FreeBSD/Linux Kernel Cross Reference
sys/vm/vm_param.h
1 /*-
2 * SPDX-License-Identifier: (BSD-3-Clause AND MIT-CMU)
3 *
4 * Copyright (c) 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * The Mach Operating System project at Carnegie-Mellon University.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * from: @(#)vm_param.h 8.1 (Berkeley) 6/11/93
35 *
36 *
37 * Copyright (c) 1987, 1990 Carnegie-Mellon University.
38 * All rights reserved.
39 *
40 * Authors: Avadis Tevanian, Jr., Michael Wayne Young
41 *
42 * Permission to use, copy, modify and distribute this software and
43 * its documentation is hereby granted, provided that both the copyright
44 * notice and this permission notice appear in all copies of the
45 * software, derivative works or modified versions, and any portions
46 * thereof, and that both notices appear in supporting documentation.
47 *
48 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
49 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
50 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
51 *
52 * Carnegie Mellon requests users of this software to return to
53 *
54 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
55 * School of Computer Science
56 * Carnegie Mellon University
57 * Pittsburgh PA 15213-3890
58 *
59 * any improvements or extensions that they make and grant Carnegie the
60 * rights to redistribute these changes.
61 *
62 * $FreeBSD$
63 */
64
65 /*
66 * Machine independent virtual memory parameters.
67 */
68
69 #ifndef _VM_PARAM_
70 #define _VM_PARAM_
71
72 #include <machine/vmparam.h>
73
74 /*
75 * CTL_VM identifiers
76 */
77 #define VM_TOTAL 1 /* struct vmtotal */
78 #define VM_METER VM_TOTAL/* deprecated, use VM_TOTAL */
79 #define VM_LOADAVG 2 /* struct loadavg */
80 #define VM_V_FREE_MIN 3 /* vm_cnt.v_free_min */
81 #define VM_V_FREE_TARGET 4 /* vm_cnt.v_free_target */
82 #define VM_V_FREE_RESERVED 5 /* vm_cnt.v_free_reserved */
83 #define VM_V_INACTIVE_TARGET 6 /* vm_cnt.v_inactive_target */
84 #define VM_OBSOLETE_7 7 /* unused, formerly v_cache_min */
85 #define VM_OBSOLETE_8 8 /* unused, formerly v_cache_max */
86 #define VM_V_PAGEOUT_FREE_MIN 9 /* vm_cnt.v_pageout_free_min */
87 #define VM_OBSOLETE_10 10 /* pageout algorithm */
88 #define VM_SWAPPING_ENABLED 11 /* swapping enabled */
89 #define VM_OVERCOMMIT 12 /* vm.overcommit */
90 #define VM_MAXID 13 /* number of valid vm ids */
91
92 /*
93 * Structure for swap device statistics
94 */
95 #define XSWDEV_VERSION 2
96 struct xswdev {
97 u_int xsw_version;
98 dev_t xsw_dev;
99 int xsw_flags;
100 int xsw_nblks;
101 int xsw_used;
102 };
103
104 /*
105 * Return values from the VM routines.
106 */
107 #define KERN_SUCCESS 0
108 #define KERN_INVALID_ADDRESS 1
109 #define KERN_PROTECTION_FAILURE 2
110 #define KERN_NO_SPACE 3
111 #define KERN_INVALID_ARGUMENT 4
112 #define KERN_FAILURE 5
113 #define KERN_RESOURCE_SHORTAGE 6
114 #define KERN_NOT_RECEIVER 7
115 #define KERN_NO_ACCESS 8
116 #define KERN_OUT_OF_BOUNDS 9
117 #define KERN_RESTART 10
118
119 #ifndef PA_LOCK_COUNT
120 #ifdef SMP
121 #define PA_LOCK_COUNT 32
122 #else
123 #define PA_LOCK_COUNT 1
124 #endif /* !SMP */
125 #endif /* !PA_LOCK_COUNT */
126
127 #ifndef KSTACK_MAX_PAGES
128 #define KSTACK_MAX_PAGES 32
129 #endif
130
131 #ifndef PHYS_AVAIL_ENTRIES
132 #define PHYS_AVAIL_ENTRIES (VM_PHYSSEG_MAX * 2)
133 #endif
134 #define PHYS_AVAIL_COUNT (PHYS_AVAIL_ENTRIES + 2)
135
136 #ifndef ASSEMBLER
137 #ifdef _KERNEL
138 #define num_pages(x) \
139 ((vm_offset_t)((((vm_offset_t)(x)) + PAGE_MASK) >> PAGE_SHIFT))
140 extern unsigned long maxtsiz;
141 extern unsigned long dfldsiz;
142 extern unsigned long maxdsiz;
143 extern unsigned long dflssiz;
144 extern unsigned long maxssiz;
145 extern unsigned long sgrowsiz;
146 #endif /* _KERNEL */
147 #endif /* ASSEMBLER */
148 #endif /* _VM_PARAM_ */
Cache object: 5ccf56f0a14a95e91794b6b8a9fa3b60
|