Commit-ID: 996548499df61babae5306544c7daf5fd39db31c Gitweb: https://git.kernel.org/tip/996548499df61babae5306544c7daf5fd39db31c Author: Thomas Richter <tmri...@linux.vnet.ibm.com> AuthorDate: Thu, 23 Nov 2017 12:46:11 +0100 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Tue, 28 Nov 2017 14:28:26 -0300
perf test: Fix test 21 for s390x 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 <tmri...@linux.vnet.ibm.com> Reviewed-by: Hendrik Brueckner <brueck...@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidef...@de.ibm.com> LPU-Reference: 20171123114611.93397-1-tmri...@linux.vnet.ibm.com Link: https://lkml.kernel.org/n/tip-1ynblyhi1n81idpido59n...@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- 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 bc4a734..89c8e16 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;
