73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
/*-
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* Copyright (c) 2015 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_SRCU_H_
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#define _LINUX_SRCU_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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struct srcu_struct {
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struct sx sx;
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};
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static inline int
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init_srcu_struct(struct srcu_struct *srcu)
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{
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sx_init(&srcu->sx, "SleepableRCU");
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return (0);
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}
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static inline void
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cleanup_srcu_struct(struct srcu_struct *srcu)
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{
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sx_destroy(&srcu->sx);
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}
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static inline int
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srcu_read_lock(struct srcu_struct *srcu)
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{
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sx_slock(&srcu->sx);
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return (0);
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}
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static inline void
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srcu_read_unlock(struct srcu_struct *srcu, int key)
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{
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sx_sunlock(&srcu->sx);
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}
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static inline void
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synchronize_srcu(struct srcu_struct *srcu)
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{
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sx_xlock(&srcu->sx);
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sx_xunlock(&srcu->sx);
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}
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#endif /* _LINUX_SRCU_H_ */
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