perf_counter tools: Document '--' option parsing terminator

Signed-off-by: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 1 deletions

diff --git a/Documentation/perf_counter/builtin-record.c b/Documentation/perf_counter/builtin-record.c
index 4a068664a32..23d1224ce98 100644
--- a/Documentation/perf_counter/builtin-record.c
+++ b/Documentation/perf_counter/builtin-record.c
@@ -397,7 +397,8 @@ static int __cmd_record(int argc, const char **argv)
 }
 
 static const char * const record_usage[] = {
-        "perf record [<options>] <command>",
+        "perf record [<options>] [<command>]",
+        "perf record [<options>] -- <command> [<options>]",
         NULL
 };