Commit Graph

994552 Commits

Author SHA1 Message Date
Sami Tolvanen
b1a1a1a09b kbuild: lto: postpone objtool
With LTO, LLVM bitcode won't be compiled into native code until
modpost_link, or modfinal for modules. This change postpones calls
to objtool until after these steps, and moves objtool_args to
Makefile.lib, so the arguments can be reused in Makefile.modfinal.

As we didn't have objects to process earlier, we use --duplicate
when processing vmlinux.o. This change also disables unreachable
instruction warnings with LTO to avoid warnings about the int3
padding between functions.

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
2021-02-23 12:46:57 -08:00
Sami Tolvanen
41425ebe20 objtool: Split noinstr validation from --vmlinux
This change adds a --noinstr flag to objtool to allow us to specify
that we're processing vmlinux.o without also enabling noinstr
validation. This is needed to avoid false positives with LTO when we
run objtool on vmlinux.o without CONFIG_DEBUG_ENTRY.

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
2021-02-23 12:46:57 -08:00
Sami Tolvanen
6dafca9780 x86, build: use objtool mcount
Select HAVE_OBJTOOL_MCOUNT if STACK_VALIDATION is selected to use
objtool to generate __mcount_loc sections for dynamic ftrace with
Clang and gcc <5 (later versions of gcc use -mrecord-mcount).

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
2021-02-23 12:46:57 -08:00
Sami Tolvanen
22c8542d7b tracing: add support for objtool mcount
This change adds build support for using objtool to generate
__mcount_loc sections.

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
2021-02-23 12:46:57 -08:00
Sami Tolvanen
0e731dbc18 objtool: Don't autodetect vmlinux.o
With LTO, we run objtool on vmlinux.o, but don't want noinstr
validation. This change requires --vmlinux to be passed to objtool
explicitly.

Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
2021-02-23 12:46:57 -08:00
Sami Tolvanen
18a14575ae objtool: Fix __mcount_loc generation with Clang's assembler
When objtool generates relocations for the __mcount_loc section, it
tries to reference __fentry__ calls by their section symbol offset.
However, this fails with Clang's integrated assembler as it may not
generate section symbols for every section. This patch looks up a
function symbol instead if the section symbol is missing, similarly
to commit e81e072443 ("objtool: Support Clang non-section symbols
in ORC generation").

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
2021-02-23 12:46:56 -08:00
Peter Zijlstra
99d0021569 objtool: Add a pass for generating __mcount_loc
Add the --mcount option for generating __mcount_loc sections
needed for dynamic ftrace. Using this pass requires the kernel to
be compiled with -mfentry and CC_USING_NOP_MCOUNT to be defined
in Makefile.

Link: https://lore.kernel.org/lkml/20200625200235.GQ4781@hirez.programming.kicks-ass.net/
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
[Sami: rebased, dropped config changes, fixed to actually use --mcount,
       and wrote a commit message.]
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
2021-02-23 12:46:56 -08:00
Linus Torvalds
aa8e329172 Merge branch 'for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu
Pull percpu updates from Dennis Zhou:
 "Percpu had a cleanup come in that makes use of the cpu bitmask helpers
  instead of the current iterative approach.

  This clean up then had an adverse interaction when clang's inlining
  sensitivity is changed such that not all sites are inlined resulting
  in modpost being upset with section mismatch due to percpu setup being
  marked __init.

  That was fixed by introducing __flatten to compiler_attributes.h"

* 'for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
  percpu: fix clang modpost section mismatch
  percpu: reduce the number of cpu distance comparisons
2021-02-23 12:33:54 -08:00
Linus Torvalds
5cf0fd591f Kbuild: disable TRIM_UNUSED_KSYMS option
The removal of EXPORT_UNUSED_SYMBOL() in commit 367948220f looks like
(and was sold as) a no-op, but it actually had a rather serious and
subtle side effect: the UNUSED_SYMBOLS option not only enabled the
removed (unused) functionality, it also _disabled_ the TRIM_UNUSED_KSYMS
functionality.

And it turns out that TRIM_UNUSED_KSYMS is a huge time waste, and takes
up a third of the kernel build time for me.  For no actual upside, since
no distro is likely to ever be able to enable it (because they all
support external kernel modules).

Rather than re-enable EXPORT_UNUSED_SYMBOL, this just disables the
TRIM_UNUSED_KSYMS option by marking it broken.  I'm tempted to just
remove the support entirely, but maybe somebody has a use-case and can
fix the behavior of it.

I could have just disabled it for COMPILE_TEST, but it really smells
like the TRIM_UNUSED_KSYMS option is badly done and not really useful,
so this takes the more direct approach - let's see if anybody ever
actually notices or complains.

Cc: Miroslav Benes <mbenes@suse.cz>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jessica Yu <jeyu@kernel.org>
Fixes: 367948220f ("module: remove EXPORT_UNUSED_SYMBOL*")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-02-23 12:21:58 -08:00
Rafael J. Wysocki
833a18d071 Merge branch 'acpica'
* acpica:
  ACPICA: Remove some code duplication from acpi_ev_address_space_dispatch
  ACPICA: Fix race in generic_serial_bus (I2C) and GPIO op_region parameter handling
2021-02-23 19:48:08 +01:00
Rafael J. Wysocki
08c2a406b9 Merge branches 'pm-cpufreq' and 'pm-opp'
* pm-cpufreq:
  cpufreq: Fix typo in kerneldoc comment
  cpufreq: schedutil: Remove update_lock comment from struct sugov_policy definition
  cpufreq: schedutil: Remove needless sg_policy parameter from ignore_dl_rate_limit()
  cpufreq: ACPI: Set cpuinfo.max_freq directly if max boost is known
  cpufreq: qcom-hw: drop devm_xxx() calls from init/exit hooks

* pm-opp:
  opp: Don't skip freq update for different frequency
2021-02-23 19:47:03 +01:00
Linus Torvalds
21a6ab2131 Modules updates for v5.12
Summary of modules changes for the 5.12 merge window:
 
 - Retire EXPORT_UNUSED_SYMBOL() and EXPORT_SYMBOL_GPL_FUTURE(). These export
   types were introduced between 2006 - 2008. All the of the unused symbols have
   been long removed and gpl future symbols were converted to gpl quite a long
   time ago, and I don't believe these export types have been used ever since.
   So, I think it should be safe to retire those export types now. (Christoph Hellwig)
 
 - Refactor and clean up some aged code cruft in the module loader (Christoph Hellwig)
 
 - Build {,module_}kallsyms_on_each_symbol only when livepatching is enabled, as
   it is the only caller (Christoph Hellwig)
 
 - Unexport find_module() and module_mutex and fix the last module
   callers to not rely on these anymore. Make module_mutex internal to
   the module loader. (Christoph Hellwig)
 
 - Harden ELF checks on module load and validate ELF structures before checking
   the module signature (Frank van der Linden)
 
 - Fix undefined symbol warning for clang (Fangrui Song)
 
 - Fix smatch warning (Dan Carpenter)
 
 Signed-off-by: Jessica Yu <jeyu@kernel.org>
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Merge tag 'modules-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

Pull module updates from Jessica Yu:

 - Retire EXPORT_UNUSED_SYMBOL() and EXPORT_SYMBOL_GPL_FUTURE(). These
   export types were introduced between 2006 - 2008. All the of the
   unused symbols have been long removed and gpl future symbols were
   converted to gpl quite a long time ago, and I don't believe these
   export types have been used ever since. So, I think it should be safe
   to retire those export types now (Christoph Hellwig)

 - Refactor and clean up some aged code cruft in the module loader
   (Christoph Hellwig)

 - Build {,module_}kallsyms_on_each_symbol only when livepatching is
   enabled, as it is the only caller (Christoph Hellwig)

 - Unexport find_module() and module_mutex and fix the last module
   callers to not rely on these anymore. Make module_mutex internal to
   the module loader (Christoph Hellwig)

 - Harden ELF checks on module load and validate ELF structures before
   checking the module signature (Frank van der Linden)

 - Fix undefined symbol warning for clang (Fangrui Song)

 - Fix smatch warning (Dan Carpenter)

* tag 'modules-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module: potential uninitialized return in module_kallsyms_on_each_symbol()
  module: remove EXPORT_UNUSED_SYMBOL*
  module: remove EXPORT_SYMBOL_GPL_FUTURE
  module: move struct symsearch to module.c
  module: pass struct find_symbol_args to find_symbol
  module: merge each_symbol_section into find_symbol
  module: remove each_symbol_in_section
  module: mark module_mutex static
  kallsyms: only build {,module_}kallsyms_on_each_symbol when required
  kallsyms: refactor {,module_}kallsyms_on_each_symbol
  module: use RCU to synchronize find_module
  module: unexport find_module and module_mutex
  drm: remove drm_fb_helper_modinit
  powerpc/powernv: remove get_cxl_module
  module: harden ELF info handling
  module: Ignore _GLOBAL_OFFSET_TABLE_ when warning for undefined symbols
2021-02-23 10:15:33 -08:00
Linus Torvalds
74268693e0 Microblaze patches for 5.12-rc1
- Fix DTB alignment
 - Remove < GCC 4 support
 - Remove TRACING_SUPPORT selection
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Merge tag 'microblaze-v5.12' of git://git.monstr.eu/linux-2.6-microblaze

Pull microblaze updates from Michal Simek:

 - Fix DTB alignment

 - Remove code for very old GCC versions

 - Remove TRACING_SUPPORT selection

* tag 'microblaze-v5.12' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Fix built-in DTB alignment to be 8-byte aligned
  microblaze: Remove support for gcc < 4
  microblaze: do not select TRACING_SUPPORT directly
2021-02-23 10:04:03 -08:00
Bob Peterson
17d7768408 gfs2: Don't get stuck with I/O plugged in gfs2_ail1_flush
In gfs2_ail1_flush, we're using I/O plugging to give the block layer a
better chance of merging I/O requests.  If we're too aggressive here, we
can end up waiting on I/O to complete while still plugged.  Fix that in
a way similar to writeback_sb_inodes, except that we can't use
blk_flush_plug because blk_flush_plug_list is not exported.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2021-02-23 19:01:42 +01:00
Linus Torvalds
a56ff24efb objtool updates:
- Make objtool work for big-endian cross compiles
 
  - Make stack tracking via stack pointer memory operations match push/pop
    semantics to prepare for architectures w/o PUSH/POP instructions.
 
  - Add support for analyzing alternatives
 
  - Improve retpoline detection and handling
 
  - Improve assembly code coverage on x86
 
  - Provide support for inlined stack switching
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Merge tag 'objtool-core-2021-02-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool updates from Thomas Gleixner:

 - Make objtool work for big-endian cross compiles

 - Make stack tracking via stack pointer memory operations match
   push/pop semantics to prepare for architectures w/o PUSH/POP
   instructions.

 - Add support for analyzing alternatives

 - Improve retpoline detection and handling

 - Improve assembly code coverage on x86

 - Provide support for inlined stack switching

* tag 'objtool-core-2021-02-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits)
  objtool: Support stack-swizzle
  objtool,x86: Additionally decode: mov %rsp, (%reg)
  x86/unwind/orc: Change REG_SP_INDIRECT
  x86/power: Support objtool validation in hibernate_asm_64.S
  x86/power: Move restore_registers() to top of the file
  x86/power: Annotate indirect branches as safe
  x86/acpi: Support objtool validation in wakeup_64.S
  x86/acpi: Annotate indirect branch as safe
  x86/ftrace: Support objtool vmlinux.o validation in ftrace_64.S
  x86/xen/pvh: Annotate indirect branch as safe
  x86/xen: Support objtool vmlinux.o validation in xen-head.S
  x86/xen: Support objtool validation in xen-asm.S
  objtool: Add xen_start_kernel() to noreturn list
  objtool: Combine UNWIND_HINT_RET_OFFSET and UNWIND_HINT_FUNC
  objtool: Add asm version of STACK_FRAME_NON_STANDARD
  objtool: Assume only ELF functions do sibling calls
  x86/ftrace: Add UNWIND_HINT_FUNC annotation for ftrace_stub
  objtool: Support retpoline jump detection for vmlinux.o
  objtool: Fix ".cold" section suffix check for newer versions of GCC
  objtool: Fix retpoline detection in asm code
  ...
2021-02-23 09:56:13 -08:00
Andreas Gruenbacher
803074ad77 Merge branches 'rgrp-glock-sharing' and 'gfs2-revoke' from https://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git
Merge the resource group glock sharing feature and the revoke accounting rework.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2021-02-23 18:54:22 +01:00
Geert Uytterhoeven
1bff77f41a Input: st1232 - fix NORMAL vs. IDLE state handling
NORMAL (0x0) and IDLE (0x4) are really two different states.  Hence you
cannot check for both using a bitmask, as that checks for IDLE only,
breaking operation for devices that are in NORMAL state.

Fix the wait function to report either state as ready.

Fixes: 6524d8eac2 ("Input: st1232 - add IDLE state as ready condition")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Michael Tretter <m.tretter@pengutronix.de>
Link: https://lore.kernel.org/r/20210223090201.1430542-1-geert+renesas@glider.be
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2021-02-23 09:35:33 -08:00
Linus Torvalds
79db4d2293 clang-lto series for v5.12-rc1
- Clang LTO build infrastructure and arm64-specific enablement (Sami Tolvanen)
 - Recursive build CC_FLAGS_LTO fix (Alexander Lobakin)
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Merge tag 'clang-lto-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull clang LTO updates from Kees Cook:
 "Clang Link Time Optimization.

  This is built on the work done preparing for LTO by arm64 folks,
  tracing folks, etc. This includes the core changes as well as the
  remaining pieces for arm64 (LTO has been the default build method on
  Android for about 3 years now, as it is the prerequisite for the
  Control Flow Integrity protections).

  While x86 LTO enablement is done, it depends on some pending objtool
  clean-ups. It's possible that I'll send a "part 2" pull request for
  LTO that includes x86 support.

  For merge log posterity, and as detailed in commit dc5723b02e
  ("kbuild: add support for Clang LTO"), here is the lt;dr to do an LTO
  build:

        make LLVM=1 LLVM_IAS=1 defconfig
        scripts/config -e LTO_CLANG_THIN
        make LLVM=1 LLVM_IAS=1

  (To do a cross-compile of arm64, add "CROSS_COMPILE=aarch64-linux-gnu-"
  and "ARCH=arm64" to the "make" command lines.)

  Summary:

   - Clang LTO build infrastructure and arm64-specific enablement (Sami
     Tolvanen)

   - Recursive build CC_FLAGS_LTO fix (Alexander Lobakin)"

* tag 'clang-lto-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  kbuild: prevent CC_FLAGS_LTO self-bloating on recursive rebuilds
  arm64: allow LTO to be selected
  arm64: disable recordmcount with DYNAMIC_FTRACE_WITH_REGS
  arm64: vdso: disable LTO
  drivers/misc/lkdtm: disable LTO for rodata.o
  efi/libstub: disable LTO
  scripts/mod: disable LTO for empty.c
  modpost: lto: strip .lto from module names
  PCI: Fix PREL32 relocations for LTO
  init: lto: fix PREL32 relocations
  init: lto: ensure initcall ordering
  kbuild: lto: add a default list of used symbols
  kbuild: lto: merge module sections
  kbuild: lto: limit inlining
  kbuild: lto: fix module versioning
  kbuild: add support for Clang LTO
  tracing: move function tracer options to Kconfig
2021-02-23 09:28:51 -08:00
Jiri Kosina
00522de2f9 Merge branch 'for-5.12/uclogic' into for-linus
- Trust Panora support improvements from Cristian Klein
2021-02-23 11:43:27 +01:00
Jiri Kosina
c35f31fc06 Merge branch 'for-5.12/sony' into for-linus
- tilt support on Sony Guitar Hero devices from Sanjay Govind
2021-02-23 11:43:15 +01:00
Jiri Kosina
e2adf27eb4 Merge branch 'for-5.12/playstation-v2' into for-linus
- Playstation DualSense support from Roderick Colenbrander
2021-02-23 11:43:01 +01:00
Jiri Kosina
31d31fa52c Merge branch 'for-5.12/multitouch' into for-linus
- hid-multitouch devices should be put into high-latency mode when
  suspended in order to be in line with Windows Precision Touchpad
  guidelines. From Blaž Hrastnik.
2021-02-23 11:36:19 +01:00
Jiri Kosina
fc590a35d5 Merge branch 'for-5.12/logitech' into for-linus
- support for "Unified Battery (1004) feature" from Filipe Laíns
2021-02-23 11:35:50 +01:00
Jiri Kosina
7eb275f92d Merge branch 'for-5.12/intel-ish' into for-linus
- power management improvements for intel-ish driver from Zhang Lixu
2021-02-23 11:35:07 +01:00
Jiri Kosina
27b730e088 Merge branch 'for-5.12/i2c-hid' into for-linus
- ACPI and OF support made more generic / decoupled. From Douglas Anderson
- support for Goodix devices from Douglas Anderson
2021-02-23 11:33:54 +01:00
Jiri Kosina
d6310078d9 Merge branch 'for-5.12/google' into for-linus
- User experience improvements for hid-google from Nicolas Boichat
2021-02-23 11:33:13 +01:00
Jiri Kosina
f8dd50e097 Merge branch 'for-5.12/doc' into for-linus
- HID documentation fixes from Randy Dunlap
2021-02-23 11:32:40 +01:00
Jiri Kosina
fcd89e77db Merge branch 'for-5.12/chicony' into for-linus
- KEY_RFKILL support for Chicony devices from Jian-Hong Pan
2021-02-23 11:31:58 +01:00
Jiri Kosina
760f7e7b95 Merge branch 'for-5.12/core' into for-linus
- improved handling of generic HID keyboard (no more splitting system
  and consumer controls away), in order to make it easier for userspace
  to figure out the details of the device easier. From Dmitry Torokhov.

- report data sanitization fixes from Will McVicker and Randy Dunlap
2021-02-23 11:30:01 +01:00
Dmitry Torokhov
cbecf716ca Merge branch 'next' into for-linus
Prepare input updates for 5.12 merge window.
2021-02-22 21:35:15 -08:00
Jiapeng Chong
4c47097f85 Input: aiptek - convert sysfs sprintf/snprintf family to sysfs_emit
Fix the following coccicheck warning:

./drivers/input/tablet/aiptek.c:1629:8-16: WARNING: use scnprintf or
sprintf.

Reported-by: Abaci Robot<abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/1612419191-1078-1-git-send-email-jiapeng.chong@linux.alibaba.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2021-02-22 21:22:50 -08:00
Bhaskar Chowdhury
2896a27fdc Input: alps - fix spelling of "positive"
s/postive/positive/

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Pali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20210222075439.32201-1-unixbhaskar@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2021-02-22 21:22:47 -08:00
Philip Chen
497c318303 ARM: dts: cros-ec-keyboard: Use keymap macros
The common cros-ec keymap has been defined as macros. This patch uses
the macros to simply linux,keymap in cros-ec-keyboard.dtsi file.

This patch also creates an alias for keyboard-controller to make it
easier to override the keymap in board-specific dts later.

Signed-off-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20210115143555.v6.2.I9ec9c3c61eded22a5f7fbff838d23fc95ec7cfe0@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2021-02-22 21:22:34 -08:00
Philip Chen
3d283f0b07 dt-bindings: input: Fix the keymap for LOCK key
Decouple LOCK from F13 and directly map the LOCK key (KSI3/KSO9) to
KEY_SLEEP action key code.

Signed-off-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210115143555.v6.3.I96134907488f41f358d03f3c1b08194f9547e670@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2021-02-22 21:22:33 -08:00
Philip Chen
faf7f3fdd1 dt-bindings: input: Create macros for cros-ec keymap
In Chrome OS, the keyboard matrix can be split to two groups:

The keymap for the top row keys can be customized based on OEM
preference, while the keymap for the other keys is generic/fixed
across boards.

This patch creates marcos for the keymaps of these two groups, making
it easier to reuse the generic portion of keymap when we override the
keymap in the board-specific dts for custom top row design.

Signed-off-by: Philip Chen <philipchen@chromium.org>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20210115143555.v6.1.Iaa8a60cf2ed4b7ad5e2fbb4ad76a1c600ee36113@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2021-02-22 21:22:32 -08:00
Philip Chen
820c872795 Input: cros-ec-keyb - expose function row physical map to userspace
The top-row keys in a keyboard usually have dual functionalities.
E.g. A function key "F1" is also an action key "Browser back".

Therefore, when an application receives an action key code from
a top-row key press, the application needs to know how to correlate
the action key code with the function key code and do the conversion
whenever necessary.

Since the userpace already knows the key scanlines (row/column)
associated with a received key code. Essentially, the userspace only
needs a mapping between the key row/column and the matching physical
location in the top row.

So, enhance the cros-ec-keyb driver to create such a mapping
and expose it to userspace in the form of a function_row_physmap
attribute. The attribute would be a space separated ordered list of
row/column codes for the keys in the function row, in a left-to-right
order.

The attribute will only be present when the device has a custom design
for the top-row keys.

Signed-off-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20210115122412.v7.2.I6542d7d9d0b246e7079bb16b41e697b2ac4b4e39@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2021-02-22 21:22:15 -08:00
Philip Chen
311a27da62 dt-bindings: input: cros-ec-keyb: Add a new property describing top row
Add a new property `function-row-physmap` to the
device tree for the custom keyboard top row design.

The property describes the rows/columns of the top row keys
from left to right.

Signed-off-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210115122412.v7.1.I025fb861cd5fa0ef5286b7dce514728e9df7ae74@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2021-02-22 21:22:13 -08:00
Dmitry Torokhov
415e915fdf Linux 5.11
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Merge tag 'v5.11' into next

Merge with mainline to get latest APIs and device tree bindings.
2021-02-22 21:21:03 -08:00
Linus Torvalds
3b9cdafb53 This is the bulk of pin control changes for the v5.12 kernel.
This time a calm set with no core changes.
 
 New drivers/subdrivers:
 
 - Renesas R8A7790A0 pin controller.
 
 - Allwinner H616 and H616-R pin controllers.
 
 - Qualcomm SM8350 and SC8180x pin controllers.
 
 Improvements:
 
 - Redo the DT bindings for Ralink RT2880.
 
 - A common Qualcomm TLMM DT binding in YAML.
 
 - Delete the unused drivers for U300, COH901, Sirf Atlas, and ZTE ZX.
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Merge tag 'pinctrl-v5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "This is the bulk of pin control changes for the v5.12 kernel.

  This time a calm set with no core changes.

  New drivers/subdrivers:

   - Renesas R8A7790A0 pin controller.

   - Allwinner H616 and H616-R pin controllers.

   - Qualcomm SM8350 and SC8180x pin controllers.

  Improvements:

   - Redo the DT bindings for Ralink RT2880.

   - A common Qualcomm TLMM DT binding in YAML.

   - Delete the unused drivers for U300, COH901, Sirf Atlas, and ZTE ZX"

* tag 'pinctrl-v5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (71 commits)
  pinctrl: mediatek: Fix trigger type setting follow for unexpected interrupt
  dt-bindings: pinctrl: Group tuples in pin control properties
  pinctrl: nuvoton: npcm7xx: Fix alignment of table header comment
  pinctrl: at91-pio4: fix "Prefer 'unsigned int' to bare use of 'unsigned'"
  pinctrl: at91-pio4: add support for slew-rate
  dt-bindings: pinctrl: at91-pio4: add slew-rate
  pinctrl: actions: Add depends on || COMPILE_TEST
  pinctrl: single: set function name when adding function
  pinctrl: qcom: Add sc8180x TLMM driver
  dt-bindings: pinctrl: qcom: Add sc8180x binding
  dt-bindings: pinctrl: qcom: Define common TLMM binding
  pinctrl: qcom: Add SM8350 pinctrl driver
  dt-bindings: pinctrl: qcom: Add SM8350 pinctrl bindings
  pinctrl: samsung: use raw_spinlock for s3c64xx
  dt-bindings: mediatek: mt8192: Fix dt_binding_check warning
  pinctrl: qcom: spmi-mpp: Add PM8019 compatible
  pinctrl: pinmux: add function selector to pinmux-functions
  pinctrl: samsung: use raw_spinlock for locking
  pinctrl: clarify #pinctrl-cells for pinctrl-single,pins
  pinctrl: actions: Add the platform dependency to drivers
  ...
2021-02-22 18:39:11 -08:00
Linus Torvalds
f81f213850 Pull request for IPMI for 5.12
Only one change in this pull, but it's required for other things, so it
 needs to go in.
 
 -corey
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Merge tag 'for-linus-5.12-1' of git://github.com/cminyard/linux-ipmi

Pull IPMI update from Corey Minyard:
 "Only one change, but it's required for other things, so it needs to go
  in"

* tag 'for-linus-5.12-1' of git://github.com/cminyard/linux-ipmi:
  ipmi: remove open coded version of SMBus block write
2021-02-22 18:35:18 -08:00
Linus Torvalds
e913a8cdc2 Fixes around VM_FPNMAP and follow_pfn
- replace mm/frame_vector.c by get_user_pages in misc/habana and
   drm/exynos drivers, then move that into media as it's sole user
 - close race in generic_access_phys
 - s390 pci ioctl fix of this series landed in 5.11 already
 - properly revoke iomem mappings (/dev/mem, pci files)
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Merge tag 'topic/iomem-mmap-vs-gup-2021-02-22' of git://anongit.freedesktop.org/drm/drm

Pull follow_pfn() updates from Daniel Vetter:
 "Fixes around VM_FPNMAP and follow_pfn:

   - replace mm/frame_vector.c by get_user_pages in misc/habana and
     drm/exynos drivers, then move that into media as it's sole user

   - close race in generic_access_phys

   - s390 pci ioctl fix of this series landed in 5.11 already

   - properly revoke iomem mappings (/dev/mem, pci files)"

* tag 'topic/iomem-mmap-vs-gup-2021-02-22' of git://anongit.freedesktop.org/drm/drm:
  PCI: Revoke mappings like devmem
  PCI: Also set up legacy files only after sysfs init
  sysfs: Support zapping of binary attr mmaps
  resource: Move devmem revoke code to resource framework
  /dev/mem: Only set filp->f_mapping
  PCI: Obey iomem restrictions for procfs mmap
  mm: Close race in generic_access_phys
  media: videobuf2: Move frame_vector into media subsystem
  mm/frame-vector: Use FOLL_LONGTERM
  misc/habana: Use FOLL_LONGTERM for userptr
  misc/habana: Stop using frame_vector helpers
  drm/exynos: Use FOLL_LONGTERM for g2d cmdlists
  drm/exynos: Stop using frame_vector helpers
2021-02-22 17:45:02 -08:00
Linus Torvalds
4b5f9254e4 kconfig for kcmp syscall
drm userspaces uses this, systemd uses this, makes sense to pull it
 out from the checkpoint-restore bundle. Kees reviewed this from
 security pov and is happy with the final version.
 
 LWN coverage: https://lwn.net/Articles/845448/
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Merge tag 'topic/kcmp-kconfig-2021-02-22' of git://anongit.freedesktop.org/drm/drm

Pull kcmp kconfig update from Daniel Vetter:
 "Make the kcmp syscall available independently of checkpoint/restore.

  drm userspaces uses this, systemd uses this, so makes sense to pull it
  out from the checkpoint-restore bundle.

  Kees reviewed this from security pov and is happy with the final
  version"

Link: https://lwn.net/Articles/845448/

* tag 'topic/kcmp-kconfig-2021-02-22' of git://anongit.freedesktop.org/drm/drm:
  kcmp: Support selection of SYS_kcmp without CHECKPOINT_RESTORE
2021-02-22 17:15:30 -08:00
Linus Torvalds
7b0b78df9c Merge branch 'userns-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull user namespace update from Eric Biederman:
 "There are several pieces of active development, but only a single
  change made it through the gauntlet to be ready for v5.12. That change
  is tightening up the semantics of the v3 capabilities xattr. It is
  just short of being a bug-fix/security issue as no user space is known
  to even generate the problem case"

* 'userns-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  capabilities: Don't allow writing ambiguous v3 file capabilities
2021-02-22 17:13:33 -08:00
Linus Torvalds
ac9e806c9c Merge branch 'for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull qorkqueue updates from Tejun Heo:
 "Tracepoint and comment updates only"

* 'for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: Use %s instead of function name
  workqueue: tracing the name of the workqueue instead of it's address
  workqueue: fix annotation for WQ_SYSFS
2021-02-22 17:06:54 -08:00
Linus Torvalds
4b3bd22b12 Merge branch 'for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo:
 "Nothing interesting. Just two minor patches"

* 'for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cpuset: fix typos in comments
  cgroup: cgroup.{procs,threads} factor out common parts
2021-02-22 16:50:56 -08:00
Linus Torvalds
b12b472496 powerpc updates for 5.12
A large series adding wrappers for our interrupt handlers, so that irq/nmi/user
 tracking can be isolated in the wrappers rather than spread in each handler.
 
 Conversion of the 32-bit syscall handling into C.
 
 A series from Nick to streamline our TLB flushing when using the Radix MMU.
 
 Switch to using queued spinlocks by default for 64-bit server CPUs.
 
 A rework of our PCI probing so that it happens later in boot, when more generic
 infrastructure is available.
 
 Two small fixes to allow 32-bit little-endian processes to run on 64-bit
 kernels.
 
 Other smaller features, fixes & cleanups.
 
 Thanks to:
   Alexey Kardashevskiy, Ananth N Mavinakayanahalli, Aneesh Kumar K.V, Athira
   Rajeev, Bhaskar Chowdhury, Cédric Le Goater, Chengyang Fan, Christophe Leroy,
   Christopher M. Riedl, Fabiano Rosas, Florian Fainelli, Frederic Barrat, Ganesh
   Goudar, Hari Bathini, Jiapeng Chong, Joseph J Allen, Kajol Jain, Markus
   Elfring, Michal Suchanek, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Oliver
   O'Halloran, Pingfan Liu, Po-Hsu Lin, Qian Cai, Ram Pai, Randy Dunlap, Sandipan
   Das, Stephen Rothwell, Tyrel Datwyler, Will Springer, Yury Norov, Zheng
   Yongjun.
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Merge tag 'powerpc-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - A large series adding wrappers for our interrupt handlers, so that
   irq/nmi/user tracking can be isolated in the wrappers rather than
   spread in each handler.

 - Conversion of the 32-bit syscall handling into C.

 - A series from Nick to streamline our TLB flushing when using the
   Radix MMU.

 - Switch to using queued spinlocks by default for 64-bit server CPUs.

 - A rework of our PCI probing so that it happens later in boot, when
   more generic infrastructure is available.

 - Two small fixes to allow 32-bit little-endian processes to run on
   64-bit kernels.

 - Other smaller features, fixes & cleanups.

Thanks to: Alexey Kardashevskiy, Ananth N Mavinakayanahalli, Aneesh
Kumar K.V, Athira Rajeev, Bhaskar Chowdhury, Cédric Le Goater, Chengyang
Fan, Christophe Leroy, Christopher M. Riedl, Fabiano Rosas, Florian
Fainelli, Frederic Barrat, Ganesh Goudar, Hari Bathini, Jiapeng Chong,
Joseph J Allen, Kajol Jain, Markus Elfring, Michal Suchanek, Nathan
Lynch, Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran, Pingfan Liu,
Po-Hsu Lin, Qian Cai, Ram Pai, Randy Dunlap, Sandipan Das, Stephen
Rothwell, Tyrel Datwyler, Will Springer, Yury Norov, and Zheng Yongjun.

* tag 'powerpc-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (188 commits)
  powerpc/perf: Adds support for programming of Thresholding in P10
  powerpc/pci: Remove unimplemented prototypes
  powerpc/uaccess: Merge raw_copy_to_user_allowed() into raw_copy_to_user()
  powerpc/uaccess: Merge __put_user_size_allowed() into __put_user_size()
  powerpc/uaccess: get rid of small constant size cases in raw_copy_{to,from}_user()
  powerpc/64: Fix stack trace not displaying final frame
  powerpc/time: Remove get_tbl()
  powerpc/time: Avoid using get_tbl()
  spi: mpc52xx: Avoid using get_tbl()
  powerpc/syscall: Avoid storing 'current' in another pointer
  powerpc/32: Handle bookE debugging in C in syscall entry/exit
  powerpc/syscall: Do not check unsupported scv vector on PPC32
  powerpc/32: Remove the counter in global_dbcr0
  powerpc/32: Remove verification of MSR_PR on syscall in the ASM entry
  powerpc/syscall: implement system call entry/exit logic in C for PPC32
  powerpc/32: Always save non volatile GPRs at syscall entry
  powerpc/syscall: Change condition to check MSR_RI
  powerpc/syscall: Save r3 in regs->orig_r3
  powerpc/syscall: Use is_compat_task()
  powerpc/syscall: Make interrupt.c buildable on PPC32
  ...
2021-02-22 14:34:00 -08:00
Linus Torvalds
6ff6f86bc4 ARM updates for 5.12-rc1:
- Generalise byte swapping assembly
 - Update debug addresses for STI
 - Validate start of physical memory with DTB
 - Do not clear SCTLR.nTLSMD in decompressor
 - amba/locomo/sa1111 devices remove method return type is void
 - address markers for KASAN in page table dump
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM updates from Russell King:

 - Generalise byte swapping assembly

 - Update debug addresses for STI

 - Validate start of physical memory with DTB

 - Do not clear SCTLR.nTLSMD in decompressor

 - amba/locomo/sa1111 devices remove method return type is void

 - address markers for KASAN in page table dump

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 9065/1: OABI compat: fix build when EPOLL is not enabled
  ARM: 9055/1: mailbox: arm_mhuv2: make remove callback return void
  amba: Make use of bus_type functions
  amba: Make the remove callback return void
  vfio: platform: simplify device removal
  amba: reorder functions
  amba: Fix resource leak for drivers without .remove
  ARM: 9054/1: arch/arm/mm/mmu.c: Remove duplicate header
  ARM: 9053/1: arm/mm/ptdump:Add address markers for KASAN regions
  ARM: 9051/1: vdso: remove unneded extra-y addition
  ARM: 9050/1: Kconfig: Select ARCH_HAVE_NMI_SAFE_CMPXCHG where possible
  ARM: 9049/1: locomo: make locomo bus's remove callback return void
  ARM: 9048/1: sa1111: make sa1111 bus's remove callback return void
  ARM: 9047/1: smp: remove unused variable
  ARM: 9046/1: decompressor: Do not clear SCTLR.nTLSMD for ARMv7+ cores
  ARM: 9045/1: uncompress: Validate start of physical memory against passed DTB
  ARM: 9042/1: debug: no uncompress debugging while semihosting
  ARM: 9041/1: sti LL_UART: add STiH418 SBC UART0 support
  ARM: 9040/1: use DEBUG_UART_PHYS and DEBUG_UART_VIRT for sti LL_UART
  ARM: 9039/1: assembler: generalize byte swapping macro into rev_l
2021-02-22 14:27:07 -08:00
Linus Torvalds
4aa364443d A small set of clockevent fixes which fell through the cracks
before the 5.11 release:
 
    - Ensure a clock is enabled on sh_cmt
    - Trivial compile fail and compile warning fixes
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Merge tag 'timers-urgent-2021-02-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer fixes from Thomas Gleixner:
 "A small set of clockevent fixes which fell through the cracks before
  the 5.11 release:

   - Ensure a clock is enabled on sh_cmt

   - Trivial compile fail and compile warning fixes"

* tag 'timers-urgent-2021-02-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource/drivers/mxs_timer: Add missing semicolon when DEBUG is defined
  clocksource/drivers/sh_cmt: Make sure channel clock supply is enabled
  clocksource/drivers/ixp4xx: Select TIMER_OF when needed
2021-02-22 14:11:36 -08:00
Linus Torvalds
c958423470 Tracing updates for 5.12
- Update to the way irqs and preemption is tracked via the trace event PC field
 
  - Fix handling of unregistering event failing due to allocate memory.
    This is only triggered by failure injection, as it is pretty much guaranteed
    to have less than a page allocation succeed.
 
  - Do not show the useless "filter" or "enable" files for the "ftrace" trace
    system, as they have no effect on doing anything.
 
  - Add a warning if kprobes are registered more than once.
 
  - Synthetic events now have their fields parsed by semicolons.
    Old formats without semicolons will still work, but new features will
    require them.
 
  - New option to allow trace events to show %p without hashing in trace file.
    The trace file can only be read by root, and reading the raw event buffer
    did not have any pointers hashed, so this does not expose anything new.
 
  - New directory in tools called tools/tracing, where a new tool that reads
    sequential latency reports from the ftrace latency tracers.
 
  - Other minor fixes and cleanups.
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Merge tag 'trace-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing updates from Steven Rostedt:

 - Update to the way irqs and preemption is tracked via the trace event
   PC field

 - Fix handling of unregistering event failing due to allocate memory.
   This is only triggered by failure injection, as it is pretty much
   guaranteed to have less than a page allocation succeed.

 - Do not show the useless "filter" or "enable" files for the "ftrace"
   trace system, as they have no effect on doing anything.

 - Add a warning if kprobes are registered more than once.

 - Synthetic events now have their fields parsed by semicolons. Old
   formats without semicolons will still work, but new features will
   require them.

 - New option to allow trace events to show %p without hashing in trace
   file. The trace file can only be read by root, and reading the raw
   event buffer did not have any pointers hashed, so this does not
   expose anything new.

 - New directory in tools called tools/tracing, where a new tool that
   reads sequential latency reports from the ftrace latency tracers.

 - Other minor fixes and cleanups.

* tag 'trace-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (33 commits)
  kprobes: Fix to delay the kprobes jump optimization
  tracing/tools: Add the latency-collector to tools directory
  tracing: Make hash-ptr option default
  tracing: Add ptr-hash option to show the hashed pointer value
  tracing: Update the stage 3 of trace event macro comment
  tracing: Show real address for trace event arguments
  selftests/ftrace: Add '!event' synthetic event syntax check
  selftests/ftrace: Update synthetic event syntax errors
  tracing: Add a backward-compatibility check for synthetic event creation
  tracing: Update synth command errors
  tracing: Rework synthetic event command parsing
  tracing/dynevent: Delegate parsing to create function
  kprobes: Warn if the kprobe is reregistered
  ftrace: Remove unused ftrace_force_update()
  tracepoints: Code clean up
  tracepoints: Do not punish non static call users
  tracepoints: Remove unnecessary "data_args" macro parameter
  tracing: Do not create "enable" or "filter" files for ftrace event subsystem
  kernel: trace: preemptirq_delay_test: add cpu affinity
  tracepoint: Do not fail unregistering a probe due to memory failure
  ...
2021-02-22 14:07:15 -08:00
Linus Torvalds
3a36281a17 New features:
- Support instruction latency in 'perf report', with both memory latency
   (weight) and instruction latency information, users can locate expensive load
   instructions and understand time spent in different stages.
 
 - Extend 'perf c2c' to display the number of loads which were blocked by data
   or address conflict.
 
 - Add 'perf stat' support for L2 topdown events in systems such as Intel's
   Sapphire rapids server.
 
 - Add support for PERF_SAMPLE_CODE_PAGE_SIZE in various tools, as a sort key, for instance:
 
     perf report --stdio --sort=comm,symbol,code_page_size
 
 - New 'perf daemon' command to run long running sessions while providing a way to control
   the enablement of events without restarting a traditional 'perf record' session.
 
 - Enable counting events for BPF programs in 'perf stat' just like for other
   targets (tid, cgroup, cpu, etc), e.g.:
 
       # perf stat -e ref-cycles,cycles -b 254 -I 1000
          1.487903822            115,200      ref-cycles
          1.487903822             86,012      cycles
          2.489147029             80,560      ref-cycles
          2.489147029             73,784      cycles
       ^C#
 
   The example above counts 'cycles' and 'ref-cycles' of BPF program of id 254.
   It is similar to bpftool-prog-profile command, but more flexible.
 
 - Support the new layout for PERF_RECORD_MMAP2 to carry the DSO build-id using infrastructure
   generalised from the eBPF subsystem, removing the need for traversing the perf.data file
   to collect build-ids at the end of 'perf record' sessions and helping with long running
   sessions where binaries can get replaced in updates, leading to possible mis-resolution
   of symbols.
 
 - Support filtering by hex address in 'perf script'.
 
 - Support DSO filter in 'perf script', like in other perf tools.
 
 - Add namespaces support to 'perf inject'
 
 - Add support for SDT (Dtrace Style Markers) events on ARM64.
 
 perf record:
 
 - Fix handling of eventfd() when draining a buffer in 'perf record'.
 
 - Improvements to the generation of metadata events for pre-existing threads (mmaps, comm, etc),
   speeding up the work done at the start of system wide or per CPU 'perf record' sessions.
 
 Hardware tracing:
 
 - Initial support for tracing KVM with Intel PT.
 
 - Intel PT fixes for IPC
 
 - Support Intel PT PSB (synchronization packets) events.
 
 - Automatically group aux-output events to overcome --filter syntax.
 
 - Enable PERF_SAMPLE_DATA_SRC on ARMs SPE.
 
 - Update ARM's CoreSight hardware tracing OpenCSD library to v1.0.0.
 
 perf annotate TUI:
 
 - Fix handling of 'k' ("show line number") hotkey
 
 - Fix jump parsing for C++ code.
 
 perf probe:
 
 - Add protection to avoid endless loop.
 
 cgroups:
 
 - Avoid reading cgroup mountpoint multiple times, caching it.
 
 - Fix handling of cgroup v1/v2 in mixed hierarchy.
 
 Symbol resolving:
 
 - Add OCaml symbol demangling.
 
 - Further fixes for handling PE executables when using perf with Wine and .exe/.dll files.
 
 - Fix 'perf unwind' DSO handling.
 
 - Resolve symbols against debug file first, to deal with artifacts related to LTO.
 
 - Fix gap between kernel end and module start on powerpc.
 
 Reporting tools:
 
 - The DSO filter shouldn't show samples in unresolved maps.
 
 - Improve debuginfod support in various tools.
 
 build ids:
 
 - Fix 16-byte build ids in 'perf buildid-cache', add a 'perf test' entry for that case.
 
 perf test:
 
 - Support for PERF_SAMPLE_WEIGHT_STRUCT.
 
 - Add test case for PERF_SAMPLE_CODE_PAGE_SIZE.
 
 - Shell based tests for 'perf daemon's commands ('start', 'stop, 'reconfig', 'list', etc).
 
 - ARM cs-etm 'perf test' fixes.
 
 - Add parse-metric memory bandwidth testcase.
 
 Compiler related:
 
 - Fix 'perf probe' kretprobe issue caused by gcc 11 bug when used with -fpatchable-function-entry.
 
 - Fix ARM64 build with gcc 11's -Wformat-overflow.
 
 - Fix unaligned access in sample parsing test.
 
 - Fix printf conversion specifier for IP addresses on arm64, s390 and powerpc.
 
 Arch specific:
 
 - Support exposing Performance Monitor Counter SPRs as part of extended regs on powerpc.
 
 - Add JSON 'perf stat' metrics for ARM64's imx8mp, imx8mq and imx8mn DDR, fix imx8mm ones.
 
 - Fix common and uarch events for ARM64's A76 and Ampere eMag
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-for-v5.12-2020-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tool updates from Arnaldo Carvalho de Melo:
 "New features:

   - Support instruction latency in 'perf report', with both memory
     latency (weight) and instruction latency information, users can
     locate expensive load instructions and understand time spent in
     different stages.

   - Extend 'perf c2c' to display the number of loads which were blocked
     by data or address conflict.

   - Add 'perf stat' support for L2 topdown events in systems such as
     Intel's Sapphire rapids server.

   - Add support for PERF_SAMPLE_CODE_PAGE_SIZE in various tools, as a
     sort key, for instance:

        perf report --stdio --sort=comm,symbol,code_page_size

   - New 'perf daemon' command to run long running sessions while
     providing a way to control the enablement of events without
     restarting a traditional 'perf record' session.

   - Enable counting events for BPF programs in 'perf stat' just like
     for other targets (tid, cgroup, cpu, etc), e.g.:

        # perf stat -e ref-cycles,cycles -b 254 -I 1000
           1.487903822            115,200      ref-cycles
           1.487903822             86,012      cycles
           2.489147029             80,560      ref-cycles
           2.489147029             73,784      cycles
        ^C

     The example above counts 'cycles' and 'ref-cycles' of BPF program
     of id 254. It is similar to bpftool-prog-profile command, but more
     flexible.

   - Support the new layout for PERF_RECORD_MMAP2 to carry the DSO
     build-id using infrastructure generalised from the eBPF subsystem,
     removing the need for traversing the perf.data file to collect
     build-ids at the end of 'perf record' sessions and helping with
     long running sessions where binaries can get replaced in updates,
     leading to possible mis-resolution of symbols.

   - Support filtering by hex address in 'perf script'.

   - Support DSO filter in 'perf script', like in other perf tools.

   - Add namespaces support to 'perf inject'

   - Add support for SDT (Dtrace Style Markers) events on ARM64.

  perf record:

   - Fix handling of eventfd() when draining a buffer in 'perf record'.

   - Improvements to the generation of metadata events for pre-existing
     threads (mmaps, comm, etc), speeding up the work done at the start
     of system wide or per CPU 'perf record' sessions.

  Hardware tracing:

   - Initial support for tracing KVM with Intel PT.

   - Intel PT fixes for IPC

   - Support Intel PT PSB (synchronization packets) events.

   - Automatically group aux-output events to overcome --filter syntax.

   - Enable PERF_SAMPLE_DATA_SRC on ARMs SPE.

   - Update ARM's CoreSight hardware tracing OpenCSD library to v1.0.0.

  perf annotate TUI:

   - Fix handling of 'k' ("show line number") hotkey

   - Fix jump parsing for C++ code.

  perf probe:

   - Add protection to avoid endless loop.

  cgroups:

   - Avoid reading cgroup mountpoint multiple times, caching it.

   - Fix handling of cgroup v1/v2 in mixed hierarchy.

  Symbol resolving:

   - Add OCaml symbol demangling.

   - Further fixes for handling PE executables when using perf with Wine
     and .exe/.dll files.

   - Fix 'perf unwind' DSO handling.

   - Resolve symbols against debug file first, to deal with artifacts
     related to LTO.

   - Fix gap between kernel end and module start on powerpc.

  Reporting tools:

   - The DSO filter shouldn't show samples in unresolved maps.

   - Improve debuginfod support in various tools.

  build ids:

   - Fix 16-byte build ids in 'perf buildid-cache', add a 'perf test'
     entry for that case.

  perf test:

   - Support for PERF_SAMPLE_WEIGHT_STRUCT.

   - Add test case for PERF_SAMPLE_CODE_PAGE_SIZE.

   - Shell based tests for 'perf daemon's commands ('start', 'stop,
     'reconfig', 'list', etc).

   - ARM cs-etm 'perf test' fixes.

   - Add parse-metric memory bandwidth testcase.

  Compiler related:

   - Fix 'perf probe' kretprobe issue caused by gcc 11 bug when used
     with -fpatchable-function-entry.

   - Fix ARM64 build with gcc 11's -Wformat-overflow.

   - Fix unaligned access in sample parsing test.

   - Fix printf conversion specifier for IP addresses on arm64, s390 and
     powerpc.

  Arch specific:

   - Support exposing Performance Monitor Counter SPRs as part of
     extended regs on powerpc.

   - Add JSON 'perf stat' metrics for ARM64's imx8mp, imx8mq and imx8mn
     DDR, fix imx8mm ones.

   - Fix common and uarch events for ARM64's A76 and Ampere eMag"

* tag 'perf-tools-for-v5.12-2020-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (148 commits)
  perf buildid-cache: Don't skip 16-byte build-ids
  perf buildid-cache: Add test for 16-byte build-id
  perf symbol: Remove redundant libbfd checks
  perf test: Output the sub testing result in cs-etm
  perf test: Suppress logs in cs-etm testing
  perf tools: Fix arm64 build error with gcc-11
  perf intel-pt: Add documentation for tracing virtual machines
  perf intel-pt: Split VM-Entry and VM-Exit branches
  perf intel-pt: Adjust sample flags for VM-Exit
  perf intel-pt: Allow for a guest kernel address filter
  perf intel-pt: Support decoding of guest kernel
  perf machine: Factor out machine__idle_thread()
  perf machine: Factor out machines__find_guest()
  perf intel-pt: Amend decoder to track the NR flag
  perf intel-pt: Retain the last PIP packet payload as is
  perf intel_pt: Add vmlaunch and vmresume as branches
  perf script: Add branch types for VM-Entry and VM-Exit
  perf auxtrace: Automatically group aux-output events
  perf test: Fix unaligned access in sample parsing test
  perf tools: Support arch specific PERF_SAMPLE_WEIGHT_STRUCT processing
  ...
2021-02-22 13:59:43 -08:00