69 lines
2.5 KiB
C
69 lines
2.5 KiB
C
/*-
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* Copyright (c) 2010 Isilon Systems, Inc.
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* Copyright (c) 2010 iX Systems, Inc.
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* Copyright (c) 2010 Panasas, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LINUX_SPINLOCK_H_
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#define _LINUX_SPINLOCK_H_
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <linux/compiler.h>
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#include <linux/kernel.h>
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#include <linux/lockdep.h>
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#include <linux/rwlock.h>
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typedef struct {
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struct mtx m;
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} spinlock_t;
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#define spin_lock(_l) mtx_lock(&(_l)->m)
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#define spin_unlock(_l) mtx_unlock(&(_l)->m)
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#define spin_trylock(_l) mtx_trylock(&(_l)->m)
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#define spin_lock_nested(_l, _n) mtx_lock_flags(&(_l)->m, MTX_DUPOK)
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#define spin_lock_irq(lock) spin_lock(lock)
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#define spin_unlock_irq(lock) spin_unlock(lock)
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#define spin_lock_irqsave(lock, flags) \
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do {(flags) = 0; spin_lock(lock); } while (0)
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#define spin_unlock_irqrestore(lock, flags) \
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do { spin_unlock(lock); } while (0)
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static inline void
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spin_lock_init(spinlock_t *lock)
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{
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memset(&lock->m, 0, sizeof(lock->m));
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mtx_init(&lock->m, "lnxspin", NULL, MTX_DEF | MTX_NOWITNESS);
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}
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#define DEFINE_SPINLOCK(lock) \
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spinlock_t lock; \
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MTX_SYSINIT(lock, &(lock).m, "lnxspin", MTX_DEF)
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#endif /* _LINUX_SPINLOCK_H_ */
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