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tracing: convert c/p state power tracer to use tracepoints

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Convert the c/p state "power" tracer to use tracepoints. Avoids a
function call when the tracer is disabled.

Signed-off-by: Jason Baron <jbaron@redhat.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
This commit is contained in:
Jason Baron
2009-02-11 13:57:25 -05:00
committed by Steven Rostedt
parent 45141d4667
commit b5f9fd0f8a
4 changed files with 119 additions and 84 deletions
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25
include/trace/power.h
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@@ -2,6 +2,7 @@
#define _TRACE_POWER_H
#include <linux/ktime.h>
#include <linux/tracepoint.h>
enum {
POWER_NONE = 0,
@@ -18,18 +19,16 @@ struct power_trace {
#endif
};
#ifdef CONFIG_POWER_TRACER
extern void trace_power_start(struct power_trace *it, unsigned int type,
unsigned int state);
extern void trace_power_mark(struct power_trace *it, unsigned int type,
unsigned int state);
extern void trace_power_end(struct power_trace *it);
#else
static inline void trace_power_start(struct power_trace *it, unsigned int type,
unsigned int state) { }
static inline void trace_power_mark(struct power_trace *it, unsigned int type,
unsigned int state) { }
static inline void trace_power_end(struct power_trace *it) { }
#endif
DECLARE_TRACE(power_start,
TPPROTO(struct power_trace *it, unsigned int type, unsigned int state),
TPARGS(it, type, state));
DECLARE_TRACE(power_mark,
TPPROTO(struct power_trace *it, unsigned int type, unsigned int state),
TPARGS(it, type, state));
DECLARE_TRACE(power_end,
TPPROTO(struct power_trace *it),
TPARGS(it));
#endif /* _TRACE_POWER_H */