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/*-
* Copyright (c) 1998 Matthew Dillon. 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, 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.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/linker_set.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/sysctl.h>
#include <sys/proc.h>
#include <sys/vmmeter.h>
#include <sys/vnode.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_kern.h>
#include <vm/vm_object.h>
#include <vm/vm_page.h>
#include <vm/vm_pageout.h>
#include <vm/vm_pager.h>
#include <vm/vm_phys.h>
#include <vm/vm_extern.h>
struct vpgqueues vm_page_queues[PQ_MAXCOUNT];
void
vm_pageq_init(void)
{
int i;
vm_page_queues[PQ_INACTIVE].cnt = &cnt.v_inactive_count;
vm_page_queues[PQ_ACTIVE].cnt = &cnt.v_active_count;
vm_page_queues[PQ_HOLD].cnt = &cnt.v_active_count;
for (i = 0; i < PQ_COUNT; i++) {
TAILQ_INIT(&vm_page_queues[i].pl);
}
}
void
vm_pageq_requeue(vm_page_t m)
{
int queue = VM_PAGE_GETQUEUE(m);
struct vpgqueues *vpq;
if (queue != PQ_NONE) {
vpq = &vm_page_queues[queue];
TAILQ_REMOVE(&vpq->pl, m, pageq);
TAILQ_INSERT_TAIL(&vpq->pl, m, pageq);
}
}
/*
* vm_pageq_enqueue:
*/
void
vm_pageq_enqueue(int queue, vm_page_t m)
{
struct vpgqueues *vpq;
vpq = &vm_page_queues[queue];
VM_PAGE_SETQUEUE2(m, queue);
TAILQ_INSERT_TAIL(&vpq->pl, m, pageq);
++*vpq->cnt;
}
/*
* vm_pageq_remove:
*
* Remove a page from its queue.
*
* The queue containing the given page must be locked.
* This routine may not block.
*/
void
vm_pageq_remove(vm_page_t m)
{
int queue = VM_PAGE_GETQUEUE(m);
struct vpgqueues *pq;
if (queue != PQ_NONE) {
VM_PAGE_SETQUEUE2(m, PQ_NONE);
pq = &vm_page_queues[queue];
TAILQ_REMOVE(&pq->pl, m, pageq);
(*pq->cnt)--;
}
}
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