849c9b2bfd
will be allocated for the respective usage types when there is contention for memory. replace "vnode" and "vtext" with "file" and "exec" in uvmexp field names and sysctl names.
173 lines
5.8 KiB
C
173 lines
5.8 KiB
C
/* $NetBSD: uvm_param.h,v 1.13 2001/12/09 03:07:19 chs Exp $ */
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/*
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* The Mach Operating System project at Carnegie-Mellon University.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)vm_param.h 8.2 (Berkeley) 1/9/95
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*
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*
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* Copyright (c) 1987, 1990 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Authors: Avadis Tevanian, Jr., Michael Wayne Young
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/*
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* Machine independent virtual memory parameters.
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*/
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#ifndef _VM_PARAM_
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#define _VM_PARAM_
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#ifdef _KERNEL
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#include <machine/vmparam.h>
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#endif
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/*
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* This belongs in types.h, but breaks too many existing programs.
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*/
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typedef int boolean_t;
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifndef FALSE
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#define FALSE 0
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#endif
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/*
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* The machine independent pages are refered to as PAGES. A page
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* is some number of hardware pages, depending on the target machine.
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*/
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#define DEFAULT_PAGE_SIZE 4096
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#if defined(_KERNEL) && !defined(PAGE_SIZE)
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/*
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* All references to the size of a page should be done with PAGE_SIZE
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* or PAGE_SHIFT. The fact they are variables is hidden here so that
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* we can easily make them constant if we so desire.
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*/
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#define PAGE_SIZE uvmexp.pagesize /* size of page */
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#define PAGE_MASK uvmexp.pagemask /* size of page - 1 */
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#define PAGE_SHIFT uvmexp.pageshift /* bits to shift for pages */
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#endif /* _KERNEL */
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/*
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* CTL_VM identifiers
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*/
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#define VM_METER 1 /* struct vmmeter */
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#define VM_LOADAVG 2 /* struct loadavg */
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#define VM_UVMEXP 3 /* struct uvmexp */
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#define VM_NKMEMPAGES 4 /* kmem_map pages */
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#define VM_UVMEXP2 5 /* struct uvmexp_sysctl */
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#define VM_ANONMIN 6
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#define VM_EXECMIN 7
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#define VM_FILEMIN 8
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#define VM_MAXSLP 9
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#define VM_USPACE 10
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#define VM_ANONMAX 11
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#define VM_EXECMAX 12
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#define VM_FILEMAX 13
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#define VM_MAXID 14 /* number of valid vm ids */
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#define CTL_VM_NAMES { \
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{ 0, 0 }, \
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{ "vmmeter", CTLTYPE_STRUCT }, \
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{ "loadavg", CTLTYPE_STRUCT }, \
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{ "uvmexp", CTLTYPE_STRUCT }, \
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{ "nkmempages", CTLTYPE_INT }, \
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{ "uvmexp2", CTLTYPE_STRUCT }, \
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{ "anonmin", CTLTYPE_INT }, \
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{ "execmin", CTLTYPE_INT }, \
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{ "filemin", CTLTYPE_INT }, \
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{ "maxslp", CTLTYPE_INT }, \
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{ "uspace", CTLTYPE_INT }, \
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{ "anonmax", CTLTYPE_INT }, \
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{ "execmax", CTLTYPE_INT }, \
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{ "filemax", CTLTYPE_INT }, \
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}
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#ifndef ASSEMBLER
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/*
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* Convert addresses to pages and vice versa.
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* No rounding is used.
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*/
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#ifdef _KERNEL
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#define atop(x) (((paddr_t)(x)) >> PAGE_SHIFT)
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#define ptoa(x) ((vaddr_t)((vaddr_t)(x) << PAGE_SHIFT))
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/*
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* Round off or truncate to the nearest page. These will work
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* for either addresses or counts (i.e., 1 byte rounds to 1 page).
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*/
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#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK)
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#define trunc_page(x) ((x) & ~PAGE_MASK)
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extern psize_t mem_size; /* size of physical memory (bytes) */
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extern int ubc_nwins; /* number of UBC mapping windows */
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extern int ubc_winshift; /* shift for a UBC mapping window */
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#else
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/* out-of-kernel versions of round_page and trunc_page */
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#define round_page(x) \
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((((vaddr_t)(x) + (vm_page_size - 1)) / vm_page_size) * \
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vm_page_size)
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#define trunc_page(x) \
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((((vaddr_t)(x)) / vm_page_size) * vm_page_size)
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#endif /* _KERNEL */
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#endif /* ASSEMBLER */
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#endif /* _VM_PARAM_ */
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