[PATCH linux-next] perf test: Fix test perf evlist for z/VM s390x

From: Thomas Richter

Date: Mon Jan 26 2026 - 05:19:06 EST


Perf test case 'perf evlist tests' fails on z/VM machines on s390.

The failure is causes by event cycles. This event is not available
on virtualized machines like z/VM on s390.
Change to software event cpu-clock to fix this.

Output before:
# ./perf test 78
79: perf evlist tests : FAILED!
#

Output after:
# ./perf test 78
79: perf evlist tests : Ok
#

Fixes: b04d2b919912 ("perf test: Fix test case perf evlist tests for s390x")
Signed-off-by: Thomas Richter <tmricht@xxxxxxxxxxxxx>
Tested-by: Jan Polensky <japo@xxxxxxxxxxxxx>
Reviewed-by: Jan Polensky <japo@xxxxxxxxxxxxx>
Cc: Ian Rogers <irogers@xxxxxxxxxx>
---
tools/perf/tests/shell/evlist.sh | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/tests/shell/evlist.sh b/tools/perf/tests/shell/evlist.sh
index 5632be391710..8a22f4171c07 100755
--- a/tools/perf/tests/shell/evlist.sh
+++ b/tools/perf/tests/shell/evlist.sh
@@ -21,13 +21,13 @@ trap trap_cleanup EXIT TERM INT

test_evlist_simple() {
echo "Simple evlist test"
- if ! perf record -e cycles -o "${perfdata}" true 2> /dev/null
+ if ! perf record -e cpu-clock -o "${perfdata}" true 2> /dev/null
then
echo "Simple evlist [Failed record]"
err=1
return
fi
- if ! perf evlist -i "${perfdata}" | grep -q "cycles"
+ if ! perf evlist -i "${perfdata}" | grep -q "cpu-clock"
then
echo "Simple evlist [Failed to list event]"
err=1
--
2.52.0