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
);
65 * Return when the next timer-wheel timeout occurs (in absolute jiffies),
66 * locks the timer base:
68 extern unsigned long next_timer_interrupt(void);
70 * Return when the next timer-wheel timeout occurs (in absolute jiffies),
71 * locks the timer base and does the comparison against the given
74 extern unsigned long get_next_timer_interrupt(unsigned long now
);
77 * add_timer - start a timer
78 * @timer: the timer to be added
80 * The kernel will do a ->function(->data) callback from the
81 * timer interrupt at the ->expires point in the future. The
82 * current time is 'jiffies'.
84 * The timer's ->expires, ->function (and if the handler uses it, ->data)
85 * fields must be set prior calling this function.
87 * Timers with an ->expires field in the past will be executed in the next
90 static inline void add_timer(struct timer_list
*timer
)
92 BUG_ON(timer_pending(timer
));
93 __mod_timer(timer
, timer
->expires
);
97 extern int try_to_del_timer_sync(struct timer_list
*timer
);
98 extern int del_timer_sync(struct timer_list
*timer
);
100 # define try_to_del_timer_sync(t) del_timer(t)
101 # define del_timer_sync(t) del_timer(t)
104 #define del_singleshot_timer_sync(t) del_timer_sync(t)
106 extern void init_timers(void);
107 extern void run_local_timers(void);
109 extern enum hrtimer_restart
it_real_fn(struct hrtimer
*);
111 unsigned long __round_jiffies(unsigned long j
, int cpu
);
112 unsigned long __round_jiffies_relative(unsigned long j
, int cpu
);
113 unsigned long round_jiffies(unsigned long j
);
114 unsigned long round_jiffies_relative(unsigned long j
);