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-rw-r--r--tools/perf/builtin-trace.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index dd3c2e7c9a1..8247fd04745 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -164,6 +164,7 @@ static int __cmd_trace(void)
char *buf;
trace_report();
+ register_idle_thread(&threads, &last_match);
input = open(input_name, O_RDONLY);
if (input < 0) {