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-rw-r--r--tools/perf/lib/evsel.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/perf/lib/evsel.c b/tools/perf/lib/evsel.c
index 24abc80dd767..a8cb582e2721 100644
--- a/tools/perf/lib/evsel.c
+++ b/tools/perf/lib/evsel.c
@@ -230,3 +230,33 @@ struct perf_event_attr *perf_evsel__attr(struct perf_evsel *evsel)
{
return &evsel->attr;
}
+
+int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads)
+{
+ if (ncpus == 0 || nthreads == 0)
+ return 0;
+
+ if (evsel->system_wide)
+ nthreads = 1;
+
+ evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id));
+ if (evsel->sample_id == NULL)
+ return -ENOMEM;
+
+ evsel->id = zalloc(ncpus * nthreads * sizeof(u64));
+ if (evsel->id == NULL) {
+ xyarray__delete(evsel->sample_id);
+ evsel->sample_id = NULL;
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+void perf_evsel__free_id(struct perf_evsel *evsel)
+{
+ xyarray__delete(evsel->sample_id);
+ evsel->sample_id = NULL;
+ zfree(&evsel->id);
+ evsel->ids = 0;
+}