6.6-stable review patch. If anyone has any objections, please let me know.
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From: James Clark james.clark@linaro.org
[ 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 namhyung@kernel.org Acked-by: Kan Liang kan.liang@linux.intel.com Signed-off-by: James Clark james.clark@linaro.org Cc: Yang Jihong yangjihong@bytedance.com Cc: Dominique Martinet asmadeus@codewreck.org Cc: Colin Ian King colin.i.king@gmail.com Cc: Howard Chu howardchu95@gmail.com Cc: Ze Gao zegao2021@gmail.com Cc: Yicong Yang yangyicong@hisilicon.com Cc: Weilin Wang weilin.wang@intel.com Cc: Will Deacon will@kernel.org Cc: Mike Leach mike.leach@linaro.org Cc: Jing Zhang renyu.zj@linux.alibaba.com Cc: Yang Li yang.lee@linux.alibaba.com Cc: Leo Yan leo.yan@linux.dev Cc: ak@linux.intel.com Cc: Athira Rajeev atrajeev@linux.vnet.ibm.com Cc: linux-arm-kernel@lists.infradead.org Cc: Yanteng Si siyanteng@loongson.cn Cc: Sun Haiyong sunhaiyong@loongson.cn Cc: John Garry john.g.garry@oracle.com Link: https://lore.kernel.org/r/20240926144851.245903-8-james.clark@linaro.org Signed-off-by: Namhyung Kim namhyung@kernel.org Stable-dep-of: 24937ee839e4 ("perf evsel: Ensure the fallback message is always written to") Signed-off-by: Sasha Levin sashal@kernel.org --- tools/perf/tests/shell/stat.sh | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)
diff --git a/tools/perf/tests/shell/stat.sh b/tools/perf/tests/shell/stat.sh index 3f1e67795490a..c6df7eec96b98 100755 --- a/tools/perf/tests/shell/stat.sh +++ b/tools/perf/tests/shell/stat.sh @@ -146,6 +146,30 @@ test_cputype() { echo "cputype test [Success]" }
+test_hybrid() { + # Test the default stat command on hybrid devices opens one cycles event for + # each CPU type. + echo "hybrid test" + + # Count the number of core PMUs, assume minimum of 1 + pmus=$(ls /sys/bus/event_source/devices/*/cpus 2>/dev/null | wc -l) + if [ "$pmus" -lt 1 ] + then + pmus=1 + fi + + # Run default Perf stat + cycles_events=$(perf stat -- true 2>&1 | grep -E "/cycles/| cycles " | wc -l) + + if [ "$pmus" -ne "$cycles_events" ] + then + echo "hybrid test [Found $pmus PMUs but $cycles_events cycles events. Failed]" + err=1 + return + fi + echo "hybrid test [Success]" +} + test_default_stat test_stat_record_report test_stat_record_script @@ -153,4 +177,5 @@ test_stat_repeat_weak_groups test_topdown_groups test_topdown_weak_groups test_cputype +test_hybrid exit $err