sys/ofed/include/linux/timer.h

   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
  37 struct 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
  45 static 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)                                   \
  55 do {                                                                    \
  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)                                               \
  62 do {                                                                    \
  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
  81 static inline unsigned long
  82 round_jiffies(unsigned long j)
  83 {
  84         return roundup(j, hz);
  85 }
  86
  87 #endif /* _LINUX_TIMER_H_ */