FreeBSD/Linux Kernel Cross Reference
sys/vm/vm_extern.h
1 /*-
2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)vm_extern.h 8.2 (Berkeley) 1/12/94
30 * $FreeBSD$
31 */
32
33 #ifndef _VM_EXTERN_H_
34 #define _VM_EXTERN_H_
35
36 struct pmap;
37 struct proc;
38 struct vmspace;
39 struct vnode;
40 struct vmem;
41
42 #ifdef _KERNEL
43 struct cdev;
44 struct cdevsw;
45
46 /* These operate on kernel virtual addresses only. */
47 vm_offset_t kva_alloc(vm_size_t);
48 void kva_free(vm_offset_t, vm_size_t);
49
50 /* These operate on pageable virtual addresses. */
51 vm_offset_t kmap_alloc_wait(vm_map_t, vm_size_t);
52 void kmap_free_wakeup(vm_map_t, vm_offset_t, vm_size_t);
53
54 /* These operate on virtual addresses backed by memory. */
55 vm_offset_t kmem_alloc_attr(struct vmem *, vm_size_t size, int flags,
56 vm_paddr_t low, vm_paddr_t high, vm_memattr_t memattr);
57 vm_offset_t kmem_alloc_contig(struct vmem *, vm_size_t size, int flags,
58 vm_paddr_t low, vm_paddr_t high, u_long alignment, vm_paddr_t boundary,
59 vm_memattr_t memattr);
60 vm_offset_t kmem_malloc(struct vmem *, vm_size_t size, int flags);
61 void kmem_free(struct vmem *, vm_offset_t, vm_size_t);
62
63 /* This provides memory for previously allocated address space. */
64 int kmem_back(vm_object_t, vm_offset_t, vm_size_t, int);
65 void kmem_unback(vm_object_t, vm_offset_t, vm_size_t);
66
67 /* Bootstrapping. */
68 void kmem_bootstrap_free(vm_offset_t, vm_size_t);
69 vm_map_t kmem_suballoc(vm_map_t, vm_offset_t *, vm_offset_t *, vm_size_t,
70 boolean_t);
71 void kmem_init(vm_offset_t, vm_offset_t);
72 void kmem_init_zero_region(void);
73 void kmeminit(void);
74
75 int kernacc(void *, int, int);
76 int useracc(void *, int, int);
77 int vm_fault(vm_map_t, vm_offset_t, vm_prot_t, int);
78 void vm_fault_copy_entry(vm_map_t, vm_map_t, vm_map_entry_t, vm_map_entry_t,
79 vm_ooffset_t *);
80 int vm_fault_disable_pagefaults(void);
81 void vm_fault_enable_pagefaults(int save);
82 int vm_fault_hold(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type,
83 int fault_flags, vm_page_t *m_hold);
84 int vm_fault_quick_hold_pages(vm_map_t map, vm_offset_t addr, vm_size_t len,
85 vm_prot_t prot, vm_page_t *ma, int max_count);
86 int vm_forkproc(struct thread *, struct proc *, struct thread *,
87 struct vmspace *, int);
88 void vm_waitproc(struct proc *);
89 int vm_mmap(vm_map_t, vm_offset_t *, vm_size_t, vm_prot_t, vm_prot_t, int,
90 objtype_t, void *, vm_ooffset_t);
91 int vm_mmap_object(vm_map_t, vm_offset_t *, vm_size_t, vm_prot_t,
92 vm_prot_t, int, vm_object_t, vm_ooffset_t, boolean_t, struct thread *);
93 int vm_mmap_to_errno(int rv);
94 int vm_mmap_cdev(struct thread *, vm_size_t, vm_prot_t, vm_prot_t *,
95 int *, struct cdev *, struct cdevsw *, vm_ooffset_t *, vm_object_t *);
96 int vm_mmap_vnode(struct thread *, vm_size_t, vm_prot_t, vm_prot_t *, int *,
97 struct vnode *, vm_ooffset_t *, vm_object_t *, boolean_t *);
98 void vm_set_page_size(void);
99 void vm_sync_icache(vm_map_t, vm_offset_t, vm_size_t);
100 typedef int (*pmap_pinit_t)(struct pmap *pmap);
101 struct vmspace *vmspace_alloc(vm_offset_t, vm_offset_t, pmap_pinit_t);
102 struct vmspace *vmspace_fork(struct vmspace *, vm_ooffset_t *);
103 int vmspace_exec(struct proc *, vm_offset_t, vm_offset_t);
104 int vmspace_unshare(struct proc *);
105 void vmspace_exit(struct thread *);
106 struct vmspace *vmspace_acquire_ref(struct proc *);
107 void vmspace_free(struct vmspace *);
108 void vmspace_exitfree(struct proc *);
109 void vmspace_switch_aio(struct vmspace *);
110 void vnode_pager_setsize(struct vnode *, vm_ooffset_t);
111 int vslock(void *, size_t);
112 void vsunlock(void *, size_t);
113 struct sf_buf *vm_imgact_map_page(vm_object_t object, vm_ooffset_t offset);
114 void vm_imgact_unmap_page(struct sf_buf *sf);
115 void vm_thread_dispose(struct thread *td);
116 int vm_thread_new(struct thread *td, int pages);
117 #endif /* _KERNEL */
118 #endif /* !_VM_EXTERN_H_ */
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