FreeBSD/Linux Kernel Cross Reference
sys/sys/vmem.h
1 /* $NetBSD: vmem.h,v 1.22 2020/06/16 06:42:36 thorpej Exp $ */
2
3 /*-
4 * Copyright (c)2006 YAMAMOTO Takashi,
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #ifndef _SYS_VMEM_H_
30 #define _SYS_VMEM_H_
31
32 #include <sys/types.h>
33
34 #if defined(_KERNEL)
35 #else /* defined(_KERNEL) */
36 #include <stdbool.h>
37 #endif /* defined(_KERNEL) */
38
39 typedef struct vmem vmem_t;
40
41 typedef unsigned int vm_flag_t;
42
43 typedef uintptr_t vmem_addr_t;
44 typedef size_t vmem_size_t;
45 #define VMEM_ADDR_MIN 0
46 #define VMEM_ADDR_MAX (~(vmem_addr_t)0)
47
48 typedef int (vmem_import_t)(vmem_t *, vmem_size_t, vm_flag_t,
49 vmem_addr_t *);
50 typedef void (vmem_release_t)(vmem_t *, vmem_addr_t, vmem_size_t);
51
52 typedef int (vmem_ximport_t)(vmem_t *, vmem_size_t, vmem_size_t *,
53 vm_flag_t, vmem_addr_t *);
54
55 extern vmem_t *kmem_arena;
56 extern vmem_t *kmem_meta_arena;
57 extern vmem_t *kmem_va_arena;
58
59 void vmem_subsystem_init(vmem_t *vm);
60
61 vmem_t * vmem_create(const char *, vmem_addr_t, vmem_size_t, vmem_size_t,
62 vmem_import_t *, vmem_release_t *, vmem_t *, vmem_size_t,
63 vm_flag_t, int);
64 vmem_t * vmem_xcreate(const char *, vmem_addr_t, vmem_size_t,
65 vmem_size_t, vmem_ximport_t *, vmem_release_t *, vmem_t *,
66 vmem_size_t, vm_flag_t, int);
67 vmem_t * vmem_init(vmem_t *, const char *, vmem_addr_t, vmem_size_t,
68 vmem_size_t, vmem_import_t *, vmem_release_t *, vmem_t *,
69 vmem_size_t, vm_flag_t, int);
70 void vmem_destroy(vmem_t *);
71 int vmem_alloc(vmem_t *, vmem_size_t, vm_flag_t, vmem_addr_t *);
72 void vmem_free(vmem_t *, vmem_addr_t, vmem_size_t);
73 int vmem_xalloc(vmem_t *, vmem_size_t, vmem_size_t, vmem_size_t,
74 vmem_size_t, vmem_addr_t, vmem_addr_t, vm_flag_t,
75 vmem_addr_t *);
76 void vmem_xfree(vmem_t *, vmem_addr_t, vmem_size_t);
77 void vmem_xfreeall(vmem_t *);
78 int vmem_add(vmem_t *, vmem_addr_t, vmem_size_t, vm_flag_t);
79 vmem_size_t vmem_roundup_size(vmem_t *, vmem_size_t);
80 vmem_size_t vmem_size(vmem_t *, int typemask);
81 void vmem_rehash_start(void);
82 void vmem_whatis(uintptr_t, void (*)(const char *, ...)
83 __printflike(1, 2));
84 void vmem_print(uintptr_t, const char *, void (*)(const char *, ...)
85 __printflike(1, 2));
86 void vmem_printall(const char *, void (*)(const char *, ...)
87 __printflike(1, 2));
88
89 /* vm_flag_t */
90 #define VM_SLEEP 0x00000001
91 #define VM_NOSLEEP 0x00000002
92 #define VM_INSTANTFIT 0x00001000
93 #define VM_BESTFIT 0x00002000
94 #define VM_BOOTSTRAP 0x00010000
95 #define VM_POPULATING 0x00040000
96 #define VM_LARGEIMPORT 0x00080000
97 #define VM_XIMPORT 0x00100000
98
99 /* vmem_size typemask */
100 #define VMEM_ALLOC 0x01
101 #define VMEM_FREE 0x02
102
103 #endif /* !_SYS_VMEM_H_ */
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