timer.h revision 335414 
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 * $FreeBSD: stable/11/sys/compat/linuxkpi/common/include/linux/timer.h 335414 2018-06-20 06:38:03Z hselasky $
30 */
31#ifndef _LINUX_TIMER_H_
32#define	_LINUX_TIMER_H_
33
34#include <linux/types.h>
35
36#include <sys/param.h>
37#include <sys/kernel.h>
38#include <sys/callout.h>
39
40struct timer_list {
41	struct callout callout;
42	union {
43		void (*function) (unsigned long);	/* < v4.15 */
44		void (*function_415) (struct timer_list *);
45	};
46	unsigned long data;
47	int expires;
48};
49
50extern unsigned long linux_timer_hz_mask;
51
52#define	TIMER_IRQSAFE	0x0001
53
54#define	from_timer(var, arg, field)					\
55        container_of(arg, typeof(*(var)), field)
56
57#define	timer_setup(timer, func, flags) do {				\
58	CTASSERT(((flags) & ~TIMER_IRQSAFE) == 0);			\
59	(timer)->function_415 = (func);					\
60	(timer)->data = (unsigned long)(timer);				\
61	callout_init(&(timer)->callout, 1);				\
62} while (0)
63
64#define	setup_timer(timer, func, dat) do {				\
65	(timer)->function = (func);					\
66	(timer)->data = (dat);						\
67	callout_init(&(timer)->callout, 1);			\
68} while (0)
69
70#define	__setup_timer(timer, func, dat, flags) do {			\
71	CTASSERT(((flags) & ~TIMER_IRQSAFE) == 0);			\
72	setup_timer(timer, func, dat);					\
73} while (0)
74
75#define	init_timer(timer) do {						\
76	(timer)->function = NULL;					\
77	(timer)->data = 0;						\
78	callout_init(&(timer)->callout, 1);			\
79} while (0)
80
81extern void mod_timer(struct timer_list *, int);
82extern void add_timer(struct timer_list *);
83extern void add_timer_on(struct timer_list *, int cpu);
84
85#define	del_timer(timer)	(void)callout_stop(&(timer)->callout)
86#define	del_timer_sync(timer)	(void)callout_drain(&(timer)->callout)
87#define	timer_pending(timer)	callout_pending(&(timer)->callout)
88#define	round_jiffies(j)	\
89	((int)(((j) + linux_timer_hz_mask) & ~linux_timer_hz_mask))
90#define	round_jiffies_relative(j) round_jiffies(j)
91#define	round_jiffies_up(j)	round_jiffies(j)
92#define	round_jiffies_up_relative(j) round_jiffies_up(j)
93
94#endif					/* _LINUX_TIMER_H_ */
95