perf report: Bail out if there are unrecognized options/arguments

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>

1 files changed, 7 insertions, 1 deletions

diff --git a/Documentation/perf_counter/builtin-report.c b/Documentation/perf_counter/builtin-report.c
index 7beedc6effa4..389ae2569f49 100644
--- a/Documentation/perf_counter/builtin-report.c
+++ b/Documentation/perf_counter/builtin-report.c
@@ -1094,10 +1094,16 @@ int cmd_report(int argc, const char **argv, const char *prefix)
 
         page_size = getpagesize();
 
-        parse_options(argc, argv, options, report_usage, 0);
+        argc = parse_options(argc, argv, options, report_usage, 0);
 
         setup_sorting();
 
+        /*
+         * Any (unrecognized) arguments left?
+         */
+        if (argc)
+                usage_with_options(report_usage, options);
+
         setup_pager();
 
         return __cmd_report();