]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef _LINUX_TIMER_H |
2 | #define _LINUX_TIMER_H | |
3 | ||
4 | #include <linux/config.h> | |
5 | #include <linux/list.h> | |
6 | #include <linux/spinlock.h> | |
7 | #include <linux/stddef.h> | |
8 | ||
55c888d6 | 9 | struct timer_base_s; |
1da177e4 LT |
10 | |
11 | struct timer_list { | |
12 | struct list_head entry; | |
13 | unsigned long expires; | |
14 | ||
1da177e4 LT |
15 | void (*function)(unsigned long); |
16 | unsigned long data; | |
17 | ||
55c888d6 | 18 | struct timer_base_s *base; |
1da177e4 LT |
19 | }; |
20 | ||
55c888d6 ON |
21 | extern struct timer_base_s __init_timer_base; |
22 | ||
1da177e4 LT |
23 | #define TIMER_INITIALIZER(_function, _expires, _data) { \ |
24 | .function = (_function), \ | |
25 | .expires = (_expires), \ | |
26 | .data = (_data), \ | |
55c888d6 | 27 | .base = &__init_timer_base, \ |
1da177e4 LT |
28 | } |
29 | ||
8d06afab IM |
30 | #define DEFINE_TIMER(_name, _function, _expires, _data) \ |
31 | struct timer_list _name = \ | |
32 | TIMER_INITIALIZER(_function, _expires, _data) | |
33 | ||
55c888d6 | 34 | void fastcall init_timer(struct timer_list * timer); |
1da177e4 | 35 | |
a8db2db1 ON |
36 | static inline void setup_timer(struct timer_list * timer, |
37 | void (*function)(unsigned long), | |
38 | unsigned long data) | |
39 | { | |
40 | timer->function = function; | |
41 | timer->data = data; | |
42 | init_timer(timer); | |
43 | } | |
44 | ||
1da177e4 LT |
45 | /*** |
46 | * timer_pending - is a timer pending? | |
47 | * @timer: the timer in question | |
48 | * | |
49 | * timer_pending will tell whether a given timer is currently pending, | |
50 | * or not. Callers must ensure serialization wrt. other operations done | |
51 | * to this timer, eg. interrupt contexts, or other CPUs on SMP. | |
52 | * | |
53 | * return value: 1 if the timer is pending, 0 if not. | |
54 | */ | |
55 | static inline int timer_pending(const struct timer_list * timer) | |
56 | { | |
55c888d6 | 57 | return timer->entry.next != NULL; |
1da177e4 LT |
58 | } |
59 | ||
60 | extern void add_timer_on(struct timer_list *timer, int cpu); | |
61 | extern int del_timer(struct timer_list * timer); | |
62 | extern int __mod_timer(struct timer_list *timer, unsigned long expires); | |
63 | extern int mod_timer(struct timer_list *timer, unsigned long expires); | |
64 | ||
65 | extern unsigned long next_timer_interrupt(void); | |
66 | ||
67 | /*** | |
68 | * add_timer - start a timer | |
69 | * @timer: the timer to be added | |
70 | * | |
71 | * The kernel will do a ->function(->data) callback from the | |
72 | * timer interrupt at the ->expired point in the future. The | |
73 | * current time is 'jiffies'. | |
74 | * | |
75 | * The timer's ->expired, ->function (and if the handler uses it, ->data) | |
76 | * fields must be set prior calling this function. | |
77 | * | |
78 | * Timers with an ->expired field in the past will be executed in the next | |
79 | * timer tick. | |
80 | */ | |
81 | static inline void add_timer(struct timer_list * timer) | |
82 | { | |
83 | __mod_timer(timer, timer->expires); | |
84 | } | |
85 | ||
86 | #ifdef CONFIG_SMP | |
fd450b73 | 87 | extern int try_to_del_timer_sync(struct timer_list *timer); |
1da177e4 | 88 | extern int del_timer_sync(struct timer_list *timer); |
1da177e4 | 89 | #else |
fd450b73 ON |
90 | # define try_to_del_timer_sync(t) del_timer(t) |
91 | # define del_timer_sync(t) del_timer(t) | |
1da177e4 LT |
92 | #endif |
93 | ||
55c888d6 ON |
94 | #define del_singleshot_timer_sync(t) del_timer_sync(t) |
95 | ||
1da177e4 LT |
96 | extern void init_timers(void); |
97 | extern void run_local_timers(void); | |
98 | extern void it_real_fn(unsigned long); | |
99 | ||
100 | #endif |