sched.h revision 1.7
1/* $NetBSD: sched.h,v 1.7 2018/08/27 06:17:30 riastradh Exp $ */ 2 3/*- 4 * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Taylor R. Campbell. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#ifndef _LINUX_SCHED_H_ 33#define _LINUX_SCHED_H_ 34 35#include <sys/param.h> 36#include <sys/kernel.h> 37#include <sys/proc.h> 38 39#include <asm/param.h> 40#include <asm/barrier.h> 41#include <linux/errno.h> 42 43#define TASK_COMM_LEN MAXCOMLEN 44 45#define current curproc 46 47static inline pid_t 48task_pid_nr(struct proc *p) 49{ 50 return p->p_pid; 51} 52 53static inline long 54schedule_timeout_uninterruptible(long timeout) 55{ 56 long remain; 57 int start, end; 58 59 if (cold) { 60 DELAY(timeout); 61 return 0; 62 } 63 64 start = hardclock_ticks; 65 /* XXX Integer truncation...not likely to matter here. */ 66 (void)kpause("loonix", false /*!intr*/, timeout, NULL); 67 end = hardclock_ticks; 68 69 remain = timeout - (end - start); 70 return remain > 0 ? remain : 0; 71} 72 73#endif /* _LINUX_SCHED_H_ */ 74