linux.git/tools/include/uapi/linux/perf_event.h, branch v6.18.21

perf/uapi: Clean up a bit

2025-05-22T09:03:41+00:00

When applying a recent commit to the 
header I noticed that we have accumulated quite a bit of
historic noise in this header, so do a bit of spring cleaning:

 - Define bitfields in a vertically aligned fashion, like
   perf_event_mmap_page::capabilities already does. This
   makes it easier to see the distribution and sizing of
   bits within a word, at a glance. The following is much
   more readable:

			__u64	cap_bit0		: 1,
				cap_bit0_is_deprecated	: 1,
				cap_user_rdpmc		: 1,
				cap_user_time		: 1,
				cap_user_time_zero	: 1,
				cap_user_time_short	: 1,
				cap_____res		: 58;

   Than:

			__u64	cap_bit0:1,
				cap_bit0_is_deprecated:1,
				cap_user_rdpmc:1,
				cap_user_time:1,
				cap_user_time_zero:1,
				cap_user_time_short:1,
				cap_____res:58;

   So convert all bitfield definitions from the latter style to the
   former style.

 - Fix typos and grammar

 - Fix capitalization

 - Remove whitespace noise

 - Harmonize the definitions of various generations and groups of
   PERF_MEM_ ABI values.

 - Vertically align all definitions and assignments to the same
   column (48), as the first definition (enum perf_type_id),
   throughout the entire header.

 - And in general make the code and comments to be more in sync
   with each other and to be more readable overall.

No change in functionality.

Copy the changes over to tools/include/uapi/linux/perf_event.h.

Signed-off-by: Ingo Molnar 
Cc: Peter Zijlstra 
Cc: Arnaldo Carvalho de Melo 
Cc: Jiri Olsa 
Cc: Alexander Shishkin 
Cc: Mark Rutland 
Cc: Namhyung Kim 
Cc: Ian Rogers 
Link: https://lore.kernel.org/r/20250521221529.2547099-1-irogers@google.com

perf/uapi: Fix PERF_RECORD_SAMPLE comments in

2025-05-22T08:01:34+00:00

AAUX data for PERF_SAMPLE_AUX appears last. PERF_SAMPLE_CGROUP is
missing from the comment.

This makes the  comment match that in the
perf_event_open man page.

Signed-off-by: Ian Rogers 
Signed-off-by: Ingo Molnar 
Cc: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Arnaldo Carvalho de Melo 
Cc: James Clark 
Cc: Jiri Olsa 
Cc: Kan Liang 
Cc: Mark Rutland 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: linux-perf-users@vger.kernel.org
Link: https://lore.kernel.org/r/20250521221529.2547099-1-irogers@google.com

tools headers: Update the uapi/linux/perf_event.h copy with the kernel sources

2025-04-10T16:28:24+00:00

To pick up the changes in:

  c53e14f1ea4a8f8d perf: Extend per event callchain limit to branch stack

Addressing this perf tools build warning:

  Warning: Kernel ABI header differences:
    diff -u tools/include/uapi/linux/perf_event.h include/uapi/linux/perf_event.h

Please see tools/include/uapi/README for further details.

Acked-by: Ingo Molnar 
Tested-by: Venkat Rao Bagalkote 
Link: https://lore.kernel.org/r/20250410001125.391820-4-namhyung@kernel.org
Signed-off-by: Namhyung Kim

tools headers: Sync uapi/linux/perf_event.h with the kernel sources

2024-12-04T22:34:49+00:00

To pick up the changes in this cset:

  18d92bb57c39504d ("perf/core: Add aux_pause, aux_resume, aux_start_paused")

This addresses these perf build warnings:

  Warning: Kernel ABI header differences:
    diff -u tools/include/uapi/linux/perf_event.h include/uapi/linux/perf_event.h

Please see tools/include/uapi/README for further details.

Reviewed-by: James Clark 
Link: https://lore.kernel.org/r/20241203035349.1901262-3-namhyung@kernel.org
Signed-off-by: Namhyung Kim

tools/include: Sync uapi/linux/perf.h with the kernel sources

2024-08-06T21:34:29+00:00

To pick up changes from:

  608f6976c309 perf/x86/intel: Support new data source for Lunar Lake

This should be used to beautify perf syscall arguments and it addresses
these tools/perf build warnings:

  Warning: Kernel ABI header differences:
  diff -u tools/include/uapi/linux/perf_event.h include/uapi/linux/perf_event.h

Please see tools/include/uapi/README for details (it's in the first patch
of this series).

Cc: Peter Zijlstra 
Cc: Ingo Molnar 
Cc: Arnaldo Carvalho de Melo 
Cc: Mark Rutland 
Cc: Alexander Shishkin 
Cc: Jiri Olsa 
Cc: Ian Rogers 
Cc: Adrian Hunter 
Cc: "Liang, Kan" 
Cc: linux-perf-users@vger.kernel.org
Signed-off-by: Namhyung Kim

tools headers UAPI: Sync include/uapi/linux/perf_event.h header with the kernel

2023-11-06T21:13:34+00:00

Sync the new sample type for the branch counters feature.

Signed-off-by: Kan Liang 
Cc: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Alexey Bayduraev 
Cc: Andi Kleen 
Cc: Ian Rogers 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Mark Rutland 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Cc: Tinghao Zhang 
Link: https://lore.kernel.org/r/20231025201626.3000228-6-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo

tools include UAPI: Sync uapi/linux/perf_event.h with the kernel sources

2023-04-10T22:25:12+00:00

... to bring PERF_MEM_LVLNUM_UNC definition to userspace

Signed-off-by: Ravi Bangoria 
Acked-by: Namhyung Kim 
Cc: Adrian Hunter 
Cc: Ananth Narayan 
Cc: Ian Rogers 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Kajol Jain 
Cc: Kan Liang 
Cc: Leo Yan 
Cc: Peter Zijlstra 
Cc: Sandipan Das 
Cc: Santosh Shukla 
Cc: Stephane Eranian 
Link: https://lore.kernel.org/r/20230407112459.548-5-ravi.bangoria@amd.com
Signed-off-by: Arnaldo Carvalho de Melo

tools headers UAPI: Sync linux/perf_event.h with the kernel sources

2023-03-06T20:21:23+00:00

To pick up the changes in:

  09519ec3b19e4144 ("perf: Add perf_event_attr::config3")

The patches for the tooling side will come later.

This addresses this perf build warning:

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

Cc: Adrian Hunter 
Cc: Ian Rogers 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Rob Herring 
Cc: Will Deacon 
Link: https://lore.kernel.org/lkml/ZAZLYmDjWjSItWOq@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

tools headers UAPI: Sync linux/perf_event.h with the kernel sources

2022-10-26T13:45:16+00:00

To pick the changes in:

  cfef80bad4cf79cd ("perf/uapi: Define PERF_MEM_SNOOPX_PEER in kernel header file")
  ee3e88dfec23153d ("perf/mem: Introduce PERF_MEM_LVLNUM_{EXTN_MEM|IO}")
  b4e12b2d70fd9ecc ("perf: Kill __PERF_SAMPLE_CALLCHAIN_EARLY")

There is a kernel patch pending that renames PERF_MEM_LVLNUM_EXTN_MEM to
PERF_MEM_LVLNUM_CXL, tooling this time is ahead of the kernel :-)

This thus partially addresses this perf build warning:

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

Cc: Adrian Hunter 
Cc: Ian Rogers 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Ravi Bangoria 
Link: https://lore.kernel.org/lkml/Y1k53KMdzypmU0WS@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

tools headers UAPI: Sync include/uapi/linux/perf_event.h header with the kernel

2022-10-06T19:24:37+00:00

Two new fields for mem_lvl_num has been introduced: PERF_MEM_LVLNUM_IO
and PERF_MEM_LVLNUM_CXL which are required to support perf mem/c2c on
AMD platform.

Signed-off-by: Ravi Bangoria 
Acked-by: Jiri Olsa 
Cc: Alexander Shishkin 
Cc: Ali Saidi 
Cc: Ananth Narayan 
Cc: Andi Kleen 
Cc: Borislav Petkov 
Cc: Dave Hansen 
Cc: H. Peter Anvin 
Cc: Ian Rogers 
Cc: Ingo Molnar 
Cc: Joe Mario 
Cc: Kan Liang 
Cc: Kim Phillips 
Cc: Leo Yan 
Cc: Mark Rutland 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Sandipan Das 
Cc: Santosh Shukla 
Cc: Stephane Eranian 
Cc: Thomas Gleixner 
Cc: x86@kernel.org
Link: https://lore.kernel.org/r/20221006153946.7816-2-ravi.bangoria@amd.com
Signed-off-by: Arnaldo Carvalho de Melo