[PATCH perf/core 19/22] perf: fix hists_evsel to release hists

[Masami Hiramatsu]

Since hists__init doesn't set the destructor of
hists_evsel (which is an extended evsel structure),
when hists_evsel is released, the extended part of
the hists_evsel is not deleted (note that the
hists_evsel object itself is freed).

This fixes it to add a destructor for hists__evsel
and to set it up.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>
---
 tools/perf/util/hist.c |   10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 6e8e0ee..565ea35 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -1567,6 +1567,13 @@ static int hists_evsel__init(struct perf_evsel *evsel)
 	return 0;
 }
 
+static void hists_evsel__exit(struct perf_evsel *evsel)
+{
+	struct hists *hists = evsel__hists(evsel);
+
+	hists__delete_entries(hists);
+}
+
 /*
  * XXX We probably need a hists_evsel__exit() to free the hist_entries
  * stored in the rbtree...
@@ -1575,7 +1582,8 @@ static int hists_evsel__init(struct perf_evsel *evsel)
 int hists__init(void)
 {
 	int err = perf_evsel__object_config(sizeof(struct hists_evsel),
-					    hists_evsel__init, NULL);
+					    hists_evsel__init,
+					    hists_evsel__exit);
 	if (err)
 		fputs("FATAL ERROR: Couldn't setup hists class\n", stderr);
 

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