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tracing: Reset ftrace_graph_filter_enabled if count is zero

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commit 9f50afccfd 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

Signed-off-by: Namhyung Kim <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: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Namhyung Kim
2013-05-07 20:33:08 -07:00
committed by Greg Kroah-Hartman
parent c8a6694f33
commit a8bbee2c40
1 changed files with 2 additions and 1 deletions
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kernel/trace/ftrace.c
+2 -1
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@@ -3736,7 +3736,8 @@ out:
if (fail)
return -EINVAL;
ftrace_graph_filter_enabled = 1;
ftrace_graph_filter_enabled = !!(*idx);
return 0;
}