1/*-
2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * All rights reserved.
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 unmodified, this list of conditions, and the following
12 *    disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28#ifndef _LINUX_TIMER_H_
29#define _LINUX_TIMER_H_
30
31#include <linux/types.h>
32
33#include <sys/param.h>
34#include <sys/kernel.h>
35#include <sys/callout.h>
36
37struct timer_list {
38	struct callout	timer_callout;
39	void		(*function)(unsigned long);
40        unsigned long	data;
41};
42
43#define	expires	timer_callout.c_time
44
45static inline void
46_timer_fn(void *context)
47{
48	struct timer_list *timer;
49
50	timer = context;
51	timer->function(timer->data);
52}
53
54#define	setup_timer(timer, func, dat)					\
55do {									\
56	(timer)->function = (func);					\
57	(timer)->data = (dat);						\
58	callout_init(&(timer)->timer_callout, CALLOUT_MPSAFE);		\
59} while (0)
60
61#define	init_timer(timer)						\
62do {									\
63	(timer)->function = NULL;					\
64	(timer)->data = 0;						\
65	callout_init(&(timer)->timer_callout, CALLOUT_MPSAFE);		\
66} while (0)
67
68#define	mod_timer(timer, expire)					\
69	callout_reset(&(timer)->timer_callout, (expire) - jiffies,	\
70	    _timer_fn, (timer))
71
72#define	add_timer(timer)						\
73	callout_reset(&(timer)->timer_callout,				\
74	    (timer)->timer_callout.c_time - jiffies, _timer_fn, (timer))
75
76#define	del_timer(timer)	callout_stop(&(timer)->timer_callout)
77#define	del_timer_sync(timer)	callout_drain(&(timer)->timer_callout)
78
79#define	timer_pending(timer)	callout_pending(&(timer)->timer_callout)
80
81static inline unsigned long
82round_jiffies(unsigned long j)
83{
84	return roundup(j, hz);
85}
86
87#endif /* _LINUX_TIMER_H_ */
88