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trace: stop all recording to ring buffer on ftrace_dump

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Impact: limit ftrace dump output

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@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Steven Rostedt 2009-01-14 14:50:19 -05:00 committed by Ingo Molnar
parent faf6861ebd
commit a442e5e0a2
1 changed files with 1 additions and 0 deletions
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kernel/trace/trace.c
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@ -3770,6 +3770,7 @@ void ftrace_dump(void)
dump_ran = 1; dump_ran = 1;
/* No turning back! */ /* No turning back! */
tracing_off();
ftrace_kill(); ftrace_kill();
for_each_tracing_cpu(cpu) { for_each_tracing_cpu(cpu) {