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perf test: Fix hybrid testing of event fallback test

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The mem-loads-aux event exists on hybrid systems but the "cpu" PMU
does not. This causes an event parsing error which erroneously makes
the test look like it is failing. Avoid naming the PMU to avoid
this. Rather than cleaning up perf.data in the directory the test is
run, explicitly send the 'perf record' output to /dev/null and avoid
any cleanup scripts.

Fixes: fc9c17b223 ("perf test: Add a perf event fallback test")
Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Ian Rogers 2025-12-01 15:11:36 -08:00 committed by Namhyung Kim
parent 441863ae3d
commit 44f6b44027
1 changed files with 2 additions and 17 deletions
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19
tools/perf/tests/shell/test_event_open_fallback.sh
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@ -6,24 +6,9 @@ skip_cnt=0
ok_cnt=0
err_cnt=0
cleanup()
{
rm -f perf.data
rm -f perf.data.old
trap - EXIT TERM INT
}
trap_cleanup()
{
cleanup
exit 1
}
trap trap_cleanup EXIT TERM INT
perf_record()
{
perf record "$@" -- true 1>/dev/null 2>&1
perf record -o /dev/null "$@" -- true 1>/dev/null 2>&1
}
test_decrease_precise_ip()
@ -49,7 +34,7 @@ test_decrease_precise_ip_complicated()
perf list pmu | grep -q 'mem-loads-aux' || return 2
if ! perf_record -e '{cpu/mem-loads-aux/S,cpu/mem-loads/PS}'; then
if ! perf_record -e '{mem-loads-aux:S,mem-loads:PS}'; then
return 1
fi
return 0