perf stat: Handle pipe read failures in perf stat

[pandora-kernel.git] / tools / perf / builtin-stat.c

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 01cc07e..27921a8 100644 (file)
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -239,7 +239,8 @@ static int run_perf_stat(int argc __used, const char **argv)
                /*
                 * Wait until the parent tells us to go.
                 */
-               read(go_pipe[0], &buf, 1);
+               if (read(go_pipe[0], &buf, 1) == -1)
+                       perror("unable to read pipe");
 
                execvp(argv[0], (char **)argv);
 
@@ -252,7 +253,8 @@ static int run_perf_stat(int argc __used, const char **argv)
         */
        close(child_ready_pipe[1]);
        close(go_pipe[0]);
-       read(child_ready_pipe[0], &buf, 1);
+       if (read(child_ready_pipe[0], &buf, 1) == -1)
+               perror("unable to read pipe");
        close(child_ready_pipe[0]);
 
        for (counter = 0; counter < nr_counters; counter++)