sys/vm/vm_param.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  * 4. 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_param.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  * $FreeBSD$
  61  */
  62
  63 /*
  64  *      Machine independent virtual memory parameters.
  65  */
  66
  67 #ifndef _VM_PARAM_
  68 #define _VM_PARAM_
  69
  70 #include <machine/vmparam.h>
  71
  72 /*
  73  * CTL_VM identifiers
  74  */
  75 #define VM_TOTAL                1       /* struct vmtotal */
  76 #define VM_METER                VM_TOTAL/* deprecated, use VM_TOTAL */
  77 #define VM_LOADAVG              2       /* struct loadavg */
  78 #define VM_V_FREE_MIN           3       /* vm_cnt.v_free_min */
  79 #define VM_V_FREE_TARGET        4       /* vm_cnt.v_free_target */
  80 #define VM_V_FREE_RESERVED      5       /* vm_cnt.v_free_reserved */
  81 #define VM_V_INACTIVE_TARGET    6       /* vm_cnt.v_inactive_target */
  82 #define VM_OBSOLETE_7           7       /* unused, formerly v_cache_min */
  83 #define VM_OBSOLETE_8           8       /* unused, formerly v_cache_max */
  84 #define VM_V_PAGEOUT_FREE_MIN   9       /* vm_cnt.v_pageout_free_min */
  85 #define VM_OBSOLETE_10          10      /* pageout algorithm */
  86 #define VM_SWAPPING_ENABLED     11      /* swapping enabled */
  87 #define VM_MAXID                12      /* number of valid vm ids */
  88
  89 /*
  90  * Structure for swap device statistics
  91  */
  92 #define XSWDEV_VERSION  1
  93 struct xswdev {
  94         u_int   xsw_version;
  95         dev_t   xsw_dev;
  96         int     xsw_flags;
  97         int     xsw_nblks;
  98         int     xsw_used;
  99 };
 100
 101 /*
 102  *      Return values from the VM routines.
 103  */
 104 #define KERN_SUCCESS            0
 105 #define KERN_INVALID_ADDRESS    1
 106 #define KERN_PROTECTION_FAILURE 2
 107 #define KERN_NO_SPACE           3
 108 #define KERN_INVALID_ARGUMENT   4
 109 #define KERN_FAILURE            5
 110 #define KERN_RESOURCE_SHORTAGE  6
 111 #define KERN_NOT_RECEIVER       7
 112 #define KERN_NO_ACCESS          8
 113
 114 #ifndef PA_LOCK_COUNT
 115 #ifdef SMP
 116 #define PA_LOCK_COUNT   32
 117 #else
 118 #define PA_LOCK_COUNT   1
 119 #endif  /* !SMP */
 120 #endif  /* !PA_LOCK_COUNT */
 121
 122 #ifndef ASSEMBLER
 123 #ifdef _KERNEL
 124 #define num_pages(x) \
 125         ((vm_offset_t)((((vm_offset_t)(x)) + PAGE_MASK) >> PAGE_SHIFT))
 126 extern  unsigned long maxtsiz;
 127 extern  unsigned long dfldsiz;
 128 extern  unsigned long maxdsiz;
 129 extern  unsigned long dflssiz;
 130 extern  unsigned long maxssiz;
 131 extern  unsigned long sgrowsiz;
 132 #endif                          /* _KERNEL */
 133 #endif                          /* ASSEMBLER */
 134 #endif                          /* _VM_PARAM_ */