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