mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-15 23:25:07 +00:00
52bad64d95
Separate delayable work items from non-delayable work items be splitting them into a separate structure (delayed_work), which incorporates a work_struct and the timer_list removed from work_struct. The work_struct struct is huge, and this limits it's usefulness. On a 64-bit architecture it's nearly 100 bytes in size. This reduces that by half for the non-delayable type of event. Signed-Off-By: David Howells <dhowells@redhat.com>
121 lines
3.4 KiB
C
121 lines
3.4 KiB
C
/*
|
|
* workqueue.h --- work queue handling for Linux.
|
|
*/
|
|
|
|
#ifndef _LINUX_WORKQUEUE_H
|
|
#define _LINUX_WORKQUEUE_H
|
|
|
|
#include <linux/timer.h>
|
|
#include <linux/linkage.h>
|
|
#include <linux/bitops.h>
|
|
|
|
struct workqueue_struct;
|
|
|
|
struct work_struct {
|
|
unsigned long pending;
|
|
struct list_head entry;
|
|
void (*func)(void *);
|
|
void *data;
|
|
void *wq_data;
|
|
};
|
|
|
|
struct delayed_work {
|
|
struct work_struct work;
|
|
struct timer_list timer;
|
|
};
|
|
|
|
struct execute_work {
|
|
struct work_struct work;
|
|
};
|
|
|
|
#define __WORK_INITIALIZER(n, f, d) { \
|
|
.entry = { &(n).entry, &(n).entry }, \
|
|
.func = (f), \
|
|
.data = (d), \
|
|
}
|
|
|
|
#define __DELAYED_WORK_INITIALIZER(n, f, d) { \
|
|
.work = __WORK_INITIALIZER((n).work, (f), (d)), \
|
|
.timer = TIMER_INITIALIZER(NULL, 0, 0), \
|
|
}
|
|
|
|
#define DECLARE_WORK(n, f, d) \
|
|
struct work_struct n = __WORK_INITIALIZER(n, f, d)
|
|
|
|
#define DECLARE_DELAYED_WORK(n, f, d) \
|
|
struct delayed_work n = __DELAYED_WORK_INITIALIZER(n, f, d)
|
|
|
|
/*
|
|
* initialize a work item's function and data pointers
|
|
*/
|
|
#define PREPARE_WORK(_work, _func, _data) \
|
|
do { \
|
|
(_work)->func = (_func); \
|
|
(_work)->data = (_data); \
|
|
} while (0)
|
|
|
|
#define PREPARE_DELAYED_WORK(_work, _func, _data) \
|
|
PREPARE_WORK(&(_work)->work, (_func), (_data))
|
|
|
|
/*
|
|
* initialize all of a work item in one go
|
|
*/
|
|
#define INIT_WORK(_work, _func, _data) \
|
|
do { \
|
|
INIT_LIST_HEAD(&(_work)->entry); \
|
|
(_work)->pending = 0; \
|
|
PREPARE_WORK((_work), (_func), (_data)); \
|
|
} while (0)
|
|
|
|
#define INIT_DELAYED_WORK(_work, _func, _data) \
|
|
do { \
|
|
INIT_WORK(&(_work)->work, (_func), (_data)); \
|
|
init_timer(&(_work)->timer); \
|
|
} while (0)
|
|
|
|
|
|
extern struct workqueue_struct *__create_workqueue(const char *name,
|
|
int singlethread);
|
|
#define create_workqueue(name) __create_workqueue((name), 0)
|
|
#define create_singlethread_workqueue(name) __create_workqueue((name), 1)
|
|
|
|
extern void destroy_workqueue(struct workqueue_struct *wq);
|
|
|
|
extern int FASTCALL(queue_work(struct workqueue_struct *wq, struct work_struct *work));
|
|
extern int FASTCALL(queue_delayed_work(struct workqueue_struct *wq, struct delayed_work *work, unsigned long delay));
|
|
extern int queue_delayed_work_on(int cpu, struct workqueue_struct *wq,
|
|
struct delayed_work *work, unsigned long delay);
|
|
extern void FASTCALL(flush_workqueue(struct workqueue_struct *wq));
|
|
|
|
extern int FASTCALL(schedule_work(struct work_struct *work));
|
|
extern int FASTCALL(schedule_delayed_work(struct delayed_work *work, unsigned long delay));
|
|
|
|
extern int schedule_delayed_work_on(int cpu, struct delayed_work *work, unsigned long delay);
|
|
extern int schedule_on_each_cpu(void (*func)(void *info), void *info);
|
|
extern void flush_scheduled_work(void);
|
|
extern int current_is_keventd(void);
|
|
extern int keventd_up(void);
|
|
|
|
extern void init_workqueues(void);
|
|
void cancel_rearming_delayed_work(struct delayed_work *work);
|
|
void cancel_rearming_delayed_workqueue(struct workqueue_struct *,
|
|
struct delayed_work *);
|
|
int execute_in_process_context(void (*fn)(void *), void *,
|
|
struct execute_work *);
|
|
|
|
/*
|
|
* Kill off a pending schedule_delayed_work(). Note that the work callback
|
|
* function may still be running on return from cancel_delayed_work(). Run
|
|
* flush_scheduled_work() to wait on it.
|
|
*/
|
|
static inline int cancel_delayed_work(struct delayed_work *work)
|
|
{
|
|
int ret;
|
|
|
|
ret = del_timer_sync(&work->timer);
|
|
if (ret)
|
|
clear_bit(0, &work->work.pending);
|
|
return ret;
|
|
}
|
|
|
|
#endif
|