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perf test: Add a test for default perf stat command

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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>
This commit is contained in:
James Clark 2024-09-26 15:48:38 +01:00 committed by Namhyung Kim
parent 14b6b269f4
commit 65d1182191
1 changed files with 25 additions and 0 deletions
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25
tools/perf/tests/shell/stat.sh
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@ -148,6 +148,30 @@ 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
@ -155,4 +179,5 @@ test_stat_repeat_weak_groups
test_topdown_groups
test_topdown_weak_groups
test_cputype
test_hybrid
exit $err