| From: Namhyung Kim <namhyung.kim@lge.com> |
| Date: Thu, 11 Apr 2013 16:01:38 +0900 |
| Subject: tracing: Reset ftrace_graph_filter_enabled if count is zero |
| |
| commit 9f50afccfdc15d95d7331acddcb0f7703df089ae upstream. |
| |
| The ftrace_graph_count can be decreased with a "!" pattern, so that |
| the enabled flag should be updated too. |
| |
| Link: http://lkml.kernel.org/r/1365663698-2413-1-git-send-email-namhyung@kernel.org |
| |
| Cc: Frederic Weisbecker <fweisbec@gmail.com> |
| Cc: Ingo Molnar <mingo@kernel.org> |
| Cc: Namhyung Kim <namhyung.kim@lge.com> |
| Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
| Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
| Signed-off-by: Ben Hutchings <ben@decadent.org.uk> |
| --- |
| kernel/trace/ftrace.c | 3 ++- |
| 1 file changed, 2 insertions(+), 1 deletion(-) |
| |
| --- a/kernel/trace/ftrace.c |
| +++ b/kernel/trace/ftrace.c |
| @@ -3303,7 +3303,8 @@ out: |
| if (fail) |
| return -EINVAL; |
| |
| - ftrace_graph_filter_enabled = 1; |
| + ftrace_graph_filter_enabled = !!(*idx); |
| + |
| return 0; |
| } |
| |
