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

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>

1 files changed, 12 insertions, 13 deletions

diff --git a/include/trace/power.h b/include/trace/power.h
index c7cefbcdaea4..2c733e58e89c 100644
--- a/include/trace/power.h
+++ b/include/trace/power.h
@@ -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 */