vm_param.h revision 109496 
1/*
2 * Copyright (c) 1991, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * The Mach Operating System project at Carnegie-Mellon University.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 *	from: @(#)vm_param.h	8.1 (Berkeley) 6/11/93
37 *
38 *
39 * Copyright (c) 1987, 1990 Carnegie-Mellon University.
40 * All rights reserved.
41 *
42 * Authors: Avadis Tevanian, Jr., Michael Wayne Young
43 *
44 * Permission to use, copy, modify and distribute this software and
45 * its documentation is hereby granted, provided that both the copyright
46 * notice and this permission notice appear in all copies of the
47 * software, derivative works or modified versions, and any portions
48 * thereof, and that both notices appear in supporting documentation.
49 *
50 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
51 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
52 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
53 *
54 * Carnegie Mellon requests users of this software to return to
55 *
56 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
57 *  School of Computer Science
58 *  Carnegie Mellon University
59 *  Pittsburgh PA 15213-3890
60 *
61 * any improvements or extensions that they make and grant Carnegie the
62 * rights to redistribute these changes.
63 *
64 * $FreeBSD: head/sys/vm/vm_param.h 109496 2003-01-18 21:14:02Z obrien $
65 */
66
67/*
68 *	Machine independent virtual memory parameters.
69 */
70
71#ifndef	_VM_PARAM_
72#define	_VM_PARAM_
73
74#include <machine/vmparam.h>
75
76/*
77 * CTL_VM identifiers
78 */
79#define	VM_TOTAL		1	/* struct vmtotal */
80#define	VM_METER                VM_TOTAL/* deprecated, use VM_TOTAL */
81#define	VM_LOADAVG	 	2	/* struct loadavg */
82#define VM_V_FREE_MIN		3	/* cnt.v_free_min */
83#define VM_V_FREE_TARGET	4	/* cnt.v_free_target */
84#define VM_V_FREE_RESERVED	5	/* cnt.v_free_reserved */
85#define VM_V_INACTIVE_TARGET	6	/* cnt.v_inactive_target */
86#define VM_V_CACHE_MIN		7	/* cnt.v_cache_max */
87#define VM_V_CACHE_MAX		8	/* cnt.v_cache_min */
88#define VM_V_PAGEOUT_FREE_MIN	9	/* cnt.v_pageout_free_min */
89#define	VM_PAGEOUT_ALGORITHM	10	/* pageout algorithm */
90#define VM_SWAPPING_ENABLED	11	/* swapping enabled */
91#define	VM_MAXID		12	/* number of valid vm ids */
92
93#define CTL_VM_NAMES { \
94	{ 0, 0 }, \
95	{ "vmtotal", CTLTYPE_STRUCT }, \
96	{ "loadavg", CTLTYPE_STRUCT }, \
97	{ "v_free_min", CTLTYPE_INT }, \
98	{ "v_free_target", CTLTYPE_INT }, \
99	{ "v_free_reserved", CTLTYPE_INT }, \
100	{ "v_inactive_target", CTLTYPE_INT }, \
101	{ "v_cache_min", CTLTYPE_INT }, \
102	{ "v_cache_max", CTLTYPE_INT }, \
103	{ "v_pageout_free_min", CTLTYPE_INT}, \
104	{ "pageout_algorithm", CTLTYPE_INT}, \
105	{ "swapping_enabled", CTLTYPE_INT},\
106}
107
108/*
109 * Structure for swap device statistics
110 */
111#define XSWDEV_VERSION	1
112struct xswdev {
113	u_int	xsw_version;
114	udev_t	xsw_dev;
115	int	xsw_flags;
116	int	xsw_nblks;
117	int     xsw_used;
118};
119
120/*
121 *	Return values from the VM routines.
122 */
123#define	KERN_SUCCESS		0
124#define	KERN_INVALID_ADDRESS	1
125#define	KERN_PROTECTION_FAILURE	2
126#define	KERN_NO_SPACE		3
127#define	KERN_INVALID_ARGUMENT	4
128#define	KERN_FAILURE		5
129#define	KERN_RESOURCE_SHORTAGE	6
130#define	KERN_NOT_RECEIVER	7
131#define	KERN_NO_ACCESS		8
132
133#ifndef ASSEMBLER
134#ifdef _KERNEL
135#define num_pages(x) \
136	((vm_offset_t)((((vm_offset_t)(x)) + PAGE_MASK) >> PAGE_SHIFT))
137extern	u_quad_t maxtsiz;
138extern	u_quad_t dfldsiz;
139extern	u_quad_t maxdsiz;
140extern	u_quad_t dflssiz;
141extern	u_quad_t maxssiz;
142extern	u_quad_t sgrowsiz;
143#endif				/* _KERNEL */
144#endif				/* ASSEMBLER */
145#endif				/* _VM_PARAM_ */
146