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perf test: Restrict uniquifying test to machines with 'uncore_imc'

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The test would fail if target machine does not have 'uncore_imc'
devices.

Since event uniquifying behavior is similar among different
architectures, we are restricting the test to only run on machines with
`uncore_imc` devices.

Suggested-by: Ian Rogers <irogers@google.com>
Signed-off-by: Chun-Tse Shao <ctshao@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250521224513.1104129-1-ctshao@google.com
[ Skip the test, i.e. return 2, instead of returning 0 as if the test had succeed ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Chun-Tse Shao
2025-05-21 15:44:44 -07:00
committed by Arnaldo Carvalho de Melo
parent 44a5ab7a79
commit 070b315333
1 changed files with 10 additions and 2 deletions
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12
tools/perf/tests/shell/stat+event_uniquifying.sh
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@@ -9,7 +9,8 @@ perf_tool=perf
err=0
test_event_uniquifying() {
# We use `clockticks` to verify the uniquify behavior.
# We use `clockticks` in `uncore_imc` to verify the uniquify behavior.
pmu="uncore_imc"
event="clockticks"
# If the `-A` option is added, the event should be uniquified.
@@ -43,11 +44,18 @@ test_event_uniquifying() {
echo "stat event uniquifying test"
uniquified_event_array=()
# Skip if the machine does not have `uncore_imc` device.
if ! ${perf_tool} list pmu | grep -q ${pmu}; then
echo "Target does not support PMU ${pmu} [Skipped]"
err=2
return
fi
# Check how many uniquified events.
while IFS= read -r line; do
uniquified_event=$(echo "$line" | awk '{print $1}')
uniquified_event_array+=("${uniquified_event}")
done < <(${perf_tool} list -v ${event} | grep "\[Kernel PMU event\]")
done < <(${perf_tool} list -v ${event} | grep ${pmu})
perf_command="${perf_tool} stat -e $event -A -o ${stat_output} -- true"
$perf_command