diff options
Diffstat (limited to 'tools/perf/util/pmu.c')
| -rw-r--r-- | tools/perf/util/pmu.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 6631d828db3d..8a2229da594f 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -9,6 +9,7 @@ #include "util.h" #include "pmu.h" #include "parse-events.h" +#include "cpumap.h" #define EVENT_SOURCE_DEVICE_PATH "/bus/event_source/devices/" @@ -253,6 +254,33 @@ static void pmu_read_sysfs(void) closedir(dir); } +static struct cpu_map *pmu_cpumask(char *name) +{ + struct stat st; + char path[PATH_MAX]; + const char *sysfs; + FILE *file; + struct cpu_map *cpus; + + sysfs = sysfs_find_mountpoint(); + if (!sysfs) + return NULL; + + snprintf(path, PATH_MAX, + "%s/bus/event_source/devices/%s/cpumask", sysfs, name); + + if (stat(path, &st) < 0) + return NULL; + + file = fopen(path, "r"); + if (!file) + return NULL; + + cpus = cpu_map__read(file); + fclose(file); + return cpus; +} + static struct perf_pmu *pmu_lookup(char *name) { struct perf_pmu *pmu; @@ -275,6 +303,8 @@ static struct perf_pmu *pmu_lookup(char *name) if (!pmu) return NULL; + pmu->cpus = pmu_cpumask(name); + pmu_aliases(name, &aliases); INIT_LIST_HEAD(&pmu->format); |