mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 05:04:00 +08:00
8d06afab73
Clean up timer initialization by introducing DEFINE_TIMER a'la DEFINE_SPINLOCK. Build and boot-tested on x86. A similar patch has been been in the -RT tree for some time. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
#ifndef _LINUX_TIMER_H
|
|
#define _LINUX_TIMER_H
|
|
|
|
#include <linux/config.h>
|
|
#include <linux/list.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/stddef.h>
|
|
|
|
struct timer_base_s;
|
|
|
|
struct timer_list {
|
|
struct list_head entry;
|
|
unsigned long expires;
|
|
|
|
unsigned long magic;
|
|
|
|
void (*function)(unsigned long);
|
|
unsigned long data;
|
|
|
|
struct timer_base_s *base;
|
|
};
|
|
|
|
#define TIMER_MAGIC 0x4b87ad6e
|
|
|
|
extern struct timer_base_s __init_timer_base;
|
|
|
|
#define TIMER_INITIALIZER(_function, _expires, _data) { \
|
|
.function = (_function), \
|
|
.expires = (_expires), \
|
|
.data = (_data), \
|
|
.base = &__init_timer_base, \
|
|
.magic = TIMER_MAGIC, \
|
|
}
|
|
|
|
#define DEFINE_TIMER(_name, _function, _expires, _data) \
|
|
struct timer_list _name = \
|
|
TIMER_INITIALIZER(_function, _expires, _data)
|
|
|
|
void fastcall init_timer(struct timer_list * timer);
|
|
|
|
/***
|
|
* timer_pending - is a timer pending?
|
|
* @timer: the timer in question
|
|
*
|
|
* timer_pending will tell whether a given timer is currently pending,
|
|
* or not. Callers must ensure serialization wrt. other operations done
|
|
* to this timer, eg. interrupt contexts, or other CPUs on SMP.
|
|
*
|
|
* return value: 1 if the timer is pending, 0 if not.
|
|
*/
|
|
static inline int timer_pending(const struct timer_list * timer)
|
|
{
|
|
return timer->entry.next != NULL;
|
|
}
|
|
|
|
extern void add_timer_on(struct timer_list *timer, int cpu);
|
|
extern int del_timer(struct timer_list * timer);
|
|
extern int __mod_timer(struct timer_list *timer, unsigned long expires);
|
|
extern int mod_timer(struct timer_list *timer, unsigned long expires);
|
|
|
|
extern unsigned long next_timer_interrupt(void);
|
|
|
|
/***
|
|
* add_timer - start a timer
|
|
* @timer: the timer to be added
|
|
*
|
|
* The kernel will do a ->function(->data) callback from the
|
|
* timer interrupt at the ->expired point in the future. The
|
|
* current time is 'jiffies'.
|
|
*
|
|
* The timer's ->expired, ->function (and if the handler uses it, ->data)
|
|
* fields must be set prior calling this function.
|
|
*
|
|
* Timers with an ->expired field in the past will be executed in the next
|
|
* timer tick.
|
|
*/
|
|
static inline void add_timer(struct timer_list * timer)
|
|
{
|
|
__mod_timer(timer, timer->expires);
|
|
}
|
|
|
|
#ifdef CONFIG_SMP
|
|
extern int try_to_del_timer_sync(struct timer_list *timer);
|
|
extern int del_timer_sync(struct timer_list *timer);
|
|
#else
|
|
# define try_to_del_timer_sync(t) del_timer(t)
|
|
# define del_timer_sync(t) del_timer(t)
|
|
#endif
|
|
|
|
#define del_singleshot_timer_sync(t) del_timer_sync(t)
|
|
|
|
extern void init_timers(void);
|
|
extern void run_local_timers(void);
|
|
extern void it_real_fn(unsigned long);
|
|
|
|
#endif
|