65 lines
2.2 KiB
C
65 lines
2.2 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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* Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
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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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* $FreeBSD$
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*/
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#ifndef _LINUX_MUTEX_H_
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#define _LINUX_MUTEX_H_
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#include <sys/param.h>
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#include <sys/lock.h>
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#include <sys/sx.h>
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#include <linux/spinlock.h>
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typedef struct mutex {
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struct sx sx;
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} mutex_t;
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#define mutex_lock(_m) sx_xlock(&(_m)->sx)
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#define mutex_lock_nested(_m, _s) mutex_lock(_m)
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#define mutex_lock_interruptible(_m) ({ mutex_lock((_m)); 0; })
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#define mutex_unlock(_m) sx_xunlock(&(_m)->sx)
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#define mutex_trylock(_m) !!sx_try_xlock(&(_m)->sx)
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#define DEFINE_MUTEX(lock) \
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mutex_t lock; \
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SX_SYSINIT_FLAGS(lock, &(lock).sx, "lnxmtx", SX_NOWITNESS)
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static inline void
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linux_mutex_init(mutex_t *m)
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{
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memset(&m->sx, 0, sizeof(m->sx));
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sx_init_flags(&m->sx, "lnxmtx", SX_NOWITNESS);
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}
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#define mutex_init(m) linux_mutex_init(m)
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#endif /* _LINUX_MUTEX_H_ */
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