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
35 extern wait_queue_head_t linux_bit_waitq;
36 extern 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
44 static inline void
clear_and_wake_up_bit(int bit,void * word)45 clear_and_wake_up_bit(int bit, void *word)
46 {
47 clear_bit_unlock(bit, word);
48 wake_up_bit(word, bit);
49 }
50
51 static inline wait_queue_head_t *
bit_waitqueue(void * word,int bit)52 bit_waitqueue(void *word, int bit)
53 {
54
55 return (&linux_bit_waitq);
56 }
57
58 static inline void
wake_up_var(void * var)59 wake_up_var(void *var)
60 {
61
62 wake_up(&linux_var_waitq);
63 }
64
65 static inline wait_queue_head_t *
__var_waitqueue(void * p)66 __var_waitqueue(void *p)
67 {
68 return (&linux_var_waitq);
69 }
70
71 #endif /* __LINUXKPI_LINUX_WAITBIT_H__ */
72