include/sys/timer.h

   1 /*****************************************************************************\
   2  *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
   3  *  Copyright (C) 2007 The Regents of the University of California.
   4  *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
   5  *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
   6  *  UCRL-CODE-235197
   7  *
   8  *  This file is part of the SPL, Solaris Porting Layer.
   9  *  For details, see <http://zfsonlinux.org/>.
  10  *
  11  *  The SPL is free software; you can redistribute it and/or modify it
  12  *  under the terms of the GNU General Public License as published by the
  13  *  Free Software Foundation; either version 2 of the License, or (at your
  14  *  option) any later version.
  15  *
  16  *  The SPL is distributed in the hope that it will be useful, but WITHOUT
  17  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19  *  for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License along
  22  *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
  23 \*****************************************************************************/
  24
  25 #ifndef _SPL_TIMER_H
  26 #define _SPL_TIMER_H
  27
  28 #include <linux/module.h>
  29 #include <linux/sched.h>
  30 #include <linux/timer.h>
  31
  32 #define lbolt                           ((clock_t)jiffies)
  33 #define lbolt64                         ((int64_t)get_jiffies_64())
  34
  35 #define ddi_get_lbolt()                 ((clock_t)jiffies)
  36 #define ddi_get_lbolt64()               ((int64_t)get_jiffies_64())
  37
  38 #define ddi_time_before(a, b)           (typecheck(clock_t, a) && \
  39                                         typecheck(clock_t, b) && \
  40                                         ((a) - (b) < 0))
  41 #define ddi_time_after(a, b)            ddi_time_before(b, a)
  42 #define ddi_time_before_eq(a, b)        (!ddi_time_after(a, b))
  43 #define ddi_time_after_eq(a, b)         ddi_time_before_eq(b, a)
  44
  45 #define ddi_time_before64(a, b)         (typecheck(int64_t, a) && \
  46                                         typecheck(int64_t, b) && \
  47                                         ((a) - (b) < 0))
  48 #define ddi_time_after64(a, b)          ddi_time_before64(b, a)
  49 #define ddi_time_before_eq64(a, b)      (!ddi_time_after64(a, b))
  50 #define ddi_time_after_eq64(a, b)       ddi_time_before_eq64(b, a)
  51
  52 #define delay(ticks)                    schedule_timeout_uninterruptible(ticks)
  53
  54 #define SEC_TO_TICK(sec)                ((sec) * HZ)
  55 #define MSEC_TO_TICK(ms)                msecs_to_jiffies(ms)
  56 #define USEC_TO_TICK(us)                usecs_to_jiffies(us)
  57 #define NSEC_TO_TICK(ns)                usecs_to_jiffies(ns / NSEC_PER_USEC)
  58
  59 #endif  /* _SPL_TIMER_H */