4 #include <linux/config.h>
5 #include <linux/list.h>
6 #include <linux/spinlock.h>
7 #include <linux/stddef.h>
12 struct list_head entry;
13 unsigned long expires;
17 void (*function)(unsigned long);
20 struct timer_base_s *base;
23 #define TIMER_MAGIC 0x4b87ad6e
25 extern struct timer_base_s __init_timer_base;
27 #define TIMER_INITIALIZER(_function, _expires, _data) { \
28 .function = (_function), \
29 .expires = (_expires), \
31 .base = &__init_timer_base, \
32 .magic = TIMER_MAGIC, \
35 void fastcall init_timer(struct timer_list * timer);
38 * timer_pending - is a timer pending?
39 * @timer: the timer in question
41 * timer_pending will tell whether a given timer is currently pending,
42 * or not. Callers must ensure serialization wrt. other operations done
43 * to this timer, eg. interrupt contexts, or other CPUs on SMP.
45 * return value: 1 if the timer is pending, 0 if not.
47 static inline int timer_pending(const struct timer_list * timer)
49 return timer->entry.next != NULL;
52 extern void add_timer_on(struct timer_list *timer, int cpu);
53 extern int del_timer(struct timer_list * timer);
54 extern int __mod_timer(struct timer_list *timer, unsigned long expires);
55 extern int mod_timer(struct timer_list *timer, unsigned long expires);
57 extern unsigned long next_timer_interrupt(void);
60 * add_timer - start a timer
61 * @timer: the timer to be added
63 * The kernel will do a ->function(->data) callback from the
64 * timer interrupt at the ->expired point in the future. The
65 * current time is 'jiffies'.
67 * The timer's ->expired, ->function (and if the handler uses it, ->data)
68 * fields must be set prior calling this function.
70 * Timers with an ->expired field in the past will be executed in the next
73 static inline void add_timer(struct timer_list * timer)
75 __mod_timer(timer, timer->expires);
79 extern int try_to_del_timer_sync(struct timer_list *timer);
80 extern int del_timer_sync(struct timer_list *timer);
82 # define try_to_del_timer_sync(t) del_timer(t)
83 # define del_timer_sync(t) del_timer(t)
86 #define del_singleshot_timer_sync(t) del_timer_sync(t)
88 extern void init_timers(void);
89 extern void run_local_timers(void);
90 extern void it_real_fn(unsigned long);