3.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Namhyung Kim <[email protected]>

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/[email protected]

Signed-off-by: Namhyung Kim <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Namhyung Kim <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 kernel/trace/ftrace.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -3736,7 +3736,8 @@ out:
        if (fail)
                return -EINVAL;
 
-       ftrace_graph_filter_enabled = 1;
+       ftrace_graph_filter_enabled = !!(*idx);
+
        return 0;
 }
 


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