task_work.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _LINUX_TASK_WORK_H
 3#define _LINUX_TASK_WORK_H
 4
 5#include <linux/list.h>
 6#include <linux/sched.h>
 7
 8typedef void (*task_work_func_t)(struct callback_head *);
 9
10static inline void
11init_task_work(struct callback_head *twork, task_work_func_t func)
12{
13	twork->func = func;
14}
15
16enum task_work_notify_mode {
17	TWA_NONE = 0,
18	TWA_RESUME,
19	TWA_SIGNAL,
20	TWA_SIGNAL_NO_IPI,
21	TWA_NMI_CURRENT,
22};
23
24static inline bool task_work_pending(struct task_struct *task)
25{
26	return READ_ONCE(task->task_works);
27}
28
29int task_work_add(struct task_struct *task, struct callback_head *twork,
30			enum task_work_notify_mode mode);
31
32struct callback_head *task_work_cancel_match(struct task_struct *task,
33	bool (*match)(struct callback_head *, void *data), void *data);
34struct callback_head *task_work_cancel_func(struct task_struct *, task_work_func_t);
35bool task_work_cancel(struct task_struct *task, struct callback_head *cb);
36void task_work_run(void);
37
38static inline void exit_task_work(struct task_struct *task)
39{
40	task_work_run();
41}
42
43#endif	/* _LINUX_TASK_WORK_H */