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-rw-r--r--Documentation/perf_counter/builtin-report.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/perf_counter/builtin-report.c b/Documentation/perf_counter/builtin-report.c
index 19c1e056bb66..6d68f3aa86b7 100644
--- a/Documentation/perf_counter/builtin-report.c
+++ b/Documentation/perf_counter/builtin-report.c
@@ -612,6 +612,17 @@ static size_t output__fprintf(FILE *fp, uint64_t total_samples)
return ret;
}
+static void register_idle_thread(void)
+{
+ struct thread *thread = threads__findnew(0);
+
+ if (thread == NULL ||
+ thread__set_comm(thread, "[idle]")) {
+ fprintf(stderr, "problem inserting idle task.\n");
+ exit(-1);
+ }
+}
+
static int __cmd_report(void)
{
@@ -626,6 +637,8 @@ static int __cmd_report(void)
char cwd[PATH_MAX], *cwdp = cwd;
int cwdlen;
+ register_idle_thread();
+
input = open(input_name, O_RDONLY);
if (input < 0) {
perror("failed to open file");