4 #include <linux/list.h>
5 #include <linux/spinlock.h>
6 #include <linux/stddef.h>
11 struct list_head entry;
12 unsigned long expires;
14 void (*function)(unsigned long);
17 struct tvec_t_base_s *base;
20 extern struct tvec_t_base_s boot_tvec_bases;
22 #define TIMER_INITIALIZER(_function, _expires, _data) { \
23 .function = (_function), \
24 .expires = (_expires), \
26 .base = &boot_tvec_bases, \
29 #define DEFINE_TIMER(_name, _function, _expires, _data) \
30 struct timer_list _name = \
31 TIMER_INITIALIZER(_function, _expires, _data)
33 void fastcall init_timer(struct timer_list * timer);
35 static inline void setup_timer(struct timer_list * timer,
36 void (*function)(unsigned long),
39 timer->function = function;
45 * timer_pending - is a timer pending?
46 * @timer: the timer in question
48 * timer_pending will tell whether a given timer is currently pending,
49 * or not. Callers must ensure serialization wrt. other operations done
50 * to this timer, eg. interrupt contexts, or other CPUs on SMP.
52 * return value: 1 if the timer is pending, 0 if not.
54 static inline int timer_pending(const struct timer_list * timer)
56 return timer->entry.next != NULL;
59 extern void add_timer_on(struct timer_list *timer, int cpu);
60 extern int del_timer(struct timer_list * timer);
61 extern int __mod_timer(struct timer_list *timer, unsigned long expires);
62 extern int mod_timer(struct timer_list *timer, unsigned long expires);
64 extern unsigned long next_timer_interrupt(void);
67 * add_timer - start a timer
68 * @timer: the timer to be added
70 * The kernel will do a ->function(->data) callback from the
71 * timer interrupt at the ->expires point in the future. The
72 * current time is 'jiffies'.
74 * The timer's ->expires, ->function (and if the handler uses it, ->data)
75 * fields must be set prior calling this function.
77 * Timers with an ->expires field in the past will be executed in the next
80 static inline void add_timer(struct timer_list *timer)
82 BUG_ON(timer_pending(timer));
83 __mod_timer(timer, timer->expires);
87 extern int try_to_del_timer_sync(struct timer_list *timer);
88 extern int del_timer_sync(struct timer_list *timer);
90 # define try_to_del_timer_sync(t) del_timer(t)
91 # define del_timer_sync(t) del_timer(t)
94 #define del_singleshot_timer_sync(t) del_timer_sync(t)
96 extern void init_timers(void);
97 extern void run_local_timers(void);
99 extern int it_real_fn(struct hrtimer *);
101 unsigned long __round_jiffies(unsigned long j, int cpu);
102 unsigned long __round_jiffies_relative(unsigned long j, int cpu);
103 unsigned long round_jiffies(unsigned long j);
104 unsigned long round_jiffies_relative(unsigned long j);