From: Thomas Richter <[email protected]> Test case 21 (Number of exit events of a simple workload) fails on s390x. The reason is the invalid sample frequency supplied for this test. On s390x the minimum sample frequency is much higher (see output of /proc/service_levels).
Supply a save sample frequency value for s390x to fix this. The value will be adjusted by the s390x CPUMF frequency convertion function to a value well below the sysctl kernel.perf_event_max_sample_rate value. Signed-off-by: Thomas Richter <[email protected]> Reviewed-by: Hendrik Brueckner <[email protected]> Cc: Martin Schwidefsky <[email protected]> LPU-Reference: [email protected] Link: https://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/tests/task-exit.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/perf/tests/task-exit.c b/tools/perf/tests/task-exit.c index 98c098475e71..5d06ac81f7f1 100644 --- a/tools/perf/tests/task-exit.c +++ b/tools/perf/tests/task-exit.c @@ -84,7 +84,11 @@ int test__task_exit(struct test *test __maybe_unused, int subtest __maybe_unused evsel = perf_evlist__first(evlist); evsel->attr.task = 1; +#ifdef __s390x__ + evsel->attr.sample_freq = 1000000; +#else evsel->attr.sample_freq = 1; +#endif evsel->attr.inherit = 0; evsel->attr.watermark = 0; evsel->attr.wakeup_events = 1; -- 2.13.6
