoming unwieldy. Move it into its
own file under scripts/.
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
It is always safe to use the same compiler for the kernel and external
modules, but in reality, some distributions such as Fedora release a
different version of GCC from the one used for building the kernel.
There was a long discussion about mixing different compilers [1].
I do not repeat it here, but at least, showing a heads up in that
case is better than nothing.
Linus suggested [2]:
And a warning might be more palatable even if different compiler
version work fine together. Just a heads up on "it looks like you
might be mixing compiler versions" is a valid note, and isn't
necessarily wrong. Even when they work well together, maybe you want
to have people at least _aware_ of it.
This commit shows a warning unless the compiler is exactly the same.
warning: the compiler differs from the one used to build the kernel
The kernel was built by: gcc (GCC) 11.1.1 20210531 (Red Hat 11.1.1-3)
You are using: gcc (GCC) 11.2.1 20210728 (Red Hat 11.2.1-1)
Check the difference, and if it is OK with you, please proceed at your
risk.
To avoid the locale issue as in commit bcbcf50f52 ("kbuild: fix
ld-version.sh to not be affected by locale"), pass LC_ALL=C to
"$(CC) --version".
[1] https://lore.kernel.org/linux-hardening/efe6b039a544da8215d5e54aa7c4b6d1986fc2b0.1611607264.git.jpoimboe@redhat.com/
[2] https://lore.kernel.org/lkml/CAHk-=wgjwhDy-y4mQh34L+2aF=n6BjzHdqAW2=8wri5x7O04pA@mail.gmail.com/
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Set the x bit to some scripts to make them directly executable.
Especially, scripts/checkdeclares.pl is not hooked by anyone.
It should be executable since it is tedious to type
'perl scripts/checkdeclares.pl'.
The original patch [1] set the x bit properly, but it was lost when
it was merged as commit 21917bded7 ("scripts: a new script for
checking duplicate struct declaration").
[1] https://lore.kernel.org/lkml/20210401110943.1010796-1-wanjiabing@vivo.com/
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
As explained in commit 3204a7fb98 ("kbuild: prefix $(srctree)/ to some
included Makefiles"), I want to stop using --include-dir some day.
I already fixed up the top Makefile, but some arch Makefiles (mips, um,
x86) still include check-in Makefiles without $(srctree)/.
Fix them up so 'need-sub-make := 1' can go away for this case.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
When merging configuration fragments, it might be of interest to
identify mismatches (redefinitions) programmatically. Hence add the
option -s (strict mode) to instruct merge_config.sh to bail out in
case any redefinition has been detected.
With strict mode, warnings are emitted as before, but the script
terminates with rc=1. If -y is set to define "builtin having
precedence over modules", fragments are still allowed to set =m (while
the base config has =y). Strict mode will tolerate that as demotions
from =y to =m are ignored when setting -y.
Signed-off-by: Matthias Maennich <maennich@google.com>
Reviewed-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
- Prevent a memory ordering issue in the timer expiry code which makes it
possible to observe falsely that the callback has been executed already
while that's not the case, which violates the guarantee of del_timer_sync().
-----BEGIN PGP SIGNATURE-----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=JQWW
-----END PGP SIGNATURE-----
Merge tag 'timers-urgent-2021-08-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
"A single timer fix:
- Prevent a memory ordering issue in the timer expiry code which
makes it possible to observe falsely that the callback has been
executed already while that's not the case, which violates the
guarantee of del_timer_sync()"
* tag 'timers-urgent-2021-08-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timers: Move clearing of base::timer_running under base:: Lock
- Prevent a double enqueue caused by rt_effective_prio() being invoked
twice in __sched_setscheduler().
-----BEGIN PGP SIGNATURE-----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=EZjT
-----END PGP SIGNATURE-----
Merge tag 'sched-urgent-2021-08-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Thomas Gleixner:
"A single scheduler fix:
- Prevent a double enqueue caused by rt_effective_prio() being
invoked twice in __sched_setscheduler()"
* tag 'sched-urgent-2021-08-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/rt: Fix double enqueue caused by rt_effective_prio
- Correct the permission checks for perf event which send SIGTRAP to a
different process and clean up that code to be more readable.
- Prevent an out of bound MSR access in the x86 perf code which happened
due to an incomplete limiting to the actually available hardware
counters.
- Prevent access to the AMD64_EVENTSEL_HOSTONLY bit when running inside a
guest.
- Handle small core counter re-enabling correctly by issuing an ACK right
before reenabling it to prevent a stale PEBS record being kept around.
-----BEGIN PGP SIGNATURE-----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=hhv+
-----END PGP SIGNATURE-----
Merge tag 'perf-urgent-2021-08-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
"A set of perf fixes:
- Correct the permission checks for perf event which send SIGTRAP to
a different process and clean up that code to be more readable.
- Prevent an out of bound MSR access in the x86 perf code which
happened due to an incomplete limiting to the actually available
hardware counters.
- Prevent access to the AMD64_EVENTSEL_HOSTONLY bit when running
inside a guest.
- Handle small core counter re-enabling correctly by issuing an ACK
right before reenabling it to prevent a stale PEBS record being
kept around"
* tag 'perf-urgent-2021-08-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel: Apply mid ACK for small core
perf/x86/amd: Don't touch the AMD64_EVENTSEL_HOSTONLY bit inside the guest
perf/x86: Fix out of bound MSR access
perf: Refactor permissions check into perf_check_permission()
perf: Fix required permissions if sigtrap is requested
Here are some small char/misc driver fixes for 5.14-rc5.
They resolve a few regressions that people reported:
- acrn driver fix
- fpga driver fix
- interconnect tiny driver fixes
All have been in linux-next for a while with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYQ+oWw8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ymihQCglZZdlg1HFVLx6zBvIR5cOAODRwkAoJgOMVnl
ngKziJBQqPHbT1KE49Uz
=jFHY
-----END PGP SIGNATURE-----
Merge tag 'char-misc-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small char/misc driver fixes for 5.14-rc5.
They resolve a few regressions that people reported:
- acrn driver fix
- fpga driver fix
- interconnect tiny driver fixes
All have been in linux-next for a while with no reported issues"
* tag 'char-misc-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
interconnect: Fix undersized devress_alloc allocation
interconnect: qcom: icc-rpmh: Add BCMs to commit list in pre_aggregate
interconnect: qcom: icc-rpmh: Ensure floor BW is enforced for all nodes
fpga: dfl: fme: Fix cpu hotplug issue in performance reporting
virt: acrn: Do hcall_destroy_vm() before resource release
interconnect: Always call pre_aggregate before aggregate
interconnect: Zero initial BW after sync-state
Here are 3 tiny driver core and firmware loader fixes for 5.14-rc5.
They are:
- driver core fix for when probing fails
- firmware loader fixes for reported problems.
All have been in linux-next for a while with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYQ+8JQ8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ymIQwCfYqUdpxPvUxe6/EWlOVLm6cpUASgAoI2rWoo9
ot6ywUCioFv4ehVzVtKc
=c5WG
-----END PGP SIGNATURE-----
Merge tag 'driver-core-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are three tiny driver core and firmware loader fixes for
5.14-rc5. They are:
- driver core fix for when probing fails
- firmware loader fixes for reported problems.
All have been in linux-next for a while with no reported issues"
* tag 'driver-core-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
firmware_loader: fix use-after-free in firmware_fallback_sysfs
firmware_loader: use -ETIMEDOUT instead of -EAGAIN in fw_load_sysfs_fallback
drivers core: Fix oops when driver probe fails
Here are a few small staging driver fixes for 5.14-rc5 to resolve some
reported problems. They include:
- mt7621 driver fix
- rtl8723bs driver fixes
- rtl8712 driver fixes.
Nothing major, just small problems resolved.
All have been in linux-next for a while with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYQ+9kQ8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ylsOwCcDMdcfuu1KI/gwuUwqvYqe+tJ8cUAn3oQSwV7
aGb+wVJbgoXM0MFknrdA
=B3Gi
-----END PGP SIGNATURE-----
Merge tag 'staging-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are a few small staging driver fixes for 5.14-rc5 to resolve some
reported problems. They include:
- mt7621 driver fix
- rtl8723bs driver fixes
- rtl8712 driver fixes.
Nothing major, just small problems resolved.
All have been in linux-next for a while with no reported issues"
* tag 'staging-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: mt7621-pci: avoid to re-disable clock for those pcies not in use
staging: rtl8712: error handling refactoring
staging: rtl8712: get rid of flush_scheduled_work
staging: rtl8723bs: select CONFIG_CRYPTO_LIB_ARC4
staging: rtl8723bs: Fix a resource leak in sd_int_dpc
Here are some small tty/serial driver fixes for 5.14-rc5 to resolve a
number of reported problems.
They include:
- mips serial driver fixes
- 8250 driver fixes for reported problems
- fsl_lpuart driver fixes
- other tiny driver fixes
All have been in linux-next for a while with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYQ++cg8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ylzoQCcC2zlnRRex48ovvh/b4JtKgImP6IAn2wR2Ag+
tSpMfooJBaT5a9kcg+Vr
=U7hC
-----END PGP SIGNATURE-----
Merge tag 'tty-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some small tty/serial driver fixes for 5.14-rc5 to resolve a
number of reported problems.
They include:
- mips serial driver fixes
- 8250 driver fixes for reported problems
- fsl_lpuart driver fixes
- other tiny driver fixes
All have been in linux-next for a while with no reported problems"
* tag 'tty-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: 8250_pci: Avoid irq sharing for MSI(-X) interrupts.
serial: 8250_mtk: fix uart corruption issue when rx power off
tty: serial: fsl_lpuart: fix the wrong return value in lpuart32_get_mctrl
serial: 8250_pci: Enumerate Elkhart Lake UARTs via dedicated driver
serial: 8250: fix handle_irq locking
serial: tegra: Only print FIFO error message when an error occurs
MIPS: Malta: Do not byte-swap accesses to the CBUS UART
serial: 8250: Mask out floating 16/32-bit bus bits
serial: max310x: Unprepare and disable clock in error path
Here are some small USB driver fixes for 5.14-rc5. They resolve a
number of small reported issues, including:
- cdnsp driver fixes
- usb serial driver fixes and device id updates
- usb gadget hid fixes
- usb host driver fixes
- usb dwc3 driver fixes
- other usb gadget driver fixes
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYQ+/ow8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ymdLACeMlXNPA5S/YJd+vak0Oer1mjNQWkAoJAZKLEN
bvN1v5wYjPs0mIFJUwj0
=xb57
-----END PGP SIGNATURE-----
Merge tag 'usb-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB driver fixes from Greg KH:
"Here are some small USB driver fixes for 5.14-rc5. They resolve a
number of small reported issues, including:
- cdnsp driver fixes
- usb serial driver fixes and device id updates
- usb gadget hid fixes
- usb host driver fixes
- usb dwc3 driver fixes
- other usb gadget driver fixes
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (21 commits)
usb: typec: tcpm: Keep other events when receiving FRS and Sourcing_vbus events
usb: dwc3: gadget: Avoid runtime resume if disabling pullup
usb: dwc3: gadget: Use list_replace_init() before traversing lists
USB: serial: ftdi_sio: add device ID for Auto-M3 OP-COM v2
USB: serial: pl2303: fix GT type detection
USB: serial: option: add Telit FD980 composition 0x1056
USB: serial: pl2303: fix HX type detection
USB: serial: ch341: fix character loss at high transfer rates
usb: cdnsp: Fix the IMAN_IE_SET and IMAN_IE_CLEAR macro
usb: cdnsp: Fixed issue with ZLP
usb: cdnsp: Fix incorrect supported maximum speed
usb: cdns3: Fixed incorrect gadget state
usb: gadget: f_hid: idle uses the highest byte for duration
Revert "thunderbolt: Hide authorized attribute if router does not support PCIe tunnels"
usb: otg-fsm: Fix hrtimer list corruption
usb: host: ohci-at91: suspend/resume ports after/before OHCI accesses
usb: musb: Fix suspend and resume issues for PHYs on I2C and SPI
usb: gadget: f_hid: added GET_IDLE and SET_IDLE handlers
usb: gadget: f_hid: fixed NULL pointer dereference
usb: gadget: remove leaked entry from udc driver list
...
-----BEGIN PGP SIGNATURE-----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=FAeG
-----END PGP SIGNATURE-----
Merge tag 'io_uring-5.14-2021-08-07' of git://git.kernel.dk/linux-block
Pull io_uring from Jens Axboe:
"A few io-wq related fixes:
- Fix potential nr_worker race and missing max_workers check from one
path (Hao)
- Fix race between worker exiting and new work queue (me)"
* tag 'io_uring-5.14-2021-08-07' of git://git.kernel.dk/linux-block:
io-wq: fix lack of acct->nr_workers < acct->max_workers judgement
io-wq: fix no lock protection of acct->nr_worker
io-wq: fix race between worker exiting and activating free worker
* A fix to avoid dereferencing a null task pointer while walking the
stack.
* A fix to the memory size in the HiFive Unleashed device tree.
* A fix to disable stack protectors when randstruct is enabled, which
results in non-deterministic offsets during module builds.
* A pair of fixes to avoid relying on a constant physical memory base
for the non-XIP builds.
-----BEGIN PGP SIGNATURE-----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=yf+K
-----END PGP SIGNATURE-----
Merge tag 'riscv-for-linus-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- avoid dereferencing a null task pointer while walking the stack
- fix the memory size in the HiFive Unleashed device tree
- disable stack protectors when randstruct is enabled, which results in
non-deterministic offsets during module builds
- a pair of fixes to avoid relying on a constant physical memory base
for the non-XIP builds
* tag 'riscv-for-linus-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
Revert "riscv: Remove CONFIG_PHYS_RAM_BASE_FIXED"
riscv: Get rid of CONFIG_PHYS_RAM_BASE in kernel physical address conversion
riscv: Disable STACKPROTECTOR_PER_TASK if GCC_PLUGIN_RANDSTRUCT is enabled
riscv: dts: fix memory size for the SiFive HiFive Unmatched
riscv: stacktrace: Fix NULL pointer dereference
- Correct the Extended Regular Expressions in tools
- Adjust scripts/checkversion.pl for the current Kbuild
- Unset sub_make_done for 'make install' to make DKMS working again
-----BEGIN PGP SIGNATURE-----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=M+2q
-----END PGP SIGNATURE-----
Merge tag 'kbuild-fixes-v5.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Correct the Extended Regular Expressions in tools
- Adjust scripts/checkversion.pl for the current Kbuild
- Unset sub_make_done for 'make install' to make DKMS work again
* tag 'kbuild-fixes-v5.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: cancel sub_make_done for the install target to fix DKMS
scripts: checkversion: modernize linux/version.h search strings
mips: Fix non-POSIX regexp
x86/tools/relocs: Fix non-POSIX regexp
This reverts commit 9b79878ced.
The removal of this config exposes CONFIG_PHYS_RAM_BASE for all kernel
types: this value being implementation-specific, this breaks the
genericity of the RISC-V kernel so revert it.
Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
Tested-by: Emil Renner Berthing <kernel@esmil.dk>
Reviewed-by: Jisheng Zhang <jszhang@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
The usage of CONFIG_PHYS_RAM_BASE for all kernel types was a mistake:
this value is implementation-specific and this breaks the genericity of
the RISC-V kernel.
Fix this by introducing a new variable phys_ram_base that holds this
value at runtime and use it in the kernel physical address conversion
macro. Since this value is used only for XIP kernels, evaluate it only if
CONFIG_XIP_KERNEL is set which in addition optimizes this macro for
standard kernels at compile-time.
Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
Tested-by: Emil Renner Berthing <kernel@esmil.dk>
Reviewed-by: Jisheng Zhang <jszhang@kernel.org>
Fixes: 44c9225729 ("RISC-V: enable XIP")
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
The kyber ioscheduler calls trace_block_rq_insert() *after* the request
is added to the queue but the documentation for trace_block_rq_insert()
says that the call should be made *before* the request is added to the
queue. Move the tracepoint for the kyber ioscheduler so that it is
consistent with the documentation.
Signed-off-by: Vincent Fu <vincent.fu@samsung.com>
Link: https://lore.kernel.org/r/20210804194913.10497-1-vincent.fu@samsung.com
Reviewed by: Adam Manzanares <a.manzanares@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAmENbm0ACgkQ8vlZVpUN
gaNEEQf7B8GXPqJvRgqhJwCdqmZqz8DB7dfjqT0SB99f1EL3VoeHEvo+yEgMqD3L
cSYRFh4efEHgr51HSZoIPINqcU9hs86SvFmjd6jWIcnY/EJLd0g3e8aEWpJ3S5rR
3avSC4tiDbn34GgDeoR2DFG6RsGbRxDUEEzkrd8h7Hx6q39s3aXdi89lBmBe8rg/
lIVaeivZrZ7SfY/YFEziF0P7KurJNju6lGwqm0xAqu79J9QaabXMF1u5GPjUi2rw
TIaLMSP6O5VQbQwskcTIhJlKSAB4aUIB+fMV5Zi2cCXAKGdzK24xdM5VbzOeKAAX
1EwOE9GEyytpxD1P0zb8vVGsJW3wjQ==
=hQAS
-----END PGP SIGNATURE-----
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"A regression fix, bug fix, and a comment cleanup for ext4"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix potential htree corruption when growing large_dir directories
ext4: remove conflicting comment from __ext4_forget
ext4: fix potential uninitialized access to retval in kmmpd
As callbacks to a tracepoint are paired with the data that is passed in when
the callback is registered to the tracepoint, it must have that data passed
to the callback when the tracepoint is triggered, else bad things will
happen. To keep the two together, they are both assigned to a tracepoint
structure and added to an array. The tracepoint call site will dereference
the structure (via RCU) and call the callback in that structure along with
the data in that structure. This keeps the callback and data tightly
coupled.
Because of the overhead that retpolines have on tracepoint callbacks, if
there's only one callback attached to a tracepoint (a common case), then it
is called via a static call (code modified to do a direct call instead of an
indirect call). But to implement this, the data had to be decoupled from the
callback, as now the callback is implemented via a direct call from the
static call and not an indirect call from the dereferenced structure.
Note, the static call only calls a callback used when there's a single
callback attached to the tracepoint. If more than one callback is attached
to the same tracepoint, then the static call will call an iterator
function that goes back to dereferencing the structure keeping the callback
and its data tightly coupled again.
Issues can arise when going from 0 callbacks to one, as the static call is
assigned to the callback, and it must take care that the data passed to it
is loaded before the static call calls the callback. Going from 1 to 2
callbacks is not an issue, as long as the static call is updated to the
iterator before the tracepoint structure array is updated via RCU. Going
from 2 to more or back down to 2 is not an issue as the iterator can handle
all theses cases. But going from 2 to 1, care must be taken as the static
call is now calling a callback and the data that is loaded must be the data
for that callback.
Care was taken to ensure the callback and data would be in-sync, but after
a bug was reported, it became clear that not enough was done to make sure
that was the case. These changes address this.
The first change is to compare the old and new data instead of the old and
new callback, as it's the data that can corrupt the callback, even if the
callback is the same (something getting freed).
The next change is to convert these transitions into states, to make it
easier to know when a synchronization is needed, and to perform those
synchronizations. The problem with this patch is that it slows down
disabling all events from under a second, to making it take over 10 seconds
to do the same work. But that is addressed in the final patch.
The final patch uses the RCU state functions to keep track of the RCU state
between the transitions, and only needs to perform the synchronization if an
RCU synchronization hasn't been done already. This brings the performance of
disabling all events back to its original value. That's because no
synchronization is required between disabling tracepoints but is required
when enabling a tracepoint after its been disabled. If an RCU
synchronization happens after the tracepoint is disabled, and before it is
re-enabled, there's no need to do the synchronization again.
Both the second and third patch have subtle complexities that they are
separated into two patches. But because the second patch causes such a
regression in performance, the third patch adds a "Fixes" tag to the second
patch, such that the two must be backported together and not just the second
patch.
-----BEGIN PGP SIGNATURE-----
iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYQ15TBQccm9zdGVkdEBn
b29kbWlzLm9yZwAKCRAp5XQQmuv6qnmmAP4hoA34CDr5hrd8mYLeKptW63f5Nd1w
fVZjprfa1wJhZAEAq39OeRCT4Fb2hIeZNBNUnLU90f+J6NH5QFDEhW+CkAI=
=JcZS
-----END PGP SIGNATURE-----
Merge tag 'trace-v5.14-rc4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"Fix tracepoint race between static_call and callback data
As callbacks to a tracepoint are paired with the data that is passed
in when the callback is registered to the tracepoint, it must have
that data passed to the callback when the tracepoint is triggered,
else bad things will happen. To keep the two together, they are both
assigned to a tracepoint structure and added to an array. The
tracepoint call site will dereference the structure (via RCU) and call
the callback in that structure along with the data in that structure.
This keeps the callback and data tightly coupled.
Because of the overhead that retpolines have on tracepoint callbacks,
if there's only one callback attached to a tracepoint (a common case),
then it is called via a static call (code modified to do a direct call
instead of an indirect call). But to implement this, the data had to
be decoupled from the callback, as now the callback is implemented via
a direct call from the static call and not an indirect call from the
dereferenced structure.
Note, the static call only calls a callback used when there's a single
callback attached to the tracepoint. If more than one callback is
attached to the same tracepoint, then the static call will call an
iterator function that goes back to dereferencing the structure
keeping the callback and its data tightly coupled again.
Issues can arise when going from 0 callbacks to one, as the static
call is assigned to the callback, and it must take care that the data
passed to it is loaded before the static call calls the callback.
Going from 1 to 2 callbacks is not an issue, as long as the static
call is updated to the iterator before the tracepoint structure array
is updated via RCU. Going from 2 to more or back down to 2 is not an
issue as the iterator can handle all theses cases. But going from 2 to
1, care must be taken as the static call is now calling a callback and
the data that is loaded must be the data for that callback.
Care was taken to ensure the callback and data would be in-sync, but
after a bug was reported, it became clear that not enough was done to
make sure that was the case. These changes address this.
The first change is to compare the old and new data instead of the old
and new callback, as it's the data that can corrupt the callback, even
if the callback is the same (something getting freed).
The next change is to convert these transitions into states, to make
it easier to know when a synchronization is needed, and to perform
those synchronizations. The problem with this patch is that it slows
down disabling all events from under a second, to making it take over
10 seconds to do the same work. But that is addressed in the final
patch.
The final patch uses the RCU state functions to keep track of the RCU
state between the transitions, and only needs to perform the
synchronization if an RCU synchronization hasn't been done already.
This brings the performance of disabling all events back to its
original value. That's because no synchronization is required between
disabling tracepoints but is required when enabling a tracepoint after
its been disabled. If an RCU synchronization happens after the
tracepoint is disabled, and before it is re-enabled, there's no need
to do the synchronization again.
Both the second and third patch have subtle complexities that they are
separated into two patches. But because the second patch causes such a
regression in performance, the third patch adds a "Fixes" tag to the
second patch, such that the two must be backported together and not
just the second patch"
* tag 'trace-v5.14-rc4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracepoint: Use rcu get state and cond sync for static call updates
tracepoint: Fix static call function vs data state mismatch
tracepoint: static call: Compare data on transition from 2->1 callees
Fix a recent regression in the timer events oriented (TEO) cpuidle
governor causing it to misbehave when idle state 0 is disabled and
rename two local variables for improved clarity on top of that.
-----BEGIN PGP SIGNATURE-----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=CPqq
-----END PGP SIGNATURE-----
Merge tag 'pm-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"Fix a recent regression in the timer events oriented (TEO) cpuidle
governor causing it to misbehave when idle state 0 is disabled and
rename two local variables for improved clarity on top of that"
* tag 'pm-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpuidle: teo: Rename two local variables in teo_select()
cpuidle: teo: Fix alternative idle state lookup
Revert a recent ACPICA commit causing boot issues to appear on some
systems.
-----BEGIN PGP SIGNATURE-----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=TD4+
-----END PGP SIGNATURE-----
Merge tag 'acpi-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"Revert a recent ACPICA commit causing boot issues to appear on some
systems"
* tag 'acpi-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
Revert "ACPICA: Fix memory leak caused by _CID repair function"
Lots of small fixes for Arm SoCs this time, nothing
too worrying:
- omap/beaglebone boot regression fix in gpt12 timer
- revert for i.mx8 soc driver breaking as a platform_driver
- kexec/kdump fixes for op-tee
- various fixes for incorrect DT settings on imx, mvebu, omap,
stm32, and tegra causing problems.
- device tree fixes for static checks in nomadik, versatile, stm32
- code fixes for issues found in build testing and with static
checking on tegra, ixp4xx, imx, omap
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
-----BEGIN PGP SIGNATURE-----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=h0YB
-----END PGP SIGNATURE-----
Merge tag 'soc-fixes-5.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"Lots of small fixes for Arm SoCs this time, nothing too worrying:
- omap/beaglebone boot regression fix in gpt12 timer
- revert for i.mx8 soc driver breaking as a platform_driver
- kexec/kdump fixes for op-tee
- various fixes for incorrect DT settings on imx, mvebu, omap, stm32,
and tegra causing problems.
- device tree fixes for static checks in nomadik, versatile, stm32
- code fixes for issues found in build testing and with static
checking on tegra, ixp4xx, imx, omap"
* tag 'soc-fixes-5.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (36 commits)
soc: ixp4xx/qmgr: fix invalid __iomem access
soc: ixp4xx: fix printing resources
ARM: ixp4xx: goramo_mlr depends on old PCI driver
ARM: ixp4xx: fix compile-testing soc drivers
soc/tegra: Make regulator couplers depend on CONFIG_REGULATOR
ARM: dts: nomadik: Fix up interrupt controller node names
ARM: dts: stm32: Fix touchscreen IRQ line assignment on DHCOM
ARM: dts: stm32: Disable LAN8710 EDPD on DHCOM
ARM: dts: stm32: Prefer HW RTC on DHCOM SoM
omap5-board-common: remove not physically existing vdds_1v8_main fixed-regulator
ARM: dts: am437x-l4: fix typo in can@0 node
ARM: dts: am43x-epos-evm: Reduce i2c0 bus speed for tps65218
bus: ti-sysc: AM3: RNG is GP only
ARM: omap2+: hwmod: fix potential NULL pointer access
arm64: dts: armada-3720-turris-mox: remove mrvl,i2c-fast-mode
arm64: dts: armada-3720-turris-mox: fixed indices for the SDHC controllers
ARM: dts: imx: Swap M53Menlo pinctrl_power_button/pinctrl_power_out pins
ARM: imx: fix missing 3rd argument in macro imx_mmdc_perf_init
ARM: dts: colibri-imx6ull: limit SDIO clock to 25MHz
arm64: dts: ls1028: sl28: fix networking for variant 2
...
- Fix extension/truncation of return values from 32-bit system calls
- Fix interaction between unwinding and tracing
- Fix spurious toolchain warning emitted during make
- Fix Kconfig help text for RANDOMIZE_MODULE_REGION_FULL
-----BEGIN PGP SIGNATURE-----
iQFEBAABCgAuFiEEPxTL6PPUbjXGY88ct6xw3ITBYzQFAmENI3EQHHdpbGxAa2Vy
bmVsLm9yZwAKCRC3rHDchMFjND+yB/95tpp4xswHHjM9CGaBsupVesgnA0DUINPf
mUWiB5TEYdG0jbB5yOV/VJhjN4nXLpvOJna0RUses3VKXK75v88X1Zha74AKBBD+
3GKu768nXZFHOJT4zMQJ0N8642m4XHFSeyeHxiJk6zxPsvU9O27/UxkyxZ2RCKPq
4av/yK3JBac1eqKWSdhZ3spms43WtmikoaPdL1dLLbH2lBRCTbFuo7zhVmrl9MuZ
tpkoLkgW6I+Tquck0//F7jRjxdeQEMWNIV+hybm36VDuYe5EbKRQCetdksJsXBml
CiADCPh2JshAfkygtTrZTKd4uo1/rHQPvmJ9ZhR7oQZlEsaVuosw
=zi/m
-----END PGP SIGNATURE-----
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"It's all pretty minor but the main fix is sorting out how we deal with
return values from 32-bit system calls as audit expects error codes to
be sign-extended to 64 bits
Summary:
- Fix extension/truncation of return values from 32-bit system calls
- Fix interaction between unwinding and tracing
- Fix spurious toolchain warning emitted during make
- Fix Kconfig help text for RANDOMIZE_MODULE_REGION_FULL"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: stacktrace: avoid tracing arch_stack_walk()
arm64: stacktrace: fix comment
arm64: fix the doc of RANDOMIZE_MODULE_REGION_FULL
arm64: move warning about toolchains to archprepare
arm64: fix compat syscall return truncation
A small collection of fixes for SPI, small mostly driver specific things
plus a fix for module autoloading which hadn't been working properly for
DT systems.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmENTEUACgkQJNaLcl1U
h9CmsQf9GnIyNfbLOUkpW8Cb5Thm0WWAUr8vBR63rJl+Q6uSSuJirzXzexKGRBlT
g/y3zfPvmmJqSKrivD8GhXvFei0eCubg43hXImL23z2R2o85E4yS1S0VOKSK8cfE
ir/vGxRVi8vrm0VlOTRtP5ueXrCMmIHNiq7Dp1ZBIY9Qkr59Aj61by+pd2jtnCDJ
sCIZUQsUJeNtS3FGSnAcINqNdlgnebA54k3CktGo2DUwwy506ECDpf8tHlKRtL5A
SH89ON8h/jRU/wtcDFclFVEys+W2nyzVZ5/O0vUWwHvH336TMzPJMT+SqyQ3xT/L
9MU//psaWAQaiWT70SY1/9MSMEwKGw==
=LXn1
-----END PGP SIGNATURE-----
Merge tag 'spi-fix-v5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A small collection of fixes for SPI, small mostly driver specific
things plus a fix for module autoloading which hadn't been working
properly for DT systems"
* tag 'spi-fix-v5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: cadence-quadspi: Fix check condition for DTR ops
spi: mediatek: Fix fifo transfer
spi: imx: mx51-ecspi: Fix CONFIGREG delay comment
spi: imx: mx51-ecspi: Fix low-speed CONFIGREG delay calculation
spi: update modalias_show after of_device_uevent_modalias support
spi: meson-spicc: fix memory leak in meson_spicc_remove
spi: spi-mux: Add module info needed for autoloading
Bunch of driver fixes, notably:
- idxd driver fixes for submission race, driver remove sequence, setup
sequence for MSIXPERM, array index and updating descriptor vector
- usb-dmac, pm reference leak fix
- xilinx_dma, read-after-free fix
- uniphier-xdmac fix for using atomic readl_poll_timeout_atomic()
- of-dma, router_xlate to return
- imx-dma, generic dma fix
-----BEGIN PGP SIGNATURE-----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=knOL
-----END PGP SIGNATURE-----
Merge tag 'dmaengine-fix-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine fixes from Vinod Koul:
"A bunch of driver fixes, notably:
- idxd driver fixes for submission race, driver remove sequence,
setup sequence for MSIXPERM, array index and updating descriptor
vector
- usb-dmac, pm reference leak fix
- xilinx_dma, read-after-free fix
- uniphier-xdmac fix for using atomic readl_poll_timeout_atomic()
- of-dma, router_xlate to return
- imx-dma, generic dma fix"
* tag 'dmaengine-fix-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
dmaengine: imx-dma: configure the generic DMA type to make it work
dmaengine: of-dma: router_xlate to return -EPROBE_DEFER if controller is not yet available
dmaengine: stm32-dmamux: Fix PM usage counter unbalance in stm32 dmamux ops
dmaengine: stm32-dma: Fix PM usage counter imbalance in stm32 dma ops
dmaengine: uniphier-xdmac: Use readl_poll_timeout_atomic() in atomic state
dmaengine: idxd: fix submission race window
dmaengine: idxd: fix sequence for pci driver remove() and shutdown()
dmaengine: idxd: fix desc->vector that isn't being updated
dmaengine: idxd: fix setup sequence for MSIXPERM table
dmaengine: idxd: fix array index when int_handles are being used
dmaengine: usb-dmac: Fix PM reference leak in usb_dmac_probe()
dmaengine: xilinx_dma: Fix read-after-free bug when terminating transfers
Several small recent regressions:
- Typo causing incorrect operation of the mlx5 mkey cache expiration
- Revert a CM patch that is breaking some ULPs
- Typo breaking SRQ in rxe
- Revert a rxe patch breaking icrc calculation
- Static checker warning about unbalance locking in hns
- Subtle cxgb4 regression from a recent atomic to refcount conversion
-----BEGIN PGP SIGNATURE-----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=dwUD
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma fixes from Jason Gunthorpe:
"Several small recent regressions - rather more than usual, but nothing
too scary. Good to know people are testing.
- Typo causing incorrect operation of the mlx5 mkey cache
expiration
- Revert a CM patch that is breaking some ULPs
- Typo breaking SRQ in rxe
- Revert a rxe patch breaking icrc calculation
- Static checker warning about unbalanced locking in hns
- Subtle cxgb4 regression from a recent atomic to refcount
conversion"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/iw_cxgb4: Fix refcount underflow while destroying cqs.
RDMA/hns: Fix the double unlock problem of poll_sem
RDMA/rxe: Restore setting tot_len in the IPv4 header
RDMA/rxe: Use the correct size of wqe when processing SRQ
RDMA/cma: Revert INIT-INIT patch
RDMA/mlx5: Delay emptying a cache entry when a new MR is added to it recently
Here is a collection of small fixes:
- A few regression fixes (PCM core fixes, USB-audio fixes)
- Follow up fixes for the USB-audio mixer changes in this cycle
- A long-standing ALSA sequencer race bug fix
- Usual device-specific quirks for HD- and USB-audio
-----BEGIN PGP SIGNATURE-----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=umHe
-----END PGP SIGNATURE-----
Merge tag 'sound-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of small fixes:
- A few regression fixes (PCM core fixes, USB-audio fixes)
- Follow up fixes for the USB-audio mixer changes in this cycle
- A long-standing ALSA sequencer race bug fix
- Usual device-specific quirks for HD- and USB-audio"
* tag 'sound-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: seq: Fix racy deletion of subscriber
ALSA: memalloc: Fix regression with SNDRV_DMA_TYPE_CONTINUOUS
ALSA: pcm - fix mmap capability check for the snd-dummy driver
ALSA: usb-audio: Avoid unnecessary or invalid connector selection at resume
ALSA: hda/realtek: add mic quirk for Acer SF314-42
ALSA: usb-audio: Add registration quirk for JBL Quantum 600
ALSA: hda/realtek: Fix headset mic for Acer SWIFT SF314-56 (ALC256)
ALSA: usb-audio: Fix superfluous autosuspend recovery
ALSA: usb-audio: fix incorrect clock source setting
ALSA: scarlett2: Fix line out/speaker switching notifications
ALSA: scarlett2: Correct channel mute status after mute button pressed
ALSA: scarlett2: Fix Direct Monitor control name for 2i2
ALSA: scarlett2: Fix Mute/Dim/MSD Mode control names
amdgpu:
- Fix potential out-of-bounds read when updating GPUVM mapping
- Renoir powergating fix
- Yellow Carp updates
- 8K fix for navi1x
- Beige Goby updates and new DIDs
- Fix DMUB firmware version output
- EDP fix
- pmops config fix
i915:
- Call i915_globals_exit if pci_register_device fails
- (follow on fix for section mismatch)
- Correct SFC_DONE register offset
kmb:
- DMA fix
- driver date/version macros
vmwgfx:
- Fix I/O memory access on 64-bit systems
-----BEGIN PGP SIGNATURE-----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=petP
-----END PGP SIGNATURE-----
Merge tag 'drm-fixes-2021-08-06' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Regular weekly fixes pull, live from a Brisbane lockdown with kids at
home.
A big bunch of scattered amdgpu fixes, but they are all pretty small,
minor i915 fixes, kmb, and one vmwgfx regression fixes, all pretty
quiet for this time.
amdgpu:
- Fix potential out-of-bounds read when updating GPUVM mapping
- Renoir powergating fix
- Yellow Carp updates
- 8K fix for navi1x
- Beige Goby updates and new DIDs
- Fix DMUB firmware version output
- EDP fix
- pmops config fix
i915:
- Call i915_globals_exit if pci_register_device fails
- (follow on fix for section mismatch)
- Correct SFC_DONE register offset
kmb:
- DMA fix
- driver date/version macros
vmwgfx:
- Fix I/O memory access on 64-bit systems"
* tag 'drm-fixes-2021-08-06' of git://anongit.freedesktop.org/drm/drm:
drm/amdgpu: add DID for beige goby
drm/amdgpu/display: fix DMUB firmware version info
drm/amd/display: workaround for hard hang on HPD on native DP
drm/amd/display: Fix resetting DCN3.1 HW when resuming from S4
drm/amd/display: Increase stutter watermark for dcn303
drm/amd/display: Fix Dynamic bpp issue with 8K30 with Navi 1X
drm/amd/display: Assume LTTPR interop for DCN31+
drm/amdgpu: fix checking pmops when PM_SLEEP is not enabled
drm/amd/pm: update yellow carp pmfw interface version
drm/i915: fix i915_globals_exit() section mismatch error
drm/i915: Call i915_globals_exit() if pci_register_device() fails
drm/i915: Correct SFC_DONE register offset
drm/vmwgfx: Fix a 64bit regression on svga3
drm/amdgpu: fix the doorbell missing when in CGPG issue for renoir.
drm/amdgpu: Fix out-of-bounds read when update mapping
drm/kmb: Define driver date and major/minor version
drm/kmb: Enable LCD DMA for low TVDDCV
Commit b5776e7524 ("ext4: fix potential htree index checksum
corruption) removed a required restart when multiple levels of index
nodes need to be split. Fix this to avoid directory htree corruptions
when using the large_dir feature.
Cc: stable@kernel.org # v5.11
Cc: Благодаренко Артём <artem.blagodarenko@gmail.com>
Fixes: b5776e7524 ("ext4: fix potential htree index checksum corruption)
Reported-by: Denis <denis@voxelsoft.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
State transitions from 1->0->1 and N->2->1 callbacks require RCU
synchronization. Rather than performing the RCU synchronization every
time the state change occurs, which is quite slow when many tracepoints
are registered in batch, instead keep a snapshot of the RCU state on the
most recent transitions which belong to a chain, and conditionally wait
for a grace period on the last transition of the chain if one g.p. has
not elapsed since the last snapshot.
This applies to both RCU and SRCU.
This brings the performance regression caused by commit 231264d692
("Fix: tracepoint: static call function vs data state mismatch") back to
what it was originally.
Before this commit:
# trace-cmd start -e all
# time trace-cmd start -p nop
real 0m10.593s
user 0m0.017s
sys 0m0.259s
After this commit:
# trace-cmd start -e all
# time trace-cmd start -p nop
real 0m0.878s
user 0m0.000s
sys 0m0.103s
Link: https://lkml.kernel.org/r/20210805192954.30688-1-mathieu.desnoyers@efficios.com
Link: https://lore.kernel.org/io-uring/4ebea8f0-58c9-e571-fd30-0ce4f6f09c70@samba.org/
Cc: stable@vger.kernel.org
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Stefan Metzmacher <metze@samba.org>
Fixes: 231264d692 ("Fix: tracepoint: static call function vs data state mismatch")
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
There should be this judgement before we create an io-worker
Fixes: 685fe7feed ("io-wq: eliminate the need for a manager thread")
Signed-off-by: Hao Xu <haoxu@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
There is an acct->nr_worker visit without lock protection. Think about
the case: two callers call io_wqe_wake_worker(), one is the original
context and the other one is an io-worker(by calling
io_wqe_enqueue(wqe, linked)), on two cpus paralelly, this may cause
nr_worker to be larger than max_worker.
Let's fix it by adding lock for it, and let's do nr_workers++ before
create_io_worker. There may be a edge cause that the first caller fails
to create an io-worker, but the second caller doesn't know it and then
quit creating io-worker as well:
say nr_worker = max_worker - 1
cpu 0 cpu 1
io_wqe_wake_worker() io_wqe_wake_worker()
nr_worker < max_worker
nr_worker++
create_io_worker() nr_worker == max_worker
failed return
return
But the chance of this case is very slim.
Fixes: 685fe7feed ("io-wq: eliminate the need for a manager thread")
Signed-off-by: Hao Xu <haoxu@linux.alibaba.com>
[axboe: fix unconditional create_io_worker() call]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
A warning as below may be occasionally triggered in an ADL machine when
these conditions occur:
- Two perf record commands run one by one. Both record a PEBS event.
- Both runs on small cores.
- They have different adaptive PEBS configuration (PEBS_DATA_CFG).
[ ] WARNING: CPU: 4 PID: 9874 at arch/x86/events/intel/ds.c:1743 setup_pebs_adaptive_sample_data+0x55e/0x5b0
[ ] RIP: 0010:setup_pebs_adaptive_sample_data+0x55e/0x5b0
[ ] Call Trace:
[ ] <NMI>
[ ] intel_pmu_drain_pebs_icl+0x48b/0x810
[ ] perf_event_nmi_handler+0x41/0x80
[ ] </NMI>
[ ] __perf_event_task_sched_in+0x2c2/0x3a0
Different from the big core, the small core requires the ACK right
before re-enabling counters in the NMI handler, otherwise a stale PEBS
record may be dumped into the later NMI handler, which trigger the
warning.
Add a new mid_ack flag to track the case. Add all PMI handler bits in
the struct x86_hybrid_pmu to track the bits for different types of
PMUs. Apply mid ACK for the small cores on an Alder Lake machine.
The existing hybrid() macro has a compile error when taking address of
a bit-field variable. Add a new macro hybrid_bit() to get the
bit-field value of a given PMU.
Fixes: f83d2f91d2 ("perf/x86/intel: Add Alder Lake Hybrid support")
Reported-by: Ammy Yi <ammy.yi@intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Tested-by: Ammy Yi <ammy.yi@intel.com>
Link: https://lkml.kernel.org/r/1627997128-57891-1-git-send-email-kan.liang@linux.intel.com
Previous atomic increment/decrement logic expects the atomic count to be
'0' after the final decrement.
Replacing atomic count with refcount does not allow that, as
refcount_dec() considers count of 1 as underflow and triggers a kernel
splat.
Fix the current refcount logic by using the usual pattern of decrementing
the refcount and test if it is '0' on the final deref in
c4iw_destroy_cq(). Use wait_for_completion() instead of wait_event().
Fixes: 7183451f84 ("RDMA/cxgb4: Use refcount_t instead of atomic_t for reference counting")
Link: https://lore.kernel.org/r/1628167412-12114-1-git-send-email-dakshaja@chelsio.com
Signed-off-by: Dakshaja Uppalapati <dakshaja@chelsio.com>
Reviewed-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
DMUB firmware info is printed before it gets initialized.
Correct this order to ensure true value is conveyed.
Signed-off-by: Shirish S <shirish.s@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
[Why]
HPD disable and enable sequences are not mutually exclusive
on Linux. For HPDs that spans over 1s (i.e. HPD low = 1s),
part of the disable sequence (specifically, a request to SMU
to lower refclk) could come right before the call to PHY
enable, causing DMUB to access an unresponsive PHY
and thus a hard hang on the system.
[How]
Disable 48mhz refclk off on native DP.
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why] On S4 resume we also need to fix detection of when to reload DMCUB
firmware because we're currently using the VBIOS version which isn't
compatible with the driver version.
[How] Update the hardware init check for DCN31 since it's the ASIC that
has this issue.
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Jude Shih <jude.shih@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why&How]
Hardware team suggested to use SRExitTime= 35.5us as w/a to prevent
underflow in certain modes.
Reviewed-by: Martin Leung <martin.leung@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Bing Guo <bing.guo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Why:
In DCN2x, HW doesn't automatically divide MASTER_UPDATE_LOCK_DB_X
by the number of pipes ODM Combined.
How:
Set MASTER_UPDATE_LOCK_DB_X to the value that is adjusted by the
number of pipes ODM Combined.
Reviewed-by: Martin Leung <martin.leung@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Bing Guo <bing.guo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[WHY]
For DCN31 onward, LTTPR is to be enabled and set to Transparent by
VBIOS. Driver is to assume that VBIOS has done this without needing to
check the VBIOS interop bit.
[HOW]
Add LTTPR enable and interop VBIOS bits into dc->caps, and force-set the
interop bit to true for DCN31+.
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
'pm_suspend_target_state' is only available when CONFIG_PM_SLEEP
is set/enabled. OTOH, when both SUSPEND and HIBERNATION are not set,
PM_SLEEP is not set, so this variable cannot be used.
../drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c: In function ‘amdgpu_acpi_is_s0ix_active’:
../drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:1046:11: error: ‘pm_suspend_target_state’ undeclared (first use in this function); did you mean ‘__KSYM_pm_suspend_target_state’?
return pm_suspend_target_state == PM_SUSPEND_TO_IDLE;
^~~~~~~~~~~~~~~~~~~~~~~
__KSYM_pm_suspend_target_state
Also use shorter IS_ENABLED(CONFIG_foo) notation for checking the
2 config symbols.
Fixes: 91e273712a ("drm/amdgpu: Check pmops for desired suspend state")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-next@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Correct yellow carp driver-PMFW interface version to v4.
Signed-off-by: Xiaomeng Hou <Xiaomeng.Hou@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Nick Desaulniers