1 files changed, 10 insertions, 0 deletions

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index b38eaa34b28e..ee68d6944e61 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -34,6 +34,16 @@ int __perf_evsel__sample_size(u64 sample_type)
         return size;
 }
 
+static void hists__init(struct hists *hists)
+{
+        memset(hists, 0, sizeof(*hists));
+        hists->entries_in_array[0] = hists->entries_in_array[1] = RB_ROOT;
+        hists->entries_in = &hists->entries_in_array[0];
+        hists->entries_collapsed = RB_ROOT;
+        hists->entries = RB_ROOT;
+        pthread_mutex_init(&hists->lock, NULL);
+}
+
 void perf_evsel__init(struct perf_evsel *evsel,
                       struct perf_event_attr *attr, int idx)
 {