diff options
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/evlist.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index b4c43ac4583f8..c1b46080426b5 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1053,6 +1053,9 @@ int perf_evlist__set_tp_filter(struct evlist *evlist, const char *filter) struct evsel *evsel; int err = 0; + if (filter == NULL) + return -1; + evlist__for_each_entry(evlist, evsel) { if (evsel->core.attr.type != PERF_TYPE_TRACEPOINT) continue; @@ -1065,16 +1068,15 @@ int perf_evlist__set_tp_filter(struct evlist *evlist, const char *filter) return err; } -int perf_evlist__set_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids) +static char *asprintf__tp_filter_pids(size_t npids, pid_t *pids) { char *filter; - int ret = -1; size_t i; for (i = 0; i < npids; ++i) { if (i == 0) { if (asprintf(&filter, "common_pid != %d", pids[i]) < 0) - return -1; + return NULL; } else { char *tmp; @@ -1086,9 +1088,18 @@ int perf_evlist__set_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t * } } - ret = perf_evlist__set_tp_filter(evlist, filter); + return filter; out_free: free(filter); + return NULL; +} + +int perf_evlist__set_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids) +{ + char *filter = asprintf__tp_filter_pids(npids, pids); + int ret = perf_evlist__set_tp_filter(evlist, filter); + + free(filter); return ret; } |