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
29#ifndef __LINUXKPI_LINUX_WAITBIT_H__
30#define	__LINUXKPI_LINUX_WAITBIT_H__
31
32#include <linux/wait.h>
33#include <linux/bitops.h>
34
35extern wait_queue_head_t linux_bit_waitq;
36extern wait_queue_head_t linux_var_waitq;
37
38#define	wait_var_event_killable(var, cond) \
39	wait_event_killable(linux_var_waitq, cond)
40
41#define	wait_var_event_interruptible(var, cond) \
42	wait_event_interruptible(linux_var_waitq, cond)
43
44static inline void
45clear_and_wake_up_bit(int bit, void *word)
46{
47	clear_bit_unlock(bit, word);
48	wake_up_bit(word, bit);
49}
50
51static inline wait_queue_head_t *
52bit_waitqueue(void *word, int bit)
53{
54
55	return (&linux_bit_waitq);
56}
57
58static inline void
59wake_up_var(void *var)
60{
61
62	wake_up(&linux_var_waitq);
63}
64
65static inline wait_queue_head_t *
66__var_waitqueue(void *p)
67{
68	return (&linux_var_waitq);
69}
70
71#endif	/* __LINUXKPI_LINUX_WAITBIT_H__ */
72