sys/dev/drm/include/linux/sched.h

   1 /*-
   2  * Copyright (c) 2015-2017 François Tigeot
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice unmodified, this list of conditions, and the following
  10  *    disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #ifndef _LINUX_SCHED_H_
  28 #define _LINUX_SCHED_H_
  29
  30 #include <linux/capability.h>
  31 #include <linux/kernel.h>
  32 #include <linux/types.h>
  33 #include <linux/jiffies.h>
  34 #include <linux/errno.h>
  35
  36 #include <asm/page.h>
  37
  38 #include <linux/compiler.h>
  39 #include <linux/completion.h>
  40 #include <linux/rculist.h>
  41
  42 #include <linux/time.h>
  43 #include <linux/timer.h>
  44 #include <linux/hrtimer.h>
  45 #include <linux/gfp.h>
  46
  47 #include <sys/param.h>
  48 #include <sys/systm.h>
  49 #include <sys/proc.h>
  50 #include <sys/sched.h>
  51 #include <sys/signal2.h>
  52
  53 #define TASK_RUNNING            0
  54 #define TASK_INTERRUPTIBLE      1
  55 #define TASK_UNINTERRUPTIBLE    2
  56
  57 /*
  58  * schedule_timeout - sleep until timeout
  59  * @timeout: timeout value in jiffies
  60  */
  61 static inline long
  62 schedule_timeout(signed long timeout)
  63 {
  64         static int dummy;
  65
  66         if (timeout < 0) {
  67                 kprintf("schedule_timeout(): timeout cannot be negative\n");
  68                 return 0;
  69         }
  70
  71         tsleep(&dummy, 0, "lstim", timeout);
  72
  73         return 0;
  74 }
  75
  76 #define TASK_COMM_LEN   MAXCOMLEN
  77
  78 #define signal_pending(lp)      CURSIG(lp)
  79
  80 /*
  81  * local_clock: fast time source, monotonic on the same cpu
  82  */
  83 static inline uint64_t
  84 local_clock(void)
  85 {
  86         struct timespec ts;
  87
  88         getnanouptime(&ts);
  89         return (ts.tv_sec * NSEC_PER_SEC) + ts.tv_nsec;
  90 }
  91
  92 #endif  /* _LINUX_SCHED_H_ */