cbbf514e2c
use both types of list. - Make page coloring and idle zero state per-CPU. - Maintain per-CPU page freelists. When freeing, put pages onto the local CPU's lists and the global lists. When allocating, prefer to take pages from the local CPU. If none are available take from the global list as done now. Proposed on tech-kern@.
59 lines
2.0 KiB
C
59 lines
2.0 KiB
C
/* $NetBSD: uvm_pglist.h,v 1.7 2008/06/04 12:45:28 ad Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2000, 2001, 2008 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Jason R. Thorpe.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``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 FOUNDATION OR CONTRIBUTORS
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef _UVM_UVM_PGLIST_H_
|
|
#define _UVM_UVM_PGLIST_H_
|
|
|
|
/*
|
|
* This defines the type of a page queue, e.g. active list, inactive
|
|
* list, etc.
|
|
*/
|
|
TAILQ_HEAD(pglist, vm_page);
|
|
LIST_HEAD(pgflist, vm_page);
|
|
|
|
/*
|
|
* A page free list consists of free pages of unknown contents and free
|
|
* pages of all zeros.
|
|
*/
|
|
#define PGFL_UNKNOWN 0
|
|
#define PGFL_ZEROS 1
|
|
#define PGFL_NQUEUES 2
|
|
|
|
struct pgflbucket {
|
|
struct pgflist pgfl_queues[PGFL_NQUEUES];
|
|
};
|
|
|
|
struct pgfreelist {
|
|
struct pgflbucket *pgfl_buckets;
|
|
};
|
|
|
|
#endif /* _UVM_UVM_PGLIST_H_ */
|