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 { 1791989c70SJens Axboe TWA_NONE, 1891989c70SJens Axboe TWA_RESUME, 1991989c70SJens Axboe TWA_SIGNAL, 20e788be95SJens Axboe TWA_SIGNAL_NO_IPI, 21*466e4d80SSebastian Andrzej Siewior TWA_NMI_CURRENT, 2291989c70SJens Axboe }; 2391989c70SJens Axboe 247f62d40dSEric W. Biederman static inline bool task_work_pending(struct task_struct *task) 257f62d40dSEric W. Biederman { 267f62d40dSEric W. Biederman return READ_ONCE(task->task_works); 277f62d40dSEric W. Biederman } 287f62d40dSEric W. Biederman 2991989c70SJens Axboe int task_work_add(struct task_struct *task, struct callback_head *twork, 3091989c70SJens Axboe enum task_work_notify_mode mode); 31e91b4816SOleg Nesterov 32c7aab1a7SJens Axboe struct callback_head *task_work_cancel_match(struct task_struct *task, 33c7aab1a7SJens Axboe bool (*match)(struct callback_head *, void *data), void *data); 3468cbd415SFrederic Weisbecker struct callback_head *task_work_cancel_func(struct task_struct *, task_work_func_t); 35f409530eSFrederic Weisbecker bool task_work_cancel(struct task_struct *task, struct callback_head *cb); 36e73f8959SOleg Nesterov void task_work_run(void); 37e73f8959SOleg Nesterov 38e73f8959SOleg Nesterov static inline void exit_task_work(struct task_struct *task) 39e73f8959SOleg Nesterov { 40e73f8959SOleg Nesterov task_work_run(); 41e73f8959SOleg Nesterov } 42e73f8959SOleg Nesterov 43e73f8959SOleg Nesterov #endif /* _LINUX_TASK_WORK_H */ 44