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_min */
83 #define VM_V_CACHE_MAX 8 /* cnt.v_cache_max */
84 #define VM_V_PAGEOUT_FREE_MIN 9 /* cnt.v_pageout_free_min */
85 #define VM_OBSOLETE_10 10 /* pageout algorithm */
86 #define VM_SWAPPING_ENABLED 11 /* swapping enabled */
87 #define VM_MAXID 12 /* number of valid vm ids */
88
89 /*
90 * Structure for swap device statistics
91 */
92 #define XSWDEV_VERSION 1
93 struct xswdev {
94 u_int xsw_version;
95 dev_t xsw_dev;
96 int xsw_flags;
97 int xsw_nblks;
98 int xsw_used;
99 };
100
101 /*
102 * Return values from the VM routines.
103 */
104 #define KERN_SUCCESS 0
105 #define KERN_INVALID_ADDRESS 1
106 #define KERN_PROTECTION_FAILURE 2
107 #define KERN_NO_SPACE 3
108 #define KERN_INVALID_ARGUMENT 4
109 #define KERN_FAILURE 5
110 #define KERN_RESOURCE_SHORTAGE 6
111 #define KERN_NOT_RECEIVER 7
112 #define KERN_NO_ACCESS 8
113
114 #ifndef PA_LOCK_COUNT
115 #ifdef SMP
116 #define PA_LOCK_COUNT 32
117 #else
118 #define PA_LOCK_COUNT 1
119 #endif /* !SMP */
120 #endif /* !PA_LOCK_COUNT */
121
122 #ifndef ASSEMBLER
123 #ifdef _KERNEL
124 #define num_pages(x) \
125 ((vm_offset_t)((((vm_offset_t)(x)) + PAGE_MASK) >> PAGE_SHIFT))
126 extern unsigned long maxtsiz;
127 extern unsigned long dfldsiz;
128 extern unsigned long maxdsiz;
129 extern unsigned long dflssiz;
130 extern unsigned long maxssiz;
131 extern unsigned long sgrowsiz;
132 #endif /* _KERNEL */
133 #endif /* ASSEMBLER */
134 #endif /* _VM_PARAM_ */
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