1 files changed, 7 insertions, 3 deletions

diff --git a/tools/perf/bench/sched-pipe.c b/tools/perf/bench/sched-pipe.c
index 3214ed20b1aa..6a29100e9282 100644
--- a/tools/perf/bench/sched-pipe.c
+++ b/tools/perf/bench/sched-pipe.c
@@ -26,6 +26,7 @@
 #include <errno.h>
 #include <assert.h>
 #include <sys/time.h>
+#include <sys/types.h>
 
 #define LOOPS_DEFAULT 1000000
 static int loops = LOOPS_DEFAULT;
@@ -58,8 +59,8 @@ int bench_sched_pipe(int argc, const char **argv,
          * discarding returned value of read(), write()
          * causes error in building environment for perf
          */
-        int ret;
-        pid_t pid;
+        int ret, wait_stat;
+        pid_t pid, retpid;
 
         argc = parse_options(argc, argv, options,
                              bench_sched_pipe_usage, 0);
@@ -87,8 +88,11 @@ int bench_sched_pipe(int argc, const char **argv,
         gettimeofday(&stop, NULL);
         timersub(&stop, &start, &diff);
 
-        if (pid)
+        if (pid) {
+                retpid = waitpid(pid, &wait_stat, 0);
+                assert((retpid == pid) && WIFEXITED(wait_stat));
                 return 0;
+        }
 
         if (simple)
                 printf("%lu.%03lu\n",