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- #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);
- 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);
- /*
- * 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
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