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 #define DEFINE_TIMER(_name, _function, _expires, _data) \
36 struct timer_list _name = \
37 TIMER_INITIALIZER(_function, _expires, _data)
39 void fastcall init_timer(struct timer_list * timer);
42 * timer_pending - is a timer pending?
43 * @timer: the timer in question
45 * timer_pending will tell whether a given timer is currently pending,
46 * or not. Callers must ensure serialization wrt. other operations done
47 * to this timer, eg. interrupt contexts, or other CPUs on SMP.
49 * return value: 1 if the timer is pending, 0 if not.
51 static inline int timer_pending(const struct timer_list * timer)
53 return timer->entry.next != NULL;
56 extern void add_timer_on(struct timer_list *timer, int cpu);
57 extern int del_timer(struct timer_list * timer);
58 extern int __mod_timer(struct timer_list *timer, unsigned long expires);
59 extern int mod_timer(struct timer_list *timer, unsigned long expires);
61 extern unsigned long next_timer_interrupt(void);
64 * add_timer - start a timer
65 * @timer: the timer to be added
67 * The kernel will do a ->function(->data) callback from the
68 * timer interrupt at the ->expired point in the future. The
69 * current time is 'jiffies'.
71 * The timer's ->expired, ->function (and if the handler uses it, ->data)
72 * fields must be set prior calling this function.
74 * Timers with an ->expired field in the past will be executed in the next
77 static inline void add_timer(struct timer_list * timer)
79 __mod_timer(timer, timer->expires);
83 extern int try_to_del_timer_sync(struct timer_list *timer);
84 extern int del_timer_sync(struct timer_list *timer);
86 # define try_to_del_timer_sync(t) del_timer(t)
87 # define del_timer_sync(t) del_timer(t)
90 #define del_singleshot_timer_sync(t) del_timer_sync(t)
92 extern void init_timers(void);
93 extern void run_local_timers(void);
94 extern void it_real_fn(unsigned long);