diff options
Diffstat (limited to 'tools/perf/util/pmu.c')
| -rw-r--r-- | tools/perf/util/pmu.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 51d437f55d18..6199a3174ab9 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -752,6 +752,19 @@ perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused) return NULL; } +static int pmu_max_precise(const char *name) +{ + char path[PATH_MAX]; + int max_precise = -1; + + scnprintf(path, PATH_MAX, + "bus/event_source/devices/%s/caps/max_precise", + name); + + sysfs__read_int(path, &max_precise); + return max_precise; +} + static struct perf_pmu *pmu_lookup(const char *name) { struct perf_pmu *pmu; @@ -784,6 +797,7 @@ static struct perf_pmu *pmu_lookup(const char *name) pmu->name = strdup(name); pmu->type = type; pmu->is_uncore = pmu_is_uncore(name); + pmu->max_precise = pmu_max_precise(name); pmu_add_cpu_aliases(&aliases, pmu); INIT_LIST_HEAD(&pmu->format); |