sys/vm/vm_kern.h

   1 /*
   2  * Copyright (c) 1991, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * The Mach Operating System project at Carnegie-Mellon University.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  *      from: @(#)vm_kern.h     8.1 (Berkeley) 6/11/93
  33  *
  34  *
  35  * Copyright (c) 1987, 1990 Carnegie-Mellon University.
  36  * All rights reserved.
  37  *
  38  * Authors: Avadis Tevanian, Jr., Michael Wayne Young
  39  *
  40  * Permission to use, copy, modify and distribute this software and
  41  * its documentation is hereby granted, provided that both the copyright
  42  * notice and this permission notice appear in all copies of the
  43  * software, derivative works or modified versions, and any portions
  44  * thereof, and that both notices appear in supporting documentation.
  45  *
  46  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  47  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
  48  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  49  *
  50  * Carnegie Mellon requests users of this software to return to
  51  *
  52  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  53  *  School of Computer Science
  54  *  Carnegie Mellon University
  55  *  Pittsburgh PA 15213-3890
  56  *
  57  * any improvements or extensions that they make and grant Carnegie the
  58  * rights to redistribute these changes.
  59  *
  60  * $FreeBSD: src/sys/vm/vm_kern.h,v 1.22 2000/02/16 21:11:31 dillon Exp $
  61  * $DragonFly: src/sys/vm/vm_kern.h,v 1.12 2007/06/07 23:14:29 dillon Exp $
  62  */
  63
  64 #ifndef _VM_VM_KERN_H_
  65 #define _VM_VM_KERN_H_
  66
  67 #ifndef _SYS_TYPES_H_
  68 #include <sys/types.h>
  69 #endif
  70 #ifndef _VM_VM_MAP_H_
  71 #include <vm/vm_map.h>
  72 #endif
  73
  74 struct vm_object;
  75
  76 /*
  77  * Anonymous swap-backed kernel memory descriptor
  78  */
  79 struct kmem_anon_desc {
  80         vm_map_t        map;
  81         vm_size_t       size;
  82         vm_offset_t     data;
  83         struct vm_object *object;
  84 };
  85
  86 typedef struct kmem_anon_desc kmem_anon_desc_t;
  87
  88 /*
  89  * kmem_alloc3() flags
  90  */
  91 #define KM_PAGEABLE     0x00000001
  92 #define KM_KRESERVE     0x00000002
  93 #define KM_STACK        0x00000004
  94 #define KM_NOTLBSYNC    0x00000008
  95 #define KM_CPU_SPEC     0x00000010
  96
  97 #define KM_CPU_SHIFT    16
  98 #define KM_CPU(n)       (((n) << KM_CPU_SHIFT) | KM_CPU_SPEC)
  99 #define KM_GETCPU(flags) ((flags) >> KM_CPU_SHIFT)
 100
 101 /* Kernel memory management definitions. */
 102 extern struct vm_map buffer_map;
 103 extern struct vm_map kernel_map;
 104 extern struct vm_map clean_map;
 105 extern u_int vm_kmem_size;
 106
 107 extern vm_offset_t kernel_vm_end;
 108 /* XXX - elsewhere? */
 109 struct malloc_type;
 110 extern void *contigmalloc_map(u_long, struct malloc_type *, int,
 111                 vm_paddr_t, vm_paddr_t, u_long, u_long, vm_map_t);
 112
 113 #endif                          /* _VM_VM_KERN_H_ */