diff options
| -rw-r--r-- | Documentation/perf_counter/kerneltop.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/perf_counter/kerneltop.c b/Documentation/perf_counter/kerneltop.c index 0bd3c13150b..81a68aac137 100644 --- a/Documentation/perf_counter/kerneltop.c +++ b/Documentation/perf_counter/kerneltop.c @@ -387,6 +387,9 @@ int do_perfstat(int argc, char *argv[]) argc -= optind; argv += optind; + if (!argc) + display_help(); + /* * Enable counters and exec the command: */ |