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  * 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_TIMER_H_
  30 #define _LINUX_TIMER_H_
  31
  32 #include <linux/types.h>
  33
  34 #include <sys/param.h>
  35 #include <sys/kernel.h>
  36 #include <sys/callout.h>
  37
  38 struct timer_list {
  39         struct callout  timer_callout;
  40         void            (*function)(unsigned long);
  41         unsigned long   data;
  42         unsigned long   expires;
  43 };
  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, exp)                                           \
  69 do {                                                                    \
  70         (timer)->expires = (exp);                                       \
  71         callout_reset(&(timer)->timer_callout, (exp) - jiffies,         \
  72             _timer_fn, (timer));                                        \
  73 } while (0)
  74
  75 #define add_timer(timer)                                                \
  76         callout_reset(&(timer)->timer_callout,                          \
  77             (timer)->expires - jiffies, _timer_fn, (timer))
  78
  79 #define del_timer(timer)        callout_stop(&(timer)->timer_callout)
  80 #define del_timer_sync(timer)   callout_drain(&(timer)->timer_callout)
  81
  82 #define timer_pending(timer)    callout_pending(&(timer)->timer_callout)
  83
  84 static inline unsigned long
  85 round_jiffies(unsigned long j)
  86 {
  87         return roundup(j, hz);
  88 }
  89
  90 #define round_jiffies_relative(j) round_jiffies(j)
  91
  92 #endif /* _LINUX_TIMER_H_ */