diff options
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/evlist.h | 2 | ||||
| -rw-r--r-- | tools/perf/util/record.c | 37 |
2 files changed, 39 insertions, 0 deletions
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index 649d6ea98a8..8a04aae95a1 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -193,4 +193,6 @@ static inline void perf_mmap__write_tail(struct perf_mmap *md, pc->data_tail = tail; } +bool perf_evlist__can_select_event(struct perf_evlist *evlist, const char *str); + #endif /* __PERF_EVLIST_H */ diff --git a/tools/perf/util/record.c b/tools/perf/util/record.c index c8845b107f6..e5104538c35 100644 --- a/tools/perf/util/record.c +++ b/tools/perf/util/record.c @@ -177,3 +177,40 @@ int perf_record_opts__config(struct perf_record_opts *opts) { return perf_record_opts__config_freq(opts); } + +bool perf_evlist__can_select_event(struct perf_evlist *evlist, const char *str) +{ + struct perf_evlist *temp_evlist; + struct perf_evsel *evsel; + int err, fd, cpu; + bool ret = false; + + temp_evlist = perf_evlist__new(); + if (!temp_evlist) + return false; + + err = parse_events(temp_evlist, str); + if (err) + goto out_delete; + + evsel = perf_evlist__last(temp_evlist); + + if (!evlist || cpu_map__empty(evlist->cpus)) { + struct cpu_map *cpus = cpu_map__new(NULL); + + cpu = cpus ? cpus->map[0] : 0; + cpu_map__delete(cpus); + } else { + cpu = evlist->cpus->map[0]; + } + + fd = sys_perf_event_open(&evsel->attr, -1, cpu, -1, 0); + if (fd >= 0) { + close(fd); + ret = true; + } + +out_delete: + perf_evlist__delete(temp_evlist); + return ret; +} |