include/trace/power.h

   1 #ifndef _TRACE_POWER_H
   2 #define _TRACE_POWER_H
   3
   4 #include <linux/ktime.h>
   5
   6 enum {
   7         POWER_NONE = 0,
   8         POWER_CSTATE = 1,
   9         POWER_PSTATE = 2,
  10 };
  11
  12 struct power_trace {
  13 #ifdef CONFIG_POWER_TRACER
  14         ktime_t                 stamp;
  15         ktime_t                 end;
  16         int                     type;
  17         int                     state;
  18 #endif
  19 };
  20
  21 #ifdef CONFIG_POWER_TRACER
  22 extern void trace_power_start(struct power_trace *it, unsigned int type,
  23                                         unsigned int state);
  24 extern void trace_power_mark(struct power_trace *it, unsigned int type,
  25                                         unsigned int state);
  26 extern void trace_power_end(struct power_trace *it);
  27 #else
  28 static inline void trace_power_start(struct power_trace *it, unsigned int type,
  29                                         unsigned int state) { }
  30 static inline void trace_power_mark(struct power_trace *it, unsigned int type,
  31                                         unsigned int state) { }
  32 static inline void trace_power_end(struct power_trace *it) { }
  33 #endif
  34
  35 #endif /* _TRACE_POWER_H */