1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2e73f8959SOleg Nesterov #ifndef _LINUX_TASK_WORK_H 3e73f8959SOleg Nesterov #define _LINUX_TASK_WORK_H 4e73f8959SOleg Nesterov 5e73f8959SOleg Nesterov #include <linux/list.h> 6e73f8959SOleg Nesterov #include <linux/sched.h> 7e73f8959SOleg Nesterov 867d12145SAl Viro typedef void (*task_work_func_t)(struct callback_head *); 9e73f8959SOleg Nesterov 10e73f8959SOleg Nesterov static inline void 1167d12145SAl Viro init_task_work(struct callback_head *twork, task_work_func_t func) 12e73f8959SOleg Nesterov { 13e73f8959SOleg Nesterov twork->func = func; 14e73f8959SOleg Nesterov } 15e73f8959SOleg Nesterov 1691989c70SJens Axboe enum task_work_notify_mode { 17*73ab05aaSWaiman Long TWA_NONE = 0, 1891989c70SJens Axboe TWA_RESUME, 1991989c70SJens Axboe TWA_SIGNAL, 20e788be95SJens Axboe TWA_SIGNAL_NO_IPI, 21466e4d80SSebastian Andrzej Siewior TWA_NMI_CURRENT, 22*73ab05aaSWaiman Long 23*73ab05aaSWaiman Long TWA_FLAGS = 0xff00, 24*73ab05aaSWaiman Long TWAF_NO_ALLOC = 0x0100, 2591989c70SJens Axboe }; 2691989c70SJens Axboe 277f62d40dSEric W. Biederman static inline bool task_work_pending(struct task_struct *task) 287f62d40dSEric W. Biederman { 297f62d40dSEric W. Biederman return READ_ONCE(task->task_works); 307f62d40dSEric W. Biederman } 317f62d40dSEric W. Biederman 3291989c70SJens Axboe int task_work_add(struct task_struct *task, struct callback_head *twork, 3391989c70SJens Axboe enum task_work_notify_mode mode); 34e91b4816SOleg Nesterov 35c7aab1a7SJens Axboe struct callback_head *task_work_cancel_match(struct task_struct *task, 36c7aab1a7SJens Axboe bool (*match)(struct callback_head *, void *data), void *data); 3768cbd415SFrederic Weisbecker struct callback_head *task_work_cancel_func(struct task_struct *, task_work_func_t); 38f409530eSFrederic Weisbecker bool task_work_cancel(struct task_struct *task, struct callback_head *cb); 39e73f8959SOleg Nesterov void task_work_run(void); 40e73f8959SOleg Nesterov 41e73f8959SOleg Nesterov static inline void exit_task_work(struct task_struct *task) 42e73f8959SOleg Nesterov { 43e73f8959SOleg Nesterov task_work_run(); 44e73f8959SOleg Nesterov } 45e73f8959SOleg Nesterov 46e73f8959SOleg Nesterov #endif /* _LINUX_TASK_WORK_H */ 47