2 * Copyright (c) 2019 François Tigeot <ftigeot@wolfpond.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include <linux/wait.h>
28 #include <linux/sched.h>
31 default_wake_function(wait_queue_t *q, unsigned mode, int wake_flags, void *key)
33 return wake_up_process(q->private);
37 autoremove_wake_function(wait_queue_t *wait, unsigned mode, int sync, void *key)
39 int ret = default_wake_function(wait, mode, sync, key);
41 /* Was the process woken up ? */
43 list_del_init(&wait->task_list);
49 __wake_up_core(wait_queue_head_t *q, int num_to_wake_up)
51 wait_queue_t *curr, *next;
52 int mode = TASK_NORMAL;
54 list_for_each_entry_safe(curr, next, &q->task_list, task_list) {
55 if (curr->func(curr, mode, 0, NULL))
58 if (num_to_wake_up == 0)