perf top: Add exit routine for main thread

Add exit_process_thread that reverses init_process_thread. This avoids
leak sanitizer reporting memory leaks.

Signed-off-by: Ian Rogers <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Ali Saidi <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Athira Rajeev <[email protected]>
Cc: Brian Robbins <[email protected]>
Cc: Changbin Du <[email protected]>
Cc: Dmitrii Dolgov <[email protected]>
Cc: Fangrui Song <[email protected]>
Cc: German Gomez <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Ivan Babrou <[email protected]>
Cc: James Clark <[email protected]>
Cc: Jing Zhang <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: John Garry <[email protected]>
Cc: K Prateek Nayak <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Leo Yan <[email protected]>
Cc: Liam Howlett <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Miguel Ojeda <[email protected]>
Cc: Mike Leach <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Naveen N. Rao <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ravi Bangoria <[email protected]>
Cc: Sean Christopherson <[email protected]>
Cc: Steinar H. Gunderson <[email protected]>
Cc: Suzuki Poulouse <[email protected]>
Cc: Wenyu Liu <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Yang Jihong <[email protected]>
Cc: Ye Xingchen <[email protected]>
Cc: Yuan Can <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

1 files changed, 10 insertions, 1 deletions

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 99010dfa5760..c363c04e16df 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -392,7 +392,7 @@ static void prompt_percent(int *target, const char *msg)
 
 static void perf_top__prompt_symbol(struct perf_top *top, const char *msg)
 {
-	char *buf = malloc(0), *p;
+	char *buf = NULL, *p;
 	struct hist_entry *syme = top->sym_filter_entry, *n, *found = NULL;
 	struct hists *hists = evsel__hists(top->sym_evsel);
 	struct rb_node *next;
@@ -1227,6 +1227,14 @@ static void init_process_thread(struct perf_top *top)
 	cond_init(&top->qe.cond);
 }
 
+static void exit_process_thread(struct perf_top *top)
+{
+	ordered_events__free(&top->qe.data[0]);
+	ordered_events__free(&top->qe.data[1]);
+	mutex_destroy(&top->qe.mutex);
+	cond_destroy(&top->qe.cond);
+}
+
 static int __cmd_top(struct perf_top *top)
 {
 	struct record_opts *opts = &top->record_opts;
@@ -1357,6 +1365,7 @@ out_join_thread:
 	cond_signal(&top->qe.cond);
 	pthread_join(thread_process, NULL);
 	perf_set_singlethreaded();
+	exit_process_thread(top);
 	return ret;
 }