54 int task_work_add(struct task_struct *task, struct callback_head *work,  in task_work_add()  argument
62 		if (WARN_ON_ONCE(task != current))  in task_work_add()
80 	head = READ_ONCE(task->task_works);  in task_work_add()
85 	} while (!try_cmpxchg(&task->task_works, &head, work));  in task_work_add()
91 		set_notify_resume(task);  in task_work_add()
94 		set_notify_signal(task);  in task_work_add()
97 		__set_notify_signal(task);  in task_work_add()
122 task_work_cancel_match(struct task_struct *task,  in task_work_cancel_match()  argument
126 	struct callback_head **pprev = &task->task_works;  in task_work_cancel_match()
130 	if (likely(!task_work_pending(task)))  in task_work_cancel_match()
138 	raw_spin_lock_irqsave(&task->pi_lock, flags);  in task_work_cancel_match()
147 	raw_spin_unlock_irqrestore(&task->pi_lock, flags);  in task_work_cancel_match()
169 task_work_cancel_func(struct task_struct *task, task_work_func_t func)  in task_work_cancel_func()  argument
171 	return task_work_cancel_match(task, task_work_func_match, func);  in task_work_cancel_func()
189 bool task_work_cancel(struct task_struct *task, struct callback_head *cb)  in task_work_cancel()  argument
193 	ret = task_work_cancel_match(task, task_work_match, cb);  in task_work_cancel()
208 	struct task_struct *task = current;  in task_work_run()  local
216 		work = READ_ONCE(task->task_works);  in task_work_run()
220 				if (task->flags & PF_EXITING)  in task_work_run()
225 		} while (!try_cmpxchg(&task->task_works, &work, head));  in task_work_run()
234 		raw_spin_lock_irq(&task->pi_lock);  in task_work_run()
235 		raw_spin_unlock_irq(&task->pi_lock);  in task_work_run()