diff --git a/[refs] b/[refs]
index 33a0703f4bf3..61fa58389c33 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b098161b4d0231f7dc5306111d576c0bfe0c8eba
+refs/heads/master: 65a67bd2644bef225ee318dde76016a4697218fa
diff --git a/trunk/Documentation/accounting/getdelays.c b/trunk/Documentation/accounting/getdelays.c
index cc49400b4af8..7ea231172c85 100644
--- a/trunk/Documentation/accounting/getdelays.c
+++ b/trunk/Documentation/accounting/getdelays.c
@@ -392,6 +392,10 @@ int main(int argc, char *argv[])
 			goto err;
 		}
 	}
+	if (!maskset && !tid && !containerset) {
+		usage();
+		goto err;
+	}
 
 	do {
 		int i;