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 #define MAX_SCHEDULE_TIMEOUT LONG_MAX 93 94 static inline void 95 yield(void) 96 { 97 lwkt_yield(); 98 } 99 100 #endif /* _LINUX_SCHED_H_ */ 101