jiffies.h revision 282513 
1/*-
2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice unmodified, this list of conditions, and the following
13 *    disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29#ifndef	_LINUX_JIFFIES_H_
30#define	_LINUX_JIFFIES_H_
31
32#include <linux/types.h>
33#include <linux/kernel.h>
34
35#include <sys/time.h>
36#include <sys/kernel.h>
37
38static inline int
39msecs_to_jiffies(int msec)
40{
41	struct timeval tv;
42
43	tv.tv_sec = msec / 1000;
44	tv.tv_usec = (msec % 1000) * 1000;
45	return (tvtohz(&tv));
46}
47
48#define jiffies                 ticks
49#define jiffies_to_msecs(x)     (((int64_t)(x)) * 1000 / hz)
50
51#define	time_after(a, b)	((int)((b) - (a)) < 0)
52#define	time_before(a, b)	time_after(b,a)
53#define	time_after_eq(a, b)	((int)((a) - (b)) >= 0)
54#define	time_before_eq(a, b)	time_after_eq(b, a)
55
56#define	HZ	hz
57
58#endif	/* _LINUX_JIFFIES_H_ */
59