1/*-
2 * Copyright (c) 2020 The FreeBSD Foundation
3 *
4 * This software was developed by Emmanuel Vadot under sponsorship
5 * from the FreeBSD Foundation.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31#ifndef __LINUX_WAITBIT_H__
32#define	__LINUX_WAITBIT_H__
33
34#include <linux/wait.h>
35#include <linux/bitops.h>
36
37extern wait_queue_head_t linux_bit_waitq;
38extern wait_queue_head_t linux_var_waitq;
39
40#define	wait_var_event_killable(var, cond) \
41	wait_event_killable(linux_var_waitq, cond)
42
43static inline void
44clear_and_wake_up_bit(int bit, void *word)
45{
46	clear_bit_unlock(bit, word);
47	wake_up_bit(word, bit);
48}
49
50static inline wait_queue_head_t *
51bit_waitqueue(void *word, int bit)
52{
53
54	return (&linux_bit_waitq);
55}
56
57static inline void
58wake_up_var(void *var)
59{
60
61	wake_up(&linux_var_waitq);
62}
63
64#endif	/* __LINUX_WAITBIT_H__ */
65