diff options
Diffstat (limited to 'include/linux/tick.h')
| -rw-r--r-- | include/linux/tick.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/tick.h b/include/linux/tick.h index 9a7252e089b9..f4a1395e05ff 100644 --- a/include/linux/tick.h +++ b/include/linux/tick.h @@ -40,6 +40,7 @@ enum tick_nohz_mode { * @idle_sleeps: Number of idle calls, where the sched tick was stopped * @idle_entrytime: Time when the idle call was entered * @idle_sleeptime: Sum of the time slept in idle with sched tick stopped + * @sleep_length: Duration of the current idle sleep */ struct tick_sched { struct hrtimer sched_timer; @@ -52,6 +53,7 @@ struct tick_sched { unsigned long idle_sleeps; ktime_t idle_entrytime; ktime_t idle_sleeptime; + ktime_t sleep_length; unsigned long last_jiffies; unsigned long next_jiffies; ktime_t idle_expires; @@ -100,10 +102,17 @@ static inline int tick_check_oneshot_change(int allow_nohz) { return 0; } 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); # else static inline void tick_nohz_stop_sched_tick(void) { } static inline void tick_nohz_restart_sched_tick(void) { } static inline void tick_nohz_update_jiffies(void) { } +static inline ktime_t tick_nohz_get_sleep_length(void) +{ + ktime_t len = { .tv64 = NSEC_PER_SEC/HZ }; + + return len; +} # endif /* !NO_HZ */ #endif |