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| author | Wu Fengguang <fengguang.wu@intel.com> | 2009-03-20 10:08:10 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-06 09:30:24 +0200 |
| commit | af9522cf133e9be6da8525a46a9ed7e7659f0e1a (patch) | |
| tree | 51e40129c2eade735f224e7b9bcb6eb0fba529df | |
| parent | dda7c02f33833bfa9412ba6f0e410b0a18b42c88 (diff) | |
perf_counter tools: when no command is feed to perfstat, display help and exit
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -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: */ |