2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
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.
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.
28 #ifndef _LINUX_TIMER_H_
29 #define _LINUX_TIMER_H_
31 #include <linux/types.h>
33 #include <sys/param.h>
34 #include <sys/kernel.h>
35 #include <sys/callout.h>
38 struct callout timer_callout;
39 void (*function)(unsigned long);
41 unsigned long expires;
45 _timer_fn(void *context)
47 struct timer_list *timer;
50 timer->function(timer->data);
53 #define setup_timer(timer, func, dat) \
55 (timer)->function = (func); \
56 (timer)->data = (dat); \
57 callout_init(&(timer)->timer_callout, CALLOUT_MPSAFE); \
60 #define init_timer(timer) \
62 (timer)->function = NULL; \
64 callout_init(&(timer)->timer_callout, CALLOUT_MPSAFE); \
67 #define mod_timer(timer, exp) \
69 (timer)->expires = (exp); \
70 callout_reset(&(timer)->timer_callout, (exp) - jiffies, \
71 _timer_fn, (timer)); \
74 #define add_timer(timer) \
75 callout_reset(&(timer)->timer_callout, \
76 (timer)->expires - jiffies, _timer_fn, (timer))
78 #define del_timer(timer) callout_stop(&(timer)->timer_callout)
79 #define del_timer_sync(timer) callout_drain(&(timer)->timer_callout)
81 #define timer_pending(timer) callout_pending(&(timer)->timer_callout)
83 static inline unsigned long
84 round_jiffies(unsigned long j)
86 return roundup(j, hz);
89 #endif /* _LINUX_TIMER_H_ */