diff options
Diffstat (limited to 'tools/perf/tests/sw-clock.c')
| -rw-r--r-- | tools/perf/tests/sw-clock.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/tools/perf/tests/sw-clock.c b/tools/perf/tests/sw-clock.c index 2e41e2d32cc..6664a7cd828 100644 --- a/tools/perf/tests/sw-clock.c +++ b/tools/perf/tests/sw-clock.c @@ -9,7 +9,7 @@ #include "util/cpumap.h" #include "util/thread_map.h" -#define NR_LOOPS 1000000 +#define NR_LOOPS 10000000 /* * This test will open software clock events (cpu-clock, task-clock) @@ -34,7 +34,7 @@ static int __test__sw_clock_freq(enum perf_sw_ids clock_id) .freq = 1, }; - attr.sample_freq = 10000; + attr.sample_freq = 500; evlist = perf_evlist__new(); if (evlist == NULL) { @@ -42,7 +42,7 @@ static int __test__sw_clock_freq(enum perf_sw_ids clock_id) return -1; } - evsel = perf_evsel__new(&attr, 0); + evsel = perf_evsel__new(&attr); if (evsel == NULL) { pr_debug("perf_evsel__new\n"); goto out_free_evlist; @@ -57,7 +57,14 @@ static int __test__sw_clock_freq(enum perf_sw_ids clock_id) goto out_delete_maps; } - perf_evlist__open(evlist); + if (perf_evlist__open(evlist)) { + const char *knob = "/proc/sys/kernel/perf_event_max_sample_rate"; + + err = -errno; + pr_debug("Couldn't open evlist: %s\nHint: check %s, using %" PRIu64 " in this test.\n", + strerror(errno), knob, (u64)attr.sample_freq); + goto out_delete_maps; + } err = perf_evlist__mmap(evlist, 128, true); if (err < 0) { @@ -78,7 +85,7 @@ static int __test__sw_clock_freq(enum perf_sw_ids clock_id) struct perf_sample sample; if (event->header.type != PERF_RECORD_SAMPLE) - continue; + goto next_event; err = perf_evlist__parse_sample(evlist, event, &sample); if (err < 0) { @@ -88,6 +95,8 @@ static int __test__sw_clock_freq(enum perf_sw_ids clock_id) total_periods += sample.period; nr_samples++; +next_event: + perf_evlist__mmap_consume(evlist, 0); } if ((u64) nr_samples == total_periods) { |