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Message-Id: <1365663302-2170-2-git-send-email-namhyung@kernel.org>
Date:	Thu, 11 Apr 2013 15:55:02 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Namhyung Kim <namhyung.kim@....com>
Subject: [PATCH 2/2] tracing: Reset ftrace_graph_filter_enabled if count is zero

From: Namhyung Kim <namhyung.kim@....com>

The ftrace_graph_count can be decreased with a "!" pattern, so that
the enabled flag should be updated too.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 kernel/trace/ftrace.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index be2bcb7ab2f7..3b5ef16692c5 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -3779,7 +3779,11 @@ out:
 	if (fail)
 		return -EINVAL;
 
-	ftrace_graph_filter_enabled = 1;
+	if (*idx)
+		ftrace_graph_filter_enabled = 1;
+	else
+		ftrace_graph_filter_enabled = 0;
+
 	return 0;
 }
 
-- 
1.7.11.7

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