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 
8 typedef void (*task_work_func_t)(struct callback_head *);
9 
10 static inline void
init_task_work(struct callback_head * twork,task_work_func_t func)11 init_task_work(struct callback_head *twork, task_work_func_t func)
12 {
13 	twork->func = func;
14 }
15 
16 enum task_work_notify_mode {
17 	TWA_NONE,
18 	TWA_RESUME,
19 	TWA_SIGNAL,
20 	TWA_SIGNAL_NO_IPI,
21 };
22 
task_work_pending(struct task_struct * task)23 static inline bool task_work_pending(struct task_struct *task)
24 {
25 	return READ_ONCE(task->task_works);
26 }
27 
28 int task_work_add(struct task_struct *task, struct callback_head *twork,
29 			enum task_work_notify_mode mode);
30 
31 struct callback_head *task_work_cancel_match(struct task_struct *task,
32 	bool (*match)(struct callback_head *, void *data), void *data);
33 struct callback_head *task_work_cancel(struct task_struct *, task_work_func_t);
34 void task_work_run(void);
35 
exit_task_work(struct task_struct * task)36 static inline void exit_task_work(struct task_struct *task)
37 {
38 	task_work_run();
39 }
40 
41 #endif	/* _LINUX_TASK_WORK_H */
42