perf_counter tools: Uniform help printouts

Also add perf list to command-list.txt.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/Documentation/perf_counter/perf.c b/Documentation/perf_counter/perf.c
index 9ac7565..161824f 100644
--- a/Documentation/perf_counter/perf.c
+++ b/Documentation/perf_counter/perf.c
@@ -384,9 +384,9 @@
 			argv[0] += 2;
 	} else {
 		/* The user didn't specify a command; give them help */
-		printf("usage: %s\n\n", perf_usage_string);
+		printf("\n usage: %s\n\n", perf_usage_string);
 		list_common_cmds_help();
-		printf("\n%s\n", perf_more_info_string);
+		printf("\n %s\n\n", perf_more_info_string);
 		exit(1);
 	}
 	cmd = argv[0];