| #ifndef _LINUX_TIMER_H |
| #define _LINUX_TIMER_H |
| |
| #include <linux/list.h> |
| #include <linux/ktime.h> |
| #include <linux/spinlock.h> |
| #include <linux/stddef.h> |
| |
| struct tvec_t_base_s; |
| |
| struct timer_list { |
| struct list_head entry; |
| unsigned long expires; |
| |
| void (*function)(unsigned long); |
| unsigned long data; |
| |
| struct tvec_t_base_s *base; |
| #ifdef CONFIG_TIMER_STATS |
| void *start_site; |
| char start_comm[16]; |
| int start_pid; |
| #endif |
| }; |
| |
| extern struct tvec_t_base_s boot_tvec_bases; |
| |
| #define TIMER_INITIALIZER(_function, _expires, _data) { \ |
| .function = (_function), \ |
| .expires = (_expires), \ |
| .data = (_data), \ |
| .base = &boot_tvec_bases, \ |
| } |
| |
| #define DEFINE_TIMER(_name, _function, _expires, _data) \ |
| struct timer_list _name = \ |
| TIMER_INITIALIZER(_function, _expires, _data) |
| |
| void fastcall init_timer(struct timer_list * timer); |
| void fastcall init_timer_deferrable(struct timer_list *timer); |
| |
| static inline void setup_timer(struct timer_list * timer, |
| void (*function)(unsigned long), |
| unsigned long data) |
| { |
| timer->function = function; |
| timer->data = data; |
| init_timer(timer); |
| } |
| |
| /** |
| * timer_pending - is a timer pending? |
| * @timer: the timer in question |
| * |
| * timer_pending will tell whether a given timer is currently pending, |
| * or not. Callers must ensure serialization wrt. other operations done |
| * to this timer, eg. interrupt contexts, or other CPUs on SMP. |
| * |
| * return value: 1 if the timer is pending, 0 if not. |
| */ |
| static inline int timer_pending(const struct timer_list * timer) |
| { |
| return timer->entry.next != NULL; |
| } |
| |
| extern void add_timer_on(struct timer_list *timer, int cpu); |
| extern int del_timer(struct timer_list * timer); |
| extern int __mod_timer(struct timer_list *timer, unsigned long expires); |
| extern int mod_timer(struct timer_list *timer, unsigned long expires); |
| |
| /* |
| * The jiffies value which is added to now, when there is no timer |
| * in the timer wheel: |
| */ |
| #define NEXT_TIMER_MAX_DELTA ((1UL << 30) - 1) |
| |
| /* |
| * Return when the next timer-wheel timeout occurs (in absolute jiffies), |
| * locks the timer base: |
| */ |
| extern unsigned long next_timer_interrupt(void); |
| /* |
| * Return when the next timer-wheel timeout occurs (in absolute jiffies), |
| * locks the timer base and does the comparison against the given |
| * jiffie. |
| */ |
| extern unsigned long get_next_timer_interrupt(unsigned long now); |
| |
| /* |
| * Timer-statistics info: |
| */ |
| #ifdef CONFIG_TIMER_STATS |
| |
| extern void init_timer_stats(void); |
| |
| extern void timer_stats_update_stats(void *timer, pid_t pid, void *startf, |
| void *timerf, char * comm); |
| |
| static inline void timer_stats_account_timer(struct timer_list *timer) |
| { |
| timer_stats_update_stats(timer, timer->start_pid, timer->start_site, |
| timer->function, timer->start_comm); |
| } |
| |
| extern void __timer_stats_timer_set_start_info(struct timer_list *timer, |
| void *addr); |
| |
| static inline void timer_stats_timer_set_start_info(struct timer_list *timer) |
| { |
| __timer_stats_timer_set_start_info(timer, __builtin_return_address(0)); |
| } |
| |
| static inline void timer_stats_timer_clear_start_info(struct timer_list *timer) |
| { |
| timer->start_site = NULL; |
| } |
| #else |
| static inline void init_timer_stats(void) |
| { |
| } |
| |
| static inline void timer_stats_account_timer(struct timer_list *timer) |
| { |
| } |
| |
| static inline void timer_stats_timer_set_start_info(struct timer_list *timer) |
| { |
| } |
| |
| static inline void timer_stats_timer_clear_start_info(struct timer_list *timer) |
| { |
| } |
| #endif |
| |
| extern void delayed_work_timer_fn(unsigned long __data); |
| |
| /** |
| * add_timer - start a timer |
| * @timer: the timer to be added |
| * |
| * The kernel will do a ->function(->data) callback from the |
| * timer interrupt at the ->expires point in the future. The |
| * current time is 'jiffies'. |
| * |
| * The timer's ->expires, ->function (and if the handler uses it, ->data) |
| * fields must be set prior calling this function. |
| * |
| * Timers with an ->expires field in the past will be executed in the next |
| * timer tick. |
| */ |
| static inline void add_timer(struct timer_list *timer) |
| { |
| BUG_ON(timer_pending(timer)); |
| __mod_timer(timer, timer->expires); |
| } |
| |
| #ifdef CONFIG_SMP |
| extern int try_to_del_timer_sync(struct timer_list *timer); |
| extern int del_timer_sync(struct timer_list *timer); |
| #else |
| # define try_to_del_timer_sync(t) del_timer(t) |
| # define del_timer_sync(t) del_timer(t) |
| #endif |
| |
| #define del_singleshot_timer_sync(t) del_timer_sync(t) |
| |
| extern void init_timers(void); |
| extern void run_local_timers(void); |
| struct hrtimer; |
| extern enum hrtimer_restart it_real_fn(struct hrtimer *); |
| |
| unsigned long __round_jiffies(unsigned long j, int cpu); |
| unsigned long __round_jiffies_relative(unsigned long j, int cpu); |
| unsigned long round_jiffies(unsigned long j); |
| unsigned long round_jiffies_relative(unsigned long j); |
| |
| |
| #endif |