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
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 TWA_NMI_CURRENT,
22 };
23
24 static inline bool task_work_pending(struct task_struct *task)
25 {
26 return READ_ONCE(task->task_works);
27 }
28
29 int task_work_add(struct task_struct *task, struct callback_head *twork,
30 enum task_work_notify_mode mode);
31
32 struct callback_head *task_work_cancel_match(struct task_struct *task,
33 bool (*match)(struct callback_head *, void *data), void *data);
34 struct callback_head *task_work_cancel_func(struct task_struct *, task_work_func_t);
35 bool task_work_cancel(struct task_struct *task, struct callback_head *cb);
36 void task_work_run(void);
37
38 static inline void exit_task_work(struct task_struct *task)
39 {
40 task_work_run();
41 }
42
43 #endif /* _LINUX_TASK_WORK_H */
44
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