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tracing: Have tracing_off() actually turn tracing off 

A recent update to have tracing_on/off() only affect the ftrace ring
buffers instead of all ring buffers had a cut and paste error.
The tracing_off() did the exact same thing as tracing_on() and
would not actually turn off tracing. Unfortunately, tracing_off()
is more important to be working than tracing_on() as this is a key
development tool, as it lets the developer turn off tracing as soon
as a problem is discovered. It is also used by panic and oops code.

This bug also breaks the 'echo func:traceoff > set_ftrace_filter'

Cc: <stable@vger.kernel.org> # 3.4
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt 2012-06-06 19:50:40 -04:00 committed by Steven Rostedt
parent 5041caa4d5
commit f2bf1f6f5f
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/trace.c
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@ -371,7 +371,7 @@ EXPORT_SYMBOL_GPL(tracing_on);
void tracing_off(void) void tracing_off(void)
{ {
if (global_trace.buffer) if (global_trace.buffer)
ring_buffer_record_on(global_trace.buffer); ring_buffer_record_off(global_trace.buffer);
/* /*
* This flag is only looked at when buffers haven't been * This flag is only looked at when buffers haven't been
* allocated yet. We don't really care about the race * allocated yet. We don't really care about the race