time: track accurate idle time with tick_sched.idle_sleeptime

[safe/jmp/linux-2.6] / include / linux / tick.h

diff --git a/include/linux/tick.h b/include/linux/tick.h
index f4a1395..0fadf95 100644 (file)
--- a/include/linux/tick.h
+++ b/include/linux/tick.h
@@ -51,8 +51,10 @@ struct tick_sched {
        unsigned long                   idle_jiffies;
        unsigned long                   idle_calls;
        unsigned long                   idle_sleeps;
+       int                             idle_active;
        ktime_t                         idle_entrytime;
        ktime_t                         idle_sleeptime;
+       ktime_t                         idle_lastupdate;
        ktime_t                         sleep_length;
        unsigned long                   last_jiffies;
        unsigned long                   next_jiffies;
@@ -103,6 +105,8 @@ extern void tick_nohz_stop_sched_tick(void);
 extern void tick_nohz_restart_sched_tick(void);
 extern void tick_nohz_update_jiffies(void);
 extern ktime_t tick_nohz_get_sleep_length(void);
+extern void tick_nohz_stop_idle(int cpu);
+extern u64 get_cpu_idle_time_us(int cpu, u64 *last_update_time);
 # else
 static inline void tick_nohz_stop_sched_tick(void) { }
 static inline void tick_nohz_restart_sched_tick(void) { }
@@ -113,6 +117,8 @@ static inline ktime_t tick_nohz_get_sleep_length(void)
 
        return len;
 }
+static inline void tick_nohz_stop_idle(int cpu) { }
+static inline u64 get_cpu_idle_time_us(int cpu, u64 *unused) { return 0; }
 # endif /* !NO_HZ */
 
 #endif