From: Namhyung Kim <[email protected]>

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

Signed-off-by: Namhyung Kim <[email protected]>
---
 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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