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 = 0, 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