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