kernel/linux.git/tools/perf/tests/shell, branch v6.12.80

perf test stat tests: Fix for virtualized machines

2026-03-04T12:20:49+00:00

[ Upstream commit e272628902c1c96731e2d9f62a7fc77767686eb0 ] On s390 'perf test's 'perf stat tests', subtest test_hybrid fails for z/VM systems. The root cause is this statement: $(perf stat -a -- sleep 0.1 2>&1 |\ grep -E "/cpu-cycles/[uH]*| cpu-cycles[:uH]* -c) The 'perf stat' output on a s390 z/VM system is # perf stat -a -- sleep 0.1 2>&1 Performance counter stats for 'system wide': 56 context-switches # 46.3 cs/sec cs_per_second 1,210.41 msec cpu-clock # 11.9 CPUs CPUs_utilized 12 cpu-migrations # 9.9 migrations/sec ... 81 page-faults # 66.9 faults/sec ... 0.100891009 seconds time elapsed The grep command does not match any single line and exits with error code 1. As the bash script is executed with 'set -e', it aborts with the first error code being non-zero. Fix this and use 'wc -l' to count matching lines instead of 'grep ... -c'. Output before: # perf test 102 102: perf stat tests : FAILED! # Output after: # perf test 102 102: perf stat tests : Ok # Fixes: bb6e7cb11d97ce19 ("perf tools: Add fallback for exclude_guest") Reviewed-by: Ian Rogers Reviewed-by: James Clark Signed-off-by: Thomas Richter Cc: Alexander Gordeev Cc: Heiko Carstens Cc: Jan Polensky Cc: linux-s390@vger.kernel.org Cc: Namhyung Kim Cc: Sumanth Korikkar Cc: Vasily Gorbik Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf test stat: Update test expectations and events

2026-03-04T12:20:49+00:00

[ Upstream commit a48cd551d7436be3b1bd65c63a6d00163f7e7706 ] test_stat_record_report and test_stat_record_script used default output which triggers a bug when sending metrics. As this isn't relevant to the test switch to using named software events. Update the match in test_hybrid as the cycles event is now cpu-cycles to workaround potential ARM issues. Signed-off-by: Ian Rogers Signed-off-by: Namhyung Kim Stable-dep-of: e272628902c1 ("perf test stat tests: Fix for virtualized machines") Signed-off-by: Sasha Levin

perf test stat: Avoid hybrid assumption when virtualized

2025-10-19T14:34:06+00:00

commit f9c506fb69bdcfb9d7138281378129ff037f2aa1 upstream. The cycles event will fallback to task-clock in the hybrid test when running virtualized. Change the test to not fail for this. Fixes: 65d11821910bd910 ("perf test: Add a test for default perf stat command") Reviewed-by: James Clark Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kan Liang Cc: Mark Rutland Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20241212173354.9860-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman

perf tools: Add fallback for exclude_guest

2025-10-19T14:33:37+00:00

[ Upstream commit bb6e7cb11d97ce1957894d30d13bfad3e8bfefe9 ] Commit 7b100989b4f6bce70 ("perf evlist: Remove __evlist__add_default") changed to parse "cycles:P" event instead of creating a new cycles event for perf record. But it also changed the way how modifiers are handled so it doesn't set the exclude_guest bit by default. It seems Apple M1 PMU requires exclude_guest set and returns EOPNOTSUPP if not. Let's add a fallback so that it can work with default events. Also update perf stat hybrid tests to handle possible u or H modifiers. Reviewed-by: Ian Rogers Reviewed-by: James Clark Reviewed-by: Ravi Bangoria Acked-by: Kan Liang Cc: James Clark Cc: Atish Patra Cc: Mingwei Zhang Cc: Kajol Jain Cc: Thomas Richter Cc: Palmer Dabbelt Link: https://lore.kernel.org/r/20241016062359.264929-2-namhyung@kernel.org Fixes: 7b100989b4f6bce70 ("perf evlist: Remove __evlist__add_default") Signed-off-by: Namhyung Kim Stable-dep-of: 24937ee839e4 ("perf evsel: Ensure the fallback message is always written to") Signed-off-by: Sasha Levin

perf test: Add a test for default perf stat command

2025-10-19T14:33:37+00:00

[ Upstream commit 65d11821910bd910a2b4b5b005360d036c76ecef ] Test that one cycles event is opened for each core PMU when "perf stat" is run without arguments. The event line can either be output as "pmu/cycles/" or just "cycles" if there is only one PMU. Include 2 spaces for padding in the one PMU case to avoid matching when the word cycles is included in metric descriptions. Acked-by: Namhyung Kim Acked-by: Kan Liang Signed-off-by: James Clark Cc: Yang Jihong Cc: Dominique Martinet Cc: Colin Ian King Cc: Howard Chu Cc: Ze Gao Cc: Yicong Yang Cc: Weilin Wang Cc: Will Deacon Cc: Mike Leach Cc: Jing Zhang Cc: Yang Li Cc: Leo Yan Cc: ak@linux.intel.com Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: Yanteng Si Cc: Sun Haiyong Cc: John Garry Link: https://lore.kernel.org/r/20240926144851.245903-8-james.clark@linaro.org Signed-off-by: Namhyung Kim Stable-dep-of: 24937ee839e4 ("perf evsel: Ensure the fallback message is always written to") Signed-off-by: Sasha Levin

perf test shell lbr: Avoid failures with perf event paranoia

2025-10-19T14:33:37+00:00

[ Upstream commit 48314d20fe467d6653783cbf5536cb2fcc9bdd7c ] When not running as root and with higher perf event paranoia values the perf record LBR tests could fail rather than skipping the problematic tests. Add the sensitivity to the test and confirm it passes with paranoia values from -1 to 2. Committer testing: Testing with '$ perf test -vv lbr', i.e. as non root, and then comparing the output shows the mentioned errors before this patch: acme@x1:~$ grep -m1 "model name" /proc/cpuinfo model name : 13th Gen Intel(R) Core(TM) i7-1365U acme@x1:~$ Before: 132: perf record LBR tests : Skip After: 132: perf record LBR tests : Ok Fixes: 32559b99e0f59070 ("perf test: Add set of perf record LBR tests") Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Chun-Tse Shao Cc: Howard Chu Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Kan Liang Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf test: Update sysfs path for core PMU caps

2025-10-19T14:33:36+00:00

[ Upstream commit b9228817127430356c929847f111197776201225 ] While CPU is a system device, it'd be better to use a path for event_source devices when it checks PMU capability. Reviewed-by: Ian Rogers Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kan Liang Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20250509213017.204343-2-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo Stable-dep-of: 48314d20fe46 ("perf test shell lbr: Avoid failures with perf event paranoia") Signed-off-by: Sasha Levin

perf test trace_btf_enum: Skip if permissions are insufficient

2025-10-19T14:33:35+00:00

[ Upstream commit 4bd5bd8dbd41a208fb73afb65bda6f38e2b5a637 ] Modify test behavior to skip if BPF calls fail with "Operation not permitted". Fixes: d66763fed30f0bd8 ("perf test trace_btf_enum: Add regression test for the BTF augmentation of enums in 'perf trace'") Reviewed-by: James Clark Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Athira Rajeev Cc: Blake Jones Cc: Chun-Tse Shao Cc: Collin Funk Cc: Howard Chu Cc: Ingo Molnar Cc: Jan Polensky Cc: Jiri Olsa Cc: Kan Liang Cc: Li Huafei Cc: Mark Rutland Cc: Nam Cao Cc: Peter Zijlstra Cc: Steinar H. Gunderson Cc: Thomas Gleixner Link: https://lore.kernel.org/r/20250821163820.1132977-3-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf bpf-filter: Fix a parsing error with comma

2025-04-10T12:39:26+00:00

[ Upstream commit 35d13f841a3d8159ef20d5e32a9ed3faa27875bc ] The previous change to support cgroup filters introduced a bug that pathname can include commas. It confused the lexer to treat an item and the trailing comma as a single token. And it resulted in a parse error: $ sudo perf record -e cycles:P --filter 'period > 0, ip > 64' -- true perf_bpf_filter: Error: Unexpected item: 0, perf_bpf_filter: syntax error, unexpected BFT_ERROR, expecting BFT_NUM Usage: perf record [] [] or: perf record [] -- [] --filter event filter It should get "0" and "," separately. An easiest fix would be to remove "," from the possible pathname characters. As it's for cgroup names, probably ok to assume it won't have commas in the pathname. I found that the existing BPF filtering test didn't have any complex filter condition with commas. Let's update the group filter test which is supposed to test filter combinations like this. Link: https://lore.kernel.org/r/20250307220922.434319-1-namhyung@kernel.org Fixes: 91e88437d5156b20 ("perf bpf-filter: Support filtering on cgroups") Reported-by: Sally Shi Signed-off-by: Namhyung Kim Signed-off-by: Sasha Levin

perf tools: annotate asm_pure_loop.S

2025-04-10T12:39:26+00:00

[ Upstream commit 9a352a90e88a041f4b26d359493e12a7f5ae1a6a ] Annotate so it is built with non-executable stack. Fixes: 8b97519711c3 ("perf test: Add asm pureloop test tool") Signed-off-by: Marcus Meissner Reviewed-by: Leo Yan Link: https://lore.kernel.org/r/20250323085410.23751-1-meissner@suse.de Signed-off-by: Namhyung Kim Signed-off-by: Sasha Levin