FreeBSD/Linux Kernel Cross Reference
sys/vm/vm_param.h
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: src/sys/vm/vm_param.h,v 1.13.2.1 2001/11/03 01:41:10 ps Exp $
65 * $DragonFly: src/sys/vm/vm_param.h,v 1.5 2006/09/12 18:41:32 dillon Exp $
66 */
67
68 /*
69 * Machine independent virtual memory parameters.
70 */
71
72 #ifndef _VM_VM_PARAM_H_
73 #define _VM_VM_PARAM_H_
74
75 #ifndef _SYS_TYPES_H_
76 #include <sys/types.h>
77 #endif
78 #ifndef _MACHINE_VMPARAM_H_
79 #include <machine/vmparam.h>
80 #endif
81
82 /*
83 * CTL_VM identifiers
84 */
85 #define VM_METER 1 /* struct vmmeter */
86 #define VM_LOADAVG 2 /* struct loadavg */
87 #define VM_V_FREE_MIN 3 /* cnt.v_free_min */
88 #define VM_V_FREE_TARGET 4 /* cnt.v_free_target */
89 #define VM_V_FREE_RESERVED 5 /* cnt.v_free_reserved */
90 #define VM_V_INACTIVE_TARGET 6 /* cnt.v_inactive_target */
91 #define VM_V_CACHE_MIN 7 /* cnt.v_cache_max */
92 #define VM_V_CACHE_MAX 8 /* cnt.v_cache_min */
93 #define VM_V_PAGEOUT_FREE_MIN 9 /* cnt.v_pageout_free_min */
94 #define VM_PAGEOUT_ALGORITHM 10 /* pageout algorithm */
95 #define VM_SWAPPING_ENABLED 11 /* swapping enabled */
96 #define VM_MAXID 12 /* number of valid vm ids */
97
98 #define CTL_VM_NAMES { \
99 { 0, 0 }, \
100 { "vmmeter", CTLTYPE_STRUCT }, \
101 { "loadavg", CTLTYPE_STRUCT }, \
102 { "v_free_min", CTLTYPE_INT }, \
103 { "v_free_target", CTLTYPE_INT }, \
104 { "v_free_reserved", CTLTYPE_INT }, \
105 { "v_inactive_target", CTLTYPE_INT }, \
106 { "v_cache_min", CTLTYPE_INT }, \
107 { "v_cache_max", CTLTYPE_INT }, \
108 { "v_pageout_free_min", CTLTYPE_INT}, \
109 { "pageout_algorithm", CTLTYPE_INT}, \
110 { "swapping_enabled", CTLTYPE_INT},\
111 }
112
113 /*
114 * Structure for swap device statistics
115 */
116 #define XSWDEV_VERSION 1
117
118 struct xswdev {
119 size_t xsw_size;
120 int xsw_version;
121 int xsw_flags;
122 dev_t xsw_dev;
123 size_t xsw_blksize;
124 size_t xsw_nblks;
125 size_t xsw_used;
126 };
127
128 /*
129 * Return values from the VM routines.
130 */
131 #define KERN_SUCCESS 0
132 #define KERN_INVALID_ADDRESS 1
133 #define KERN_PROTECTION_FAILURE 2
134 #define KERN_NO_SPACE 3
135 #define KERN_INVALID_ARGUMENT 4
136 #define KERN_FAILURE 5
137 #define KERN_RESOURCE_SHORTAGE 6
138 #define KERN_NOT_RECEIVER 7
139 #define KERN_NO_ACCESS 8
140 #define KERN_TRY_AGAIN 9
141
142 #ifndef ASSEMBLER
143 #ifdef _KERNEL
144 extern u_quad_t maxtsiz;
145 extern u_quad_t dfldsiz;
146 extern u_quad_t maxdsiz;
147 extern u_quad_t dflssiz;
148 extern u_quad_t maxssiz;
149 extern u_quad_t sgrowsiz;
150 #endif /* _KERNEL */
151 #endif /* ASSEMBLER */
152 #endif /* _VM_VM_PARAM_H_ */
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