Annotation of sys/uvm/uvm_pglist.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: uvm_pglist.h,v 1.5 2001/12/19 08:58:07 art Exp $ */
! 2: /* $NetBSD: uvm_pglist.h,v 1.3 2001/05/02 01:22:20 thorpej Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Jason R. Thorpe.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by the NetBSD
! 22: * Foundation, Inc. and its contributors.
! 23: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 24: * contributors may be used to endorse or promote products derived
! 25: * from this software without specific prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 37: * POSSIBILITY OF SUCH DAMAGE.
! 38: */
! 39:
! 40: #ifndef _PGLIST_H_
! 41: #define _PGLIST_H_
! 42:
! 43: /*
! 44: * This defines the type of a page queue, e.g. active list, inactive
! 45: * list, etc.
! 46: */
! 47: TAILQ_HEAD(pglist, vm_page);
! 48:
! 49: /*
! 50: * A page free list consists of free pages of unknown contents and free
! 51: * pages of all zeros.
! 52: */
! 53: #define PGFL_UNKNOWN 0
! 54: #define PGFL_ZEROS 1
! 55: #define PGFL_NQUEUES 2
! 56:
! 57: struct pgfreelist {
! 58: struct pglist pgfl_queues[PGFL_NQUEUES];
! 59: };
! 60:
! 61: #endif
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