#ifndef _TICK_SCHED_H #define _TICK_SCHED_H #include enum tick_device_mode { TICKDEV_MODE_PERIODIC, TICKDEV_MODE_ONESHOT, }; struct tick_device { struct clock_event_device *evtdev; enum tick_device_mode mode; }; enum tick_nohz_mode { NOHZ_MODE_INACTIVE, NOHZ_MODE_LOWRES, NOHZ_MODE_HIGHRES, }; /** * struct tick_sched - sched tick emulation and no idle tick control/stats * @sched_timer: hrtimer to schedule the periodic tick in high * resolution mode * @last_tick: Store the last tick expiry time when the tick * timer is modified for nohz sleeps. This is necessary * to resume the tick timer operation in the timeline * when the CPU returns from nohz sleep. * @next_tick: Next tick to be fired when in dynticks mode. * @tick_stopped: Indicator that the idle tick has been stopped * @idle_jiffies: jiffies at the entry to idle for idle time accounting * @idle_calls: Total number of idle calls * @idle_sleeps: Number of idle calls, where the sched tick was stopped * @idle_entrytime: Time when the idle call was entered * @idle_waketime: Time when the idle was interrupted * @idle_exittime: Time when the idle state was left * @idle_sleeptime: Sum of the time slept in idle with sched tick stopped * @iowait_sleeptime: Sum of the time slept in idle with sched tick stopped, with IO outstanding * @sleep_length: Duration of the current idle sleep * @do_timer_lst: CPU was the last one doing do_timer before going idle */ struct tick_sched { struct hrtimer sched_timer; unsigned long check_clocks; enum tick_nohz_mode nohz_mode; ktime_t last_tick; ktime_t next_tick; int inidle; int tick_stopped; unsigned long idle_jiffies; unsigned long idle_calls; unsigned long idle_sleeps; int idle_active; ktime_t idle_entrytime; ktime_t idle_waketime; ktime_t idle_exittime; ktime_t idle_sleeptime; ktime_t iowait_sleeptime; ktime_t sleep_length; unsigned long last_jiffies; u64 next_timer; ktime_t idle_expires; int do_timer_last; atomic_t tick_dep_mask; }; extern struct tick_sched *tick_get_tick_sched(int cpu); extern void tick_setup_sched_timer(void); #if defined CONFIG_NO_HZ_COMMON || defined CONFIG_HIGH_RES_TIMERS extern void tick_cancel_sched_timer(int cpu); #else static inline void tick_cancel_sched_timer(int cpu) { } #endif #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST extern int __tick_broadcast_oneshot_control(enum tick_broadcast_state state); #else static inline int __tick_broadcast_oneshot_control(enum tick_broadcast_state state) { return -EBUSY; } #endif #endif ion value='committer'>committer

path: root/tools/perf/builtin-help.c

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