[PATCH] perf list: fix --raw-dump

[Ramkumar Ramachandra <artagnon@gmail.com>]

While adding usage information, 44d742e (perf list: Add usage,
2013-10-30) broke

  $ perf list --raw-dump

by asking parse_options() to stop at
non-option (PARSE_OPT_STOP_AT_NON_OPTION), hence parsing the option
--raw-dump and barfing. Ask it to keep unknown options
unparsed (PARSE_OPT_KEEP_UNKNOWN) so that we have a chance to handle it
later. The trade-off that this patch makes is that

  $ perf list --foo

will not error out like it used to.

Fixes: 44d742e01e6d (perf list: Add usage)
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
---
 I spotted this while trying to complete

   $ perf record -e <TAB>

 tools/perf/builtin-list.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c
index 011195e..8b076f3 100644
--- a/tools/perf/builtin-list.c
+++ b/tools/perf/builtin-list.c
@@ -28,7 +28,7 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
 	};
 
 	argc = parse_options(argc, argv, list_options, list_usage,
-			     PARSE_OPT_STOP_AT_NON_OPTION);
+			PARSE_OPT_KEEP_UNKNOWN);
 
 	setup_pager();
 
-- 
1.8.5.rc0.5.g70ebc73.dirty