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tracing: do not update tracing_max_latency when tracer is stopped

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The state of the function pair tracing_stop()/tracing_start() is
correctly considered when tracer data are updated. However, the global
and externally accessible variable tracing_max_latency is always updated
- even when tracing is stopped.

The update should only occur, if tracing was not stopped.

Signed-off-by: Carsten Emde <C.Emde@osadl.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Carsten Emde
2009-09-13 01:43:07 +02:00
committed by Steven Rostedt
parent 41dfba4367
commit b5130b1e7d
4 changed files with 14 additions and 4 deletions
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kernel/trace/trace.h
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@@ -461,6 +461,7 @@ void tracing_stop_sched_switch_record(void);
void tracing_start_sched_switch_record(void);
int register_tracer(struct tracer *type);
void unregister_tracer(struct tracer *type);
int is_tracing_stopped(void);
extern unsigned long nsecs_to_usecs(unsigned long nsecs);