linux-toradex.git/tools/perf/arch/x86/tests, branch master

perf test amd ibs: Fix incorrect kernel version check

2026-05-23T00:30:38+00:00

"AMD IBS sample period" unit test is getting skipped on kernel v7.x. Fix
the kernel version >= v6.15 check.

Fixes: 21fb366b2f457611 ("perf test amd: Skip amd-ibs-period test on kernel < v6.15")
Signed-off-by: Ravi Bangoria 
Acked-by: Namhyung Kim 
Cc: Ananth Narayan 
Cc: Dapeng Mi 
Cc: Ian Rogers 
Cc: Ingo Molnar 
Cc: James Clark 
Cc: Manali Shukla 
Cc: Peter Zijlstra 
Cc: Ravi Bangoria 
Cc: Sandipan Das 
Cc: Santosh Shukla 
Signed-off-by: Arnaldo Carvalho de Melo

perf arch x86 tests: Add test for topdown event sorting

2026-05-20T21:24:01+00:00

Add a test to capture the comment in tools/perf/arch/x86/util/evlist.c.

Test that slots and topdown-retiring get appropriately sorted with
respect to instructions when they're all specified together.

When the PMU requires topdown event grouping (indicated by the pressence
of the slots event) metric events should be after slots, which should be
the group leader.

Add a related test that when the slots event isn't given it is injected
into the appropriate group.

Signed-off-by: Ian Rogers 
Tested-by: Zide Chen 
Cc: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Collin Funk 
Cc: Dmitrii Dolgov <9erthalion6@gmail.com>
Cc: German Gomez 
Cc: Ingo Molnar 
Cc: James Clark 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Use calloc() where applicable

2026-04-09T02:21:05+00:00

Instead of using zalloc(nr_entries * sizeof_entry) that is what calloc()
does.

In some places where linux/zalloc.h isn't needed, remove it, add when
needed and was getting it indirectly.

Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: Namhyung Kim

perf tools: Switch printf("...%s", strerror(errno)) to printf("...%m")

2026-01-14T20:22:50+00:00

strerror() has thread safety issues, strerror_r() requires stack
allocated buffers.

Code in perf has already been using the "%m" formatting flag that is a
widely support glibc extension to print the current errno's description.

Expand the usage of this formatting flag and remove usage of
strerror()/strerror_r().

Signed-off-by: Ian Rogers 
Acked-by: Namhyung Kim 
Cc: Adrian Hunter 
Cc: Alexander Shishkin 
Cc: Alexandre Ghiti 
Cc: Blake Jones 
Cc: Chun-Tse Shao 
Cc: Dmitriy Vyukov 
Cc: Dr. David Alan Gilbert 
Cc: Haibo Xu 
Cc: Howard Chu 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Leo Yan 
Cc: Peter Zijlstra 
Cc: Stephen Brennan 
Cc: Thomas Falcon 
Cc: Yunseong Kim 
Cc: Zhongqiu Han 
Signed-off-by: Arnaldo Carvalho de Melo

perf auxtrace: Remove errno.h from auxtrace.h and fix transitive dependencies

2025-11-14T07:03:11+00:00

errno.h isn't used in auxtrace.h so remove it and fix build failures
caused by transitive dependencies through auxtrace.h on errno.h.

Signed-off-by: Ian Rogers 
Reviewed-by: James Clark 
Signed-off-by: Namhyung Kim

perf build: Remove NO_AUXTRACE build option

2025-11-14T07:03:11+00:00

The NO_AUXTRACE build option was used when the __get_cpuid feature
test failed or if it was provided on the command line. The option no
longer avoids a dependency on a library and so having the option is
just adding complexity to the code base. Remove the option
CONFIG_AUXTRACE from Build files and HAVE_AUXTRACE_SUPPORT by assuming
it is always defined.

Signed-off-by: Ian Rogers 
Reviewed-by: James Clark 
Signed-off-by: Namhyung Kim

perf intel-pt: Use the perf provided "cpuid.h"

2025-11-14T07:03:11+00:00

Rather than having a feature test and include of  for the
__get_cpuid function, use the cpuid function provided by
tools/perf/arch/x86/util/cpuid.h.

Signed-off-by: Ian Rogers 
Reviewed-by: James Clark 
Signed-off-by: Namhyung Kim

perf test: Fix a build error in x86 topdown test

2025-08-18T18:52:22+00:00

There's an environment that caused the following build error.  Include
"debug.h" (under util directory) to fix it.

  arch/x86/tests/topdown.c: In function 'event_cb':
  arch/x86/tests/topdown.c:53:25: error: implicit declaration of function 'pr_debug'
                                         [-Werror=implicit-function-declaration]
     53 |                         pr_debug("Broken topdown information for '%s'\n", evsel__name(evsel));
        |                         ^~~~~~~~
  cc1: all warnings being treated as errors

Link: https://lore.kernel.org/r/20250815164122.289651-1-namhyung@kernel.org
Fixes: 5b546de9cc177936 ("perf topdown: Use attribute to see an event is a topdown metic or slots")
Reported-by: Naresh Kamboju 
Signed-off-by: Namhyung Kim

perf test: Move PERF_SAMPLE_WEIGHT_STRUCT parsing to common test

2025-07-25T17:37:58+00:00

test__x86_sample_parsing is identical to test__sample_parsing except
it explicitly tested PERF_SAMPLE_WEIGHT_STRUCT. Now the parsing code
is common move the PERF_SAMPLE_WEIGHT_STRUCT to the common sample
parsing test and remove the x86 version.

Signed-off-by: Ian Rogers 
Link: https://lore.kernel.org/r/20250724163302.596743-22-irogers@google.com
Signed-off-by: Namhyung Kim

perf sample: Remove arch notion of sample parsing

2025-07-25T17:37:58+00:00

By definition arch sample parsing and synthesis will inhibit certain
kinds of cross-platform record then analysis (report, script,
etc.). Remove arch_perf_parse_sample_weight and
arch_perf_synthesize_sample_weight replacing with a common
implementation. Combine perf_sample p_stage_cyc and retire_lat as
weight3 to capture the differing uses regardless of compiled for
architecture.

Signed-off-by: Ian Rogers 
Link: https://lore.kernel.org/r/20250724163302.596743-21-irogers@google.com
Signed-off-by: Namhyung Kim