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/*-
* Copyright (c) 2016 Mellanox Technologies, Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _LINUX_RCUPDATE_H_
#define _LINUX_RCUPDATE_H_
#include <sys/param.h>
#include <sys/lock.h>
#include <sys/sx.h>
extern struct sx linux_global_rcu_lock;
struct rcu_head {
};
typedef void (*rcu_callback_t)(struct rcu_head *);
static inline void
call_rcu(struct rcu_head *ptr, rcu_callback_t func)
{
sx_xlock(&linux_global_rcu_lock);
func(ptr);
sx_xunlock(&linux_global_rcu_lock);
}
static inline void
rcu_read_lock(void)
{
sx_slock(&linux_global_rcu_lock);
}
static inline void
rcu_read_unlock(void)
{
sx_sunlock(&linux_global_rcu_lock);
}
static inline void
rcu_barrier(void)
{
sx_xlock(&linux_global_rcu_lock);
sx_xunlock(&linux_global_rcu_lock);
}
static inline void
synchronize_rcu(void)
{
sx_xlock(&linux_global_rcu_lock);
sx_xunlock(&linux_global_rcu_lock);
}
#define hlist_add_head_rcu(n, h) \
do { \
sx_xlock(&linux_global_rcu_lock); \
hlist_add_head(n, h); \
sx_xunlock(&linux_global_rcu_lock); \
} while (0)
#define hlist_del_init_rcu(n) \
do { \
sx_xlock(&linux_global_rcu_lock); \
hlist_del_init(n); \
sx_xunlock(&linux_global_rcu_lock); \
} while (0)
#define hlist_del_rcu(n) \
do { \
sx_xlock(&linux_global_rcu_lock); \
hlist_del(n); \
sx_xunlock(&linux_global_rcu_lock); \
} while (0)
#endif /* _LINUX_RCUPDATE_H_ */
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