/*-
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2010 iX Systems, Inc.
* Copyright (c) 2010 Panasas, Inc.
* Copyright (c) 2013, 2014 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_WAIT_H_
#define _LINUX_WAIT_H_
#include <linux/spinlock.h>
#include <linux/sched.h>
#include <linux/list.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sleepqueue.h>
#include <sys/kernel.h>
#include <sys/proc.h>
typedef struct {
} wait_queue_t;
typedef struct {
unsigned int wchan;
} wait_queue_head_t;
#define init_waitqueue_head(x) \
do { } while (0)
#define DECLARE_WAIT_QUEUE_HEAD(x) wait_queue_head_t x = { 0 }
static inline void
__wake_up(wait_queue_head_t *q, int all)
{
int wakeup_swapper;
void *c;
c = &q->wchan;
sleepq_lock(c);
if (all)
wakeup_swapper = sleepq_broadcast(c, SLEEPQ_SLEEP, 0, 0);
else
wakeup_swapper = sleepq_signal(c, SLEEPQ_SLEEP, 0, 0);
sleepq_release(c);
if (wakeup_swapper)
kick_proc0();
}
#define wake_up(q) __wake_up(q, 0)
#define wake_up_nr(q, nr) __wake_up(q, 1)
#define wake_up_all(q) __wake_up(q, 1)
#define wake_up_interruptible(q) __wake_up(q, 0)
#define wake_up_interruptible_nr(q, nr) __wake_up(q, 1)
#define wake_up_interruptible_all(q, nr) __wake_up(q, 1)
#define wait_event(q, cond) \
do { \
void *c = &(q).wchan; \
if (!(cond)) { \
for (;;) { \
sleepq_lock(c); \
if (cond) { \
sleepq_release(c); \
break; \
} \
sleepq_add(c, NULL, "completion", SLEEPQ_SLEEP, 0); \
sleepq_wait(c, 0); \
} \
} \
} while (0)
#ifndef __rtems__
#define wait_event_interruptible(q, cond) \
({ \
void *c = &(q).wchan; \
int _error; \
\
_error = 0; \
if (!(cond)) { \
for (; _error == 0;) { \
sleepq_lock(c); \
if (cond) { \
sleepq_release(c); \
break; \
} \
sleepq_add(c, NULL, "completion", \
SLEEPQ_SLEEP | SLEEPQ_INTERRUPTIBLE, 0); \
if (sleepq_wait_sig(c, 0)) \
_error = -ERESTARTSYS; \
} \
} \
-_error; \
})
#else /* __rtems__ */
#define wait_event_interruptible(q, cond) \
({ \
wait_event(q, cond); \
0; \
})
#endif /* __rtems__ */
static inline int
waitqueue_active(wait_queue_head_t *q)
{
return 0; /* XXX: not really implemented */
}
#define DEFINE_WAIT(name) \
wait_queue_t name = {}
static inline void
prepare_to_wait(wait_queue_head_t *q, wait_queue_t *wait, int state)
{
}
static inline void
finish_wait(wait_queue_head_t *q, wait_queue_t *wait)
{
}
#endif /* _LINUX_WAIT_H_ */
