[PATCH 3/4] trace: stop all recording to ring buffer on ftrace_dump

[Steven Rostedt]

From: Steven Rostedt <srostedt@xxxxxxxxxx>

Impact: clean up to prevent more output in ftrace dump than needed

Currently ftrace_dump only calls ftrace_kill that is a fast way
to prevent the function tracer functions from being called (just sets
a flag and clears the function to call, nothing else). It is better
to also turn off any recording to the ring buffers as well.

Signed-off-by: Steven Rostedt <srostedt@xxxxxxxxxx>
---
 kernel/trace/trace.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 408c03f..dcb757f 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -3110,6 +3110,7 @@ void ftrace_dump(void)
 	dump_ran = 1;
 
 	/* No turning back! */
+	tracing_off();
 	ftrace_kill();
 
 	for_each_tracing_cpu(cpu) {
-- 
1.5.6.5

-- 
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