X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Fhrtimer.h;h=d93b1e1dc1699d77c0008fd276d11bd30157f195;hb=2e94d1f71f7e4404d997e6fb4f1618aa147d76f9;hp=1ad56a7b2f744d3b78a201224303d8b71c6e8780;hpb=0a3abcf75bf391fec4e32356ab5ddb8f5d2e6b41;p=linux-2.6-omap-h63xx.git diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index 1ad56a7b2f7..d93b1e1dc16 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -111,7 +111,8 @@ enum hrtimer_cb_mode { */ struct hrtimer { struct rb_node node; - ktime_t expires; + ktime_t _expires; + ktime_t _softexpires; enum hrtimer_restart (*function)(struct hrtimer *); struct hrtimer_clock_base *base; unsigned long state; @@ -173,7 +174,6 @@ struct hrtimer_clock_base { * struct hrtimer_cpu_base - the per cpu clock bases * @lock: lock protecting the base and associated clock bases * and timers - * @lock_key: the lock_class_key for use with lockdep * @clock_base: array of clock bases for this cpu * @curr_timer: the timer which is executing a callback right now * @expires_next: absolute time of the next event which was scheduled @@ -189,7 +189,6 @@ struct hrtimer_clock_base { */ struct hrtimer_cpu_base { spinlock_t lock; - struct lock_class_key lock_key; struct hrtimer_clock_base clock_base[HRTIMER_MAX_CLOCK_BASES]; struct list_head cb_pending; #ifdef CONFIG_HIGH_RES_TIMERS @@ -199,6 +198,71 @@ struct hrtimer_cpu_base { #endif }; +static inline void hrtimer_set_expires(struct hrtimer *timer, ktime_t time) +{ + timer->_expires = time; + timer->_softexpires = time; +} + +static inline void hrtimer_set_expires_range(struct hrtimer *timer, ktime_t time, ktime_t delta) +{ + timer->_softexpires = time; + timer->_expires = ktime_add_safe(time, delta); +} + +static inline void hrtimer_set_expires_range_ns(struct hrtimer *timer, ktime_t time, unsigned long delta) +{ + timer->_softexpires = time; + timer->_expires = ktime_add_safe(time, ns_to_ktime(delta)); +} + +static inline void hrtimer_set_expires_tv64(struct hrtimer *timer, s64 tv64) +{ + timer->_expires.tv64 = tv64; + timer->_softexpires.tv64 = tv64; +} + +static inline void hrtimer_add_expires(struct hrtimer *timer, ktime_t time) +{ + timer->_expires = ktime_add_safe(timer->_expires, time); + timer->_softexpires = ktime_add_safe(timer->_softexpires, time); +} + +static inline void hrtimer_add_expires_ns(struct hrtimer *timer, unsigned long ns) +{ + timer->_expires = ktime_add_ns(timer->_expires, ns); + timer->_softexpires = ktime_add_ns(timer->_softexpires, ns); +} + +static inline ktime_t hrtimer_get_expires(const struct hrtimer *timer) +{ + return timer->_expires; +} + +static inline ktime_t hrtimer_get_softexpires(const struct hrtimer *timer) +{ + return timer->_softexpires; +} + +static inline s64 hrtimer_get_expires_tv64(const struct hrtimer *timer) +{ + return timer->_expires.tv64; +} +static inline s64 hrtimer_get_softexpires_tv64(const struct hrtimer *timer) +{ + return timer->_softexpires.tv64; +} + +static inline s64 hrtimer_get_expires_ns(const struct hrtimer *timer) +{ + return ktime_to_ns(timer->_expires); +} + +static inline ktime_t hrtimer_expires_remaining(const struct hrtimer *timer) +{ + return ktime_sub(timer->_expires, timer->base->get_time()); +} + #ifdef CONFIG_HIGH_RES_TIMERS struct clock_event_device; @@ -262,21 +326,54 @@ static inline int hrtimer_is_hres_active(struct hrtimer *timer) extern ktime_t ktime_get(void); extern ktime_t ktime_get_real(void); + +DECLARE_PER_CPU(struct tick_device, tick_cpu_device); +extern void hrtimer_peek_ahead_timers(void); + + /* Exported timer functions: */ /* Initialize timers: */ extern void hrtimer_init(struct hrtimer *timer, clockid_t which_clock, enum hrtimer_mode mode); +#ifdef CONFIG_DEBUG_OBJECTS_TIMERS +extern void hrtimer_init_on_stack(struct hrtimer *timer, clockid_t which_clock, + enum hrtimer_mode mode); + +extern void destroy_hrtimer_on_stack(struct hrtimer *timer); +#else +static inline void hrtimer_init_on_stack(struct hrtimer *timer, + clockid_t which_clock, + enum hrtimer_mode mode) +{ + hrtimer_init(timer, which_clock, mode); +} +static inline void destroy_hrtimer_on_stack(struct hrtimer *timer) { } +#endif + /* Basic timer operations: */ extern int hrtimer_start(struct hrtimer *timer, ktime_t tim, const enum hrtimer_mode mode); +extern int hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim, + unsigned long range_ns, const enum hrtimer_mode mode); extern int hrtimer_cancel(struct hrtimer *timer); extern int hrtimer_try_to_cancel(struct hrtimer *timer); +static inline int hrtimer_start_expires(struct hrtimer *timer, + enum hrtimer_mode mode) +{ + unsigned long delta; + ktime_t soft, hard; + soft = hrtimer_get_softexpires(timer); + hard = hrtimer_get_expires(timer); + delta = ktime_to_ns(ktime_sub(hard, soft)); + return hrtimer_start_range_ns(timer, soft, delta, mode); +} + static inline int hrtimer_restart(struct hrtimer *timer) { - return hrtimer_start(timer, timer->expires, HRTIMER_MODE_ABS); + return hrtimer_start_expires(timer, HRTIMER_MODE_ABS); } /* Query timers: */ @@ -303,6 +400,15 @@ static inline int hrtimer_is_queued(struct hrtimer *timer) (HRTIMER_STATE_ENQUEUED | HRTIMER_STATE_PENDING); } +/* + * Helper function to check, whether the timer is running the callback + * function + */ +static inline int hrtimer_callback_running(struct hrtimer *timer) +{ + return timer->state & HRTIMER_STATE_CALLBACK; +} + /* Forward a hrtimer so it expires after now: */ extern u64 hrtimer_forward(struct hrtimer *timer, ktime_t now, ktime_t interval); @@ -324,6 +430,10 @@ extern long hrtimer_nanosleep_restart(struct restart_block *restart_block); extern void hrtimer_init_sleeper(struct hrtimer_sleeper *sl, struct task_struct *tsk); +extern int schedule_hrtimeout_range(ktime_t *expires, unsigned long delta, + const enum hrtimer_mode mode); +extern int schedule_hrtimeout(ktime_t *expires, const enum hrtimer_mode mode); + /* Soft interrupt function to run the hrtimer queues: */ extern void hrtimer_run_queues(void); extern void hrtimer_run_pending(void);