Annotation of sys/uvm/uvm_pglist.h, Revision 1.1.1.1
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
CVSweb