The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/vm/vm_param.h

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    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: src/sys/vm/vm_param.h,v 1.21 2005/01/07 02:29:27 imp Exp $
   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       /* cnt.v_free_min */
   79 #define VM_V_FREE_TARGET        4       /* cnt.v_free_target */
   80 #define VM_V_FREE_RESERVED      5       /* cnt.v_free_reserved */
   81 #define VM_V_INACTIVE_TARGET    6       /* cnt.v_inactive_target */
   82 #define VM_V_CACHE_MIN          7       /* cnt.v_cache_max */
   83 #define VM_V_CACHE_MAX          8       /* cnt.v_cache_min */
   84 #define VM_V_PAGEOUT_FREE_MIN   9       /* cnt.v_pageout_free_min */
   85 #define VM_PAGEOUT_ALGORITHM    10      /* pageout algorithm */
   86 #define VM_SWAPPING_ENABLED     11      /* swapping enabled */
   87 #define VM_MAXID                12      /* number of valid vm ids */
   88 
   89 #define CTL_VM_NAMES { \
   90         { 0, 0 }, \
   91         { "vmtotal", CTLTYPE_STRUCT }, \
   92         { "loadavg", CTLTYPE_STRUCT }, \
   93         { "v_free_min", CTLTYPE_INT }, \
   94         { "v_free_target", CTLTYPE_INT }, \
   95         { "v_free_reserved", CTLTYPE_INT }, \
   96         { "v_inactive_target", CTLTYPE_INT }, \
   97         { "v_cache_min", CTLTYPE_INT }, \
   98         { "v_cache_max", CTLTYPE_INT }, \
   99         { "v_pageout_free_min", CTLTYPE_INT}, \
  100         { "pageout_algorithm", CTLTYPE_INT}, \
  101         { "swapping_enabled", CTLTYPE_INT},\
  102 }
  103 
  104 /*
  105  * Structure for swap device statistics
  106  */
  107 #define XSWDEV_VERSION  1
  108 struct xswdev {
  109         u_int   xsw_version;
  110         dev_t   xsw_dev;
  111         int     xsw_flags;
  112         int     xsw_nblks;
  113         int     xsw_used;
  114 };
  115 
  116 /*
  117  *      Return values from the VM routines.
  118  */
  119 #define KERN_SUCCESS            0
  120 #define KERN_INVALID_ADDRESS    1
  121 #define KERN_PROTECTION_FAILURE 2
  122 #define KERN_NO_SPACE           3
  123 #define KERN_INVALID_ARGUMENT   4
  124 #define KERN_FAILURE            5
  125 #define KERN_RESOURCE_SHORTAGE  6
  126 #define KERN_NOT_RECEIVER       7
  127 #define KERN_NO_ACCESS          8
  128 
  129 #ifndef ASSEMBLER
  130 #ifdef _KERNEL
  131 #define num_pages(x) \
  132         ((vm_offset_t)((((vm_offset_t)(x)) + PAGE_MASK) >> PAGE_SHIFT))
  133 extern  unsigned long maxtsiz;
  134 extern  unsigned long dfldsiz;
  135 extern  unsigned long maxdsiz;
  136 extern  unsigned long dflssiz;
  137 extern  unsigned long maxssiz;
  138 extern  unsigned long sgrowsiz;
  139 #endif                          /* _KERNEL */
  140 #endif                          /* ASSEMBLER */
  141 #endif                          /* _VM_PARAM_ */

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