vm_extern.h revision 302408 
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: stable/11/sys/vm/vm_extern.h 294344 2016-01-19 21:37:51Z jhb $
31 */
32
33#ifndef _VM_EXTERN_H_
34#define	_VM_EXTERN_H_
35
36struct pmap;
37struct proc;
38struct vmspace;
39struct vnode;
40struct vmem;
41
42#ifdef _KERNEL
43struct cdev;
44struct cdevsw;
45
46/* These operate on kernel virtual addresses only. */
47vm_offset_t kva_alloc(vm_size_t);
48void kva_free(vm_offset_t, vm_size_t);
49
50/* These operate on pageable virtual addresses. */
51vm_offset_t kmap_alloc_wait(vm_map_t, vm_size_t);
52void kmap_free_wakeup(vm_map_t, vm_offset_t, vm_size_t);
53
54/* These operate on virtual addresses backed by memory. */
55vm_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);
57vm_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);
60vm_offset_t kmem_malloc(struct vmem *, vm_size_t size, int flags);
61void kmem_free(struct vmem *, vm_offset_t, vm_size_t);
62
63/* This provides memory for previously allocated address space. */
64int kmem_back(vm_object_t, vm_offset_t, vm_size_t, int);
65void kmem_unback(vm_object_t, vm_offset_t, vm_size_t);
66
67/* Bootstrapping. */
68vm_map_t kmem_suballoc(vm_map_t, vm_offset_t *, vm_offset_t *, vm_size_t,
69    boolean_t);
70void kmem_init(vm_offset_t, vm_offset_t);
71void kmem_init_zero_region(void);
72void kmeminit(void);
73
74void swapout_procs(int);
75int kernacc(void *, int, int);
76int useracc(void *, int, int);
77int vm_fault(vm_map_t, vm_offset_t, vm_prot_t, int);
78void vm_fault_copy_entry(vm_map_t, vm_map_t, vm_map_entry_t, vm_map_entry_t,
79    vm_ooffset_t *);
80int vm_fault_disable_pagefaults(void);
81void vm_fault_enable_pagefaults(int save);
82int 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);
84int 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);
86int vm_forkproc(struct thread *, struct proc *, struct thread *,
87    struct vmspace *, int);
88void vm_waitproc(struct proc *);
89int 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);
91int 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 *);
93int vm_mmap_to_errno(int rv);
94int 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 *);
96int 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 *);
98void vm_set_page_size(void);
99void vm_sync_icache(vm_map_t, vm_offset_t, vm_size_t);
100typedef int (*pmap_pinit_t)(struct pmap *pmap);
101struct vmspace *vmspace_alloc(vm_offset_t, vm_offset_t, pmap_pinit_t);
102struct vmspace *vmspace_fork(struct vmspace *, vm_ooffset_t *);
103int vmspace_exec(struct proc *, vm_offset_t, vm_offset_t);
104int vmspace_unshare(struct proc *);
105void vmspace_exit(struct thread *);
106struct vmspace *vmspace_acquire_ref(struct proc *);
107void vmspace_free(struct vmspace *);
108void vmspace_exitfree(struct proc *);
109void vmspace_switch_aio(struct vmspace *);
110void vnode_pager_setsize(struct vnode *, vm_ooffset_t);
111int vslock(void *, size_t);
112void vsunlock(void *, size_t);
113struct sf_buf *vm_imgact_map_page(vm_object_t object, vm_ooffset_t offset);
114void vm_imgact_unmap_page(struct sf_buf *sf);
115void vm_thread_dispose(struct thread *td);
116int vm_thread_new(struct thread *td, int pages);
117int vm_mlock(struct proc *, struct ucred *, const void *, size_t);
118#endif				/* _KERNEL */
119#endif				/* !_VM_EXTERN_H_ */
120