include/os/linux/spl/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  *
  10  *  The SPL is free software; you can redistribute it and/or modify it
  11  *  under the terms of the GNU General Public License as published by the
  12  *  Free Software Foundation; either version 2 of the License, or (at your
  13  *  option) any later version.
  14  *
  15  *  The SPL is distributed in the hope that it will be useful, but WITHOUT
  16  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  18  *  for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License along
  21  *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24 #ifndef _SPL_TIMER_H
  25 #define _SPL_TIMER_H
  26
  27 #include <linux/module.h>
  28 #include <linux/delay.h>
  29 #include <linux/sched.h>
  30 #include <linux/time.h>
  31 #include <linux/timer.h>
  32
  33 #define lbolt                           ((clock_t)jiffies)
  34 #define lbolt64                         ((int64_t)get_jiffies_64())
  35
  36 #define ddi_get_lbolt()                 ((clock_t)jiffies)
  37 #define ddi_get_lbolt64()               ((int64_t)get_jiffies_64())
  38
  39 #define ddi_time_before(a, b)           (typecheck(clock_t, a) && \
  40                                         typecheck(clock_t, b) && \
  41                                         ((a) - (b) < 0))
  42 #define ddi_time_after(a, b)            ddi_time_before(b, a)
  43 #define ddi_time_before_eq(a, b)        (!ddi_time_after(a, b))
  44 #define ddi_time_after_eq(a, b)         ddi_time_before_eq(b, a)
  45
  46 #define ddi_time_before64(a, b)         (typecheck(int64_t, a) && \
  47                                         typecheck(int64_t, b) && \
  48                                         ((a) - (b) < 0))
  49 #define ddi_time_after64(a, b)          ddi_time_before64(b, a)
  50 #define ddi_time_before_eq64(a, b)      (!ddi_time_after64(a, b))
  51 #define ddi_time_after_eq64(a, b)       ddi_time_before_eq64(b, a)
  52
  53 #define delay(ticks)                    schedule_timeout_uninterruptible(ticks)
  54
  55 #define SEC_TO_TICK(sec)                ((sec) * HZ)
  56 #define MSEC_TO_TICK(ms)                msecs_to_jiffies(ms)
  57 #define USEC_TO_TICK(us)                usecs_to_jiffies(us)
  58 #define NSEC_TO_TICK(ns)                usecs_to_jiffies(ns / NSEC_PER_USEC)
  59
  60 #ifndef from_timer
  61 #define from_timer(var, timer, timer_field) \
  62         container_of(timer, typeof(*var), timer_field)
  63 #endif
  64
  65 #ifdef HAVE_KERNEL_TIMER_FUNCTION_TIMER_LIST
  66 typedef struct timer_list *spl_timer_list_t;
  67 #else
  68 typedef unsigned long spl_timer_list_t;
  69 #endif
  70
  71 #ifndef HAVE_KERNEL_TIMER_SETUP
  72
  73 static inline void
  74 timer_setup(struct timer_list *timer, void (*func)(spl_timer_list_t), u32 fl)
  75 {
  76 #ifdef HAVE_KERNEL_TIMER_LIST_FLAGS
  77         (timer)->flags = fl;
  78 #endif
  79         init_timer(timer);
  80         setup_timer(timer, func, (spl_timer_list_t)(timer));
  81 }
  82
  83 #endif /* HAVE_KERNEL_TIMER_SETUP */
  84
  85 #endif  /* _SPL_TIMER_H */