1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/* $NetBSD: uvm_map_i.h,v 1.26 2003/11/01 11:09:02 yamt Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
* Copyright (c) 1991, 1993, The Regents of the University of California.
*
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* The Mach Operating System project at Carnegie-Mellon University.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles D. Cranor,
* Washington University, the University of California, Berkeley and
* its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)vm_map.c 8.3 (Berkeley) 1/12/94
* from: Id: uvm_map_i.h,v 1.1.2.1 1997/08/14 19:10:50 chuck Exp
*
*
* Copyright (c) 1987, 1990 Carnegie-Mellon University.
* All rights reserved.
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* uvm_map_i.h
*/
/*
* inline functions [maybe]
*/
#if defined(UVM_MAP_INLINE) || defined(UVM_MAP)
#ifndef _UVM_UVM_MAP_I_H_
#define _UVM_UVM_MAP_I_H_
/*
* uvm_map_create: create map
*/
MAP_INLINE struct vm_map *
uvm_map_create(pmap_t pmap, vaddr_t min, vaddr_t max, int flags)
{
struct vm_map *result;
MALLOC(result, struct vm_map *, sizeof(struct vm_map),
M_VMMAP, M_WAITOK);
uvm_map_setup(result, min, max, flags);
result->pmap = pmap;
return(result);
}
/*
* uvm_map_setup: init map
*
* => map must not be in service yet.
*/
MAP_INLINE void
uvm_map_setup(struct vm_map *map, vaddr_t min, vaddr_t max, int flags)
{
RB_INIT(&map->rbhead);
map->header.next = map->header.prev = &map->header;
map->nentries = 0;
map->size = 0;
map->ref_count = 1;
map->min_offset = min;
map->max_offset = max;
map->flags = flags;
map->first_free = &map->header;
map->hint = &map->header;
map->timestamp = 0;
lockinit(&map->lock, PVM, "vmmaplk", 0, 0);
simple_lock_init(&map->ref_lock);
simple_lock_init(&map->hint_lock);
simple_lock_init(&map->flags_lock);
}
/*
* U N M A P - m a i n e n t r y p o i n t
*/
/*
* uvm_unmap: remove mappings from a vm_map (from "start" up to "stop")
*
* => caller must check alignment and size
* => map must be unlocked (we will lock it)
*/
MAP_INLINE void
uvm_unmap(struct vm_map *map, vaddr_t start, vaddr_t end)
{
struct vm_map_entry *dead_entries;
UVMHIST_FUNC("uvm_unmap"); UVMHIST_CALLED(maphist);
UVMHIST_LOG(maphist, " (map=0x%x, start=0x%x, end=0x%x)",
map, start, end, 0);
/*
* work now done by helper functions. wipe the pmap's and then
* detach from the dead entries...
*/
vm_map_lock(map);
uvm_unmap_remove(map, start, end, &dead_entries);
vm_map_unlock(map);
if (dead_entries != NULL)
uvm_unmap_detach(dead_entries, 0);
UVMHIST_LOG(maphist, "<- done", 0,0,0,0);
}
/*
* uvm_map_reference: add reference to a map
*
* => map need not be locked (we use ref_lock).
*/
MAP_INLINE void
uvm_map_reference(struct vm_map *map)
{
simple_lock(&map->ref_lock);
map->ref_count++;
simple_unlock(&map->ref_lock);
}
#endif /* _UVM_UVM_MAP_I_H_ */
#endif /* defined(UVM_MAP_INLINE) || defined(UVM_MAP) */
|