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_SPINLOCK_H_ 30219820Sjeff#define _LINUX_SPINLOCK_H_ 31219820Sjeff 32219820Sjeff#include <sys/param.h> 33219820Sjeff#include <sys/kernel.h> 34219820Sjeff#include <sys/lock.h> 35219820Sjeff#include <sys/mutex.h> 36219820Sjeff 37219820Sjeff#include <linux/compiler.h> 38219820Sjeff#include <linux/kernel.h> 39219820Sjeff#include <linux/rwlock.h> 40219820Sjeff 41219820Sjefftypedef struct { 42219820Sjeff struct mtx m; 43219820Sjeff} spinlock_t; 44219820Sjeff 45219820Sjeff#define spin_lock(_l) mtx_lock(&(_l)->m) 46219820Sjeff#define spin_unlock(_l) mtx_unlock(&(_l)->m) 47219820Sjeff#define spin_trylock(_l) mtx_trylock(&(_l)->m) 48219820Sjeff#define spin_lock_nested(_l, _n) mtx_lock_flags(&(_l)->m, MTX_DUPOK) 49219820Sjeff#define spin_lock_irq(lock) spin_lock(lock) 50219820Sjeff#define spin_unlock_irq(lock) spin_unlock(lock) 51219820Sjeff#define spin_lock_irqsave(lock, flags) \ 52219820Sjeff do {(flags) = 0; spin_lock(lock); } while (0) 53219820Sjeff#define spin_unlock_irqrestore(lock, flags) \ 54219820Sjeff do { spin_unlock(lock); } while (0) 55219820Sjeff 56219820Sjeffstatic inline void 57219820Sjeffspin_lock_init(spinlock_t *lock) 58219820Sjeff{ 59219820Sjeff 60219820Sjeff memset(&lock->m, 0, sizeof(lock->m)); 61219820Sjeff mtx_init(&lock->m, "lnxspin", NULL, MTX_DEF | MTX_NOWITNESS); 62219820Sjeff} 63219820Sjeff 64219820Sjeff#define DEFINE_SPINLOCK(lock) \ 65219820Sjeff spinlock_t lock; \ 66219820Sjeff MTX_SYSINIT(lock, &(lock).m, "lnxspin", MTX_DEF) 67219820Sjeff 68219820Sjeff#endif /* _LINUX_SPINLOCK_H_ */ 69