vm_extern.h revision 269433
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: head/sys/vm/vm_extern.h 269433 2014-08-02 16:10:24Z alc $ 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 43 44/* These operate on kernel virtual addresses only. */ 45vm_offset_t kva_alloc(vm_size_t); 46void kva_free(vm_offset_t, vm_size_t); 47 48/* These operate on pageable virtual addresses. */ 49vm_offset_t kmap_alloc_wait(vm_map_t, vm_size_t); 50void kmap_free_wakeup(vm_map_t, vm_offset_t, vm_size_t); 51 52/* These operate on virtual addresses backed by memory. */ 53vm_offset_t kmem_alloc_attr(struct vmem *, vm_size_t size, int flags, 54 vm_paddr_t low, vm_paddr_t high, vm_memattr_t memattr); 55vm_offset_t kmem_alloc_contig(struct vmem *, vm_size_t size, int flags, 56 vm_paddr_t low, vm_paddr_t high, u_long alignment, vm_paddr_t boundary, 57 vm_memattr_t memattr); 58vm_offset_t kmem_malloc(struct vmem *, vm_size_t size, int flags); 59void kmem_free(struct vmem *, vm_offset_t, vm_size_t); 60 61/* This provides memory for previously allocated address space. */ 62int kmem_back(vm_object_t, vm_offset_t, vm_size_t, int); 63void kmem_unback(vm_object_t, vm_offset_t, vm_size_t); 64 65/* Bootstrapping. */ 66vm_map_t kmem_suballoc(vm_map_t, vm_offset_t *, vm_offset_t *, vm_size_t, 67 boolean_t); 68void kmem_init(vm_offset_t, vm_offset_t); 69void kmem_init_zero_region(void); 70void kmeminit(void); 71 72void swapout_procs(int); 73int kernacc(void *, int, int); 74int useracc(void *, int, int); 75int vm_fault(vm_map_t, vm_offset_t, vm_prot_t, int); 76void vm_fault_copy_entry(vm_map_t, vm_map_t, vm_map_entry_t, vm_map_entry_t, 77 vm_ooffset_t *); 78int vm_fault_disable_pagefaults(void); 79void vm_fault_enable_pagefaults(int save); 80int vm_fault_hold(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type, 81 int fault_flags, vm_page_t *m_hold); 82int vm_fault_quick_hold_pages(vm_map_t map, vm_offset_t addr, vm_size_t len, 83 vm_prot_t prot, vm_page_t *ma, int max_count); 84int vm_forkproc(struct thread *, struct proc *, struct thread *, struct vmspace *, int); 85void vm_waitproc(struct proc *); 86int vm_mmap(vm_map_t, vm_offset_t *, vm_size_t, vm_prot_t, vm_prot_t, int, objtype_t, void *, vm_ooffset_t); 87int vm_mmap_to_errno(int rv); 88void vm_set_page_size(void); 89void vm_sync_icache(vm_map_t, vm_offset_t, vm_size_t); 90typedef int (*pmap_pinit_t)(struct pmap *pmap); 91struct vmspace *vmspace_alloc(vm_offset_t, vm_offset_t, pmap_pinit_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