vm_extern.h revision 254025 
1169689Skan/*-
2169689Skan * Copyright (c) 1992, 1993
3169689Skan *	The Regents of the University of California.  All rights reserved.
4169689Skan *
5169689Skan * Redistribution and use in source and binary forms, with or without
6169689Skan * modification, are permitted provided that the following conditions
7169689Skan * are met:
8169689Skan * 1. Redistributions of source code must retain the above copyright
9169689Skan *    notice, this list of conditions and the following disclaimer.
10169689Skan * 2. Redistributions in binary form must reproduce the above copyright
11169689Skan *    notice, this list of conditions and the following disclaimer in the
12169689Skan *    documentation and/or other materials provided with the distribution.
13169689Skan * 4. Neither the name of the University nor the names of its contributors
14169689Skan *    may be used to endorse or promote products derived from this software
15169689Skan *    without specific prior written permission.
16169689Skan *
17169689Skan * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18169689Skan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19169689Skan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20169689Skan * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21169689Skan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22169689Skan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23169689Skan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24169689Skan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25169689Skan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26169689Skan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27169689Skan * SUCH DAMAGE.
28169689Skan *
29169689Skan *	@(#)vm_extern.h	8.2 (Berkeley) 1/12/94
30169689Skan * $FreeBSD: head/sys/vm/vm_extern.h 254025 2013-08-07 06:21:20Z jeff $
31169689Skan */
32169689Skan
33169689Skan#ifndef _VM_EXTERN_H_
34169689Skan#define	_VM_EXTERN_H_
35169689Skan
36169689Skanstruct proc;
37169689Skanstruct vmspace;
38169689Skanstruct vnode;
39169689Skanstruct vmem;
40169689Skan
41169689Skan#ifdef _KERNEL
42169689Skan
43169689Skan/* These operate on kernel virtual addresses only. */
44169689Skanvm_offset_t kva_alloc(vm_size_t);
45169689Skanvoid kva_free(vm_offset_t, vm_size_t);
46169689Skan
47169689Skan/* These operate on pageable virtual addresses. */
48169689Skanvm_offset_t kmap_alloc_wait(vm_map_t, vm_size_t);
49169689Skanvoid kmap_free_wakeup(vm_map_t, vm_offset_t, vm_size_t);
50
51/* These operate on virtual addresses backed by memory. */
52vm_offset_t kmem_alloc_attr(struct vmem *, vm_size_t size, int flags,
53    vm_paddr_t low, vm_paddr_t high, vm_memattr_t memattr);
54vm_offset_t kmem_alloc_contig(struct vmem *, vm_size_t size, int flags,
55    vm_paddr_t low, vm_paddr_t high, u_long alignment, vm_paddr_t boundary,
56    vm_memattr_t memattr);
57vm_offset_t kmem_malloc(struct vmem *, vm_size_t size, int flags);
58void kmem_free(struct vmem *, vm_offset_t, vm_size_t);
59
60/* This provides memory for previously allocated address space. */
61int kmem_back(vm_object_t, vm_offset_t, vm_size_t, int);
62void kmem_unback(vm_object_t, vm_offset_t, vm_size_t);
63
64/* Bootstrapping. */
65vm_map_t kmem_suballoc(vm_map_t, vm_offset_t *, vm_offset_t *, vm_size_t,
66    boolean_t);
67void kmem_init(vm_offset_t, vm_offset_t);
68void kmem_init_zero_region(void);
69void kmeminit(void);
70
71void swapout_procs(int);
72int kernacc(void *, int, int);
73int useracc(void *, int, int);
74int vm_fault(vm_map_t, vm_offset_t, vm_prot_t, int);
75void vm_fault_copy_entry(vm_map_t, vm_map_t, vm_map_entry_t, vm_map_entry_t,
76    vm_ooffset_t *);
77int vm_fault_disable_pagefaults(void);
78void vm_fault_enable_pagefaults(int save);
79int vm_fault_hold(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type,
80    int fault_flags, vm_page_t *m_hold);
81int vm_fault_quick_hold_pages(vm_map_t map, vm_offset_t addr, vm_size_t len,
82    vm_prot_t prot, vm_page_t *ma, int max_count);
83void vm_fault_unwire(vm_map_t, vm_offset_t, vm_offset_t, boolean_t);
84int vm_fault_wire(vm_map_t, vm_offset_t, vm_offset_t, boolean_t);
85int vm_forkproc(struct thread *, struct proc *, struct thread *, struct vmspace *, int);
86void vm_waitproc(struct proc *);
87int vm_mmap(vm_map_t, vm_offset_t *, vm_size_t, vm_prot_t, vm_prot_t, int, objtype_t, void *, vm_ooffset_t);
88int vm_mmap_to_errno(int rv);
89void vm_set_page_size(void);
90void vm_sync_icache(vm_map_t, vm_offset_t, vm_size_t);
91struct vmspace *vmspace_alloc(vm_offset_t, vm_offset_t);
92struct vmspace *vmspace_fork(struct vmspace *, vm_ooffset_t *);
93int vmspace_exec(struct proc *, vm_offset_t, vm_offset_t);
94int vmspace_unshare(struct proc *);
95void vmspace_exit(struct thread *);
96struct vmspace *vmspace_acquire_ref(struct proc *);
97void vmspace_free(struct vmspace *);
98void vmspace_exitfree(struct proc *);
99void vnode_pager_setsize(struct vnode *, vm_ooffset_t);
100int vslock(void *, size_t);
101void vsunlock(void *, size_t);
102struct sf_buf *vm_imgact_map_page(vm_object_t object, vm_ooffset_t offset);
103void vm_imgact_unmap_page(struct sf_buf *sf);
104void vm_thread_dispose(struct thread *td);
105int vm_thread_new(struct thread *td, int pages);
106int vm_mlock(struct proc *, struct ucred *, const void *, size_t);
107#endif				/* _KERNEL */
108#endif				/* !_VM_EXTERN_H_ */
109