perf kmem: Print usage help for unknown commands
This patch fixes "perf kmem" to print usage help instead of
doing nothing.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
LKML-Reference: <1263921971-10782-1-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 33bb9df..93c67bf 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -784,7 +784,8 @@
setup_sorting(&alloc_sort, default_sort_order);
return __cmd_kmem();
- }
+ } else
+ usage_with_options(kmem_usage, kmem_options);
return 0;
}
