1219820Sjeff/*- 2219820Sjeff * Copyright (c) 2010 Isilon Systems, Inc. 3219820Sjeff * Copyright (c) 2010 iX Systems, Inc. 4219820Sjeff * Copyright (c) 2010 Panasas, Inc. 5271127Shselasky * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd. 6219820Sjeff * All rights reserved. 7219820Sjeff * 8219820Sjeff * Redistribution and use in source and binary forms, with or without 9219820Sjeff * modification, are permitted provided that the following conditions 10219820Sjeff * are met: 11219820Sjeff * 1. Redistributions of source code must retain the above copyright 12219820Sjeff * notice unmodified, this list of conditions, and the following 13219820Sjeff * disclaimer. 14219820Sjeff * 2. Redistributions in binary form must reproduce the above copyright 15219820Sjeff * notice, this list of conditions and the following disclaimer in the 16219820Sjeff * documentation and/or other materials provided with the distribution. 17219820Sjeff * 18219820Sjeff * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19219820Sjeff * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20219820Sjeff * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21219820Sjeff * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22219820Sjeff * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23219820Sjeff * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24219820Sjeff * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25219820Sjeff * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26219820Sjeff * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27219820Sjeff * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28219820Sjeff */ 29219820Sjeff#ifndef _LINUX_WAIT_H_ 30219820Sjeff#define _LINUX_WAIT_H_ 31219820Sjeff 32219820Sjeff#include <linux/spinlock.h> 33219820Sjeff#include <linux/sched.h> 34219820Sjeff#include <linux/list.h> 35219820Sjeff 36219820Sjeff#include <sys/param.h> 37219820Sjeff#include <sys/systm.h> 38219820Sjeff#include <sys/sleepqueue.h> 39219820Sjeff#include <sys/kernel.h> 40219820Sjeff#include <sys/proc.h> 41219820Sjeff 42219820Sjeffstruct __wait_queue_head { 43219820Sjeff unsigned int wchan; 44219820Sjeff}; 45219820Sjefftypedef struct __wait_queue_head wait_queue_head_t; 46219820Sjeff 47219820Sjeff#define init_waitqueue_head(x) 48219820Sjeff 49219820Sjeffstatic inline void 50219820Sjeff__wake_up(struct __wait_queue_head *q, int all) 51219820Sjeff{ 52219820Sjeff int wakeup_swapper; 53219820Sjeff void *c; 54219820Sjeff 55219820Sjeff c = &q->wchan; 56219820Sjeff sleepq_lock(c); 57219820Sjeff if (all) 58219820Sjeff wakeup_swapper = sleepq_broadcast(c, SLEEPQ_SLEEP, 0, 0); 59219820Sjeff else 60219820Sjeff wakeup_swapper = sleepq_signal(c, SLEEPQ_SLEEP, 0, 0); 61219820Sjeff sleepq_release(c); 62219820Sjeff if (wakeup_swapper) 63219820Sjeff kick_proc0(); 64219820Sjeff} 65219820Sjeff 66219820Sjeff#define wake_up(q) __wake_up(q, 0) 67219820Sjeff#define wake_up_nr(q, nr) __wake_up(q, 1) 68219820Sjeff#define wake_up_all(q) __wake_up(q, 1) 69219820Sjeff#define wake_up_interruptible(q) __wake_up(q, 0) 70219820Sjeff#define wake_up_interruptible_nr(q, nr) __wake_up(q, 1) 71219820Sjeff#define wake_up_interruptible_all(q, nr) __wake_up(q, 1) 72219820Sjeff 73219820Sjeff#define wait_event(q, cond) \ 74219820Sjeffdo { \ 75219820Sjeff void *c = &(q).wchan; \ 76219820Sjeff if (!(cond)) { \ 77219820Sjeff for (;;) { \ 78219820Sjeff sleepq_lock(c); \ 79219820Sjeff if (cond) { \ 80219820Sjeff sleepq_release(c); \ 81219820Sjeff break; \ 82219820Sjeff } \ 83219820Sjeff sleepq_add(c, NULL, "completion", SLEEPQ_SLEEP, 0); \ 84219820Sjeff sleepq_wait(c, 0); \ 85219820Sjeff } \ 86219820Sjeff } \ 87219820Sjeff} while (0) 88219820Sjeff 89219820Sjeff#define wait_event_interruptible(q, cond) \ 90219820Sjeff({ \ 91219820Sjeff void *c = &(q).wchan; \ 92219820Sjeff int _error; \ 93219820Sjeff \ 94219820Sjeff _error = 0; \ 95219820Sjeff if (!(cond)) { \ 96219820Sjeff for (; _error == 0;) { \ 97219820Sjeff sleepq_lock(c); \ 98219820Sjeff if (cond) { \ 99219820Sjeff sleepq_release(c); \ 100219820Sjeff break; \ 101219820Sjeff } \ 102219820Sjeff sleepq_add(c, NULL, "completion", \ 103219820Sjeff SLEEPQ_SLEEP | SLEEPQ_INTERRUPTIBLE, 0); \ 104219820Sjeff if (sleepq_wait_sig(c, 0)) \ 105219820Sjeff _error = -ERESTARTSYS; \ 106219820Sjeff } \ 107219820Sjeff } \ 108219820Sjeff -_error; \ 109219820Sjeff}) 110219820Sjeff 111219820Sjeff#define DEFINE_WAIT(x) 112219820Sjeff 113219820Sjeff#endif /* _LINUX_WAIT_H_ */ 114