6c60c88452
words, every architecture is now auto-sizing the kmem arena. This revision
changes kmeminit() so that the definition of VM_KMEM_SIZE_SCALE becomes
mandatory and the definition of VM_KMEM_SIZE becomes optional.
Replace or eliminate all existing definitions of VM_KMEM_SIZE. With
auto-sizing enabled, VM_KMEM_SIZE effectively became an alternate spelling
for VM_KMEM_SIZE_MIN on most architectures. Use VM_KMEM_SIZE_MIN for
clarity.
Change kmeminit() so that the effect of defining VM_KMEM_SIZE is similar to
that of setting the tunable vm.kmem_size. Whereas the macros
VM_KMEM_SIZE_{MAX,MIN,SCALE} have had the same effect as the tunables
vm.kmem_size_{max,min,scale}, the effects of VM_KMEM_SIZE and vm.kmem_size
have been distinct. In particular, whereas VM_KMEM_SIZE was overridden by
VM_KMEM_SIZE_{MAX,MIN,SCALE} and vm.kmem_size_{max,min,scale}, vm.kmem_size
was not. Remedy this inconsistency. Now, VM_KMEM_SIZE can be used to set
the size of the kmem arena at compile-time without that value being
overridden by auto-sizing.
Update the nearby comments to reflect the kmem submap being replaced by the
kmem arena. Stop duplicating the auto-sizing formula in every machine-
dependent vmparam.h and place it in kmeminit() where auto-sizing takes
place.
Reviewed by: kib (an earlier version)
Sponsored by: EMC / Isilon Storage Division
191 lines
5.7 KiB
C
191 lines
5.7 KiB
C
/* $OpenBSD: vmparam.h,v 1.2 1998/09/15 10:50:12 pefo Exp $ */
|
|
/* $NetBSD: vmparam.h,v 1.5 1994/10/26 21:10:10 cgd Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1988 University of Utah.
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* the Systems Programming Group of the University of Utah Computer
|
|
* Science Department and Ralph Campbell.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* from: Utah Hdr: vmparam.h 1.16 91/01/18
|
|
* @(#)vmparam.h 8.2 (Berkeley) 4/22/94
|
|
* JNPR: vmparam.h,v 1.3.2.1 2007/09/10 06:01:28 girish
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_VMPARAM_H_
|
|
#define _MACHINE_VMPARAM_H_
|
|
|
|
/*
|
|
* Machine dependent constants mips processors.
|
|
*/
|
|
|
|
/*
|
|
* Virtual memory related constants, all in bytes
|
|
*/
|
|
#ifndef MAXTSIZ
|
|
#define MAXTSIZ (128UL*1024*1024) /* max text size */
|
|
#endif
|
|
#ifndef DFLDSIZ
|
|
#define DFLDSIZ (128UL*1024*1024) /* initial data size limit */
|
|
#endif
|
|
#ifndef MAXDSIZ
|
|
#define MAXDSIZ (1*1024UL*1024*1024) /* max data size */
|
|
#endif
|
|
#ifndef DFLSSIZ
|
|
#define DFLSSIZ (8UL*1024*1024) /* initial stack size limit */
|
|
#endif
|
|
#ifndef MAXSSIZ
|
|
#define MAXSSIZ (64UL*1024*1024) /* max stack size */
|
|
#endif
|
|
#ifndef SGROWSIZ
|
|
#define SGROWSIZ (128UL*1024) /* amount to grow stack */
|
|
#endif
|
|
|
|
/*
|
|
* Mach derived constants
|
|
*/
|
|
|
|
/* user/kernel map constants */
|
|
#define VM_MIN_ADDRESS ((vm_offset_t)0x00000000)
|
|
#define VM_MAX_ADDRESS ((vm_offset_t)(intptr_t)(int32_t)0xffffffff)
|
|
|
|
#define VM_MINUSER_ADDRESS ((vm_offset_t)0x00000000)
|
|
|
|
#ifdef __mips_n64
|
|
#define VM_MAXUSER_ADDRESS (VM_MINUSER_ADDRESS + (NPDEPG * NBSEG))
|
|
#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)0xc000000000000000)
|
|
#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + (NPDEPG * NBSEG))
|
|
#else
|
|
#define VM_MAXUSER_ADDRESS ((vm_offset_t)0x80000000)
|
|
#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)0xC0000000)
|
|
#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t)0xFFFFC000)
|
|
#endif
|
|
|
|
#define KERNBASE ((vm_offset_t)(intptr_t)(int32_t)0x80000000)
|
|
/*
|
|
* USRSTACK needs to start a little below 0x8000000 because the R8000
|
|
* and some QED CPUs perform some virtual address checks before the
|
|
* offset is calculated.
|
|
*/
|
|
#define USRSTACK (VM_MAXUSER_ADDRESS - PAGE_SIZE)
|
|
#ifdef __mips_n64
|
|
#define FREEBSD32_USRSTACK (((vm_offset_t)0x80000000) - PAGE_SIZE)
|
|
#endif
|
|
|
|
/*
|
|
* Disable superpage reservations. (not sure if this is right
|
|
* I copied it from ARM)
|
|
*/
|
|
#ifndef VM_NRESERVLEVEL
|
|
#define VM_NRESERVLEVEL 0
|
|
#endif
|
|
|
|
/*
|
|
* How many physical pages per kmem arena virtual page.
|
|
*/
|
|
#ifndef VM_KMEM_SIZE_SCALE
|
|
#define VM_KMEM_SIZE_SCALE (3)
|
|
#endif
|
|
|
|
/*
|
|
* Optional floor (in bytes) on the size of the kmem arena.
|
|
*/
|
|
#ifndef VM_KMEM_SIZE_MIN
|
|
#define VM_KMEM_SIZE_MIN (12 * 1024 * 1024)
|
|
#endif
|
|
|
|
/*
|
|
* Optional ceiling (in bytes) on the size of the kmem arena: 40% of the
|
|
* kernel map.
|
|
*/
|
|
#ifndef VM_KMEM_SIZE_MAX
|
|
#define VM_KMEM_SIZE_MAX ((VM_MAX_KERNEL_ADDRESS - \
|
|
VM_MIN_KERNEL_ADDRESS + 1) * 2 / 5)
|
|
#endif
|
|
|
|
/* initial pagein size of beginning of executable file */
|
|
#ifndef VM_INITIAL_PAGEIN
|
|
#define VM_INITIAL_PAGEIN 16
|
|
#endif
|
|
|
|
#define UMA_MD_SMALL_ALLOC
|
|
|
|
/*
|
|
* max number of non-contig chunks of physical RAM you can have
|
|
*/
|
|
#define VM_PHYSSEG_MAX 32
|
|
|
|
/*
|
|
* The physical address space is sparsely populated.
|
|
*/
|
|
#define VM_PHYSSEG_SPARSE
|
|
|
|
/*
|
|
* Create three free page pools: VM_FREEPOOL_DEFAULT is the default pool
|
|
* from which physical pages are allocated and VM_FREEPOOL_DIRECT is
|
|
* the pool from which physical pages for small UMA objects are
|
|
* allocated.
|
|
*/
|
|
#define VM_NFREEPOOL 3
|
|
#define VM_FREEPOOL_CACHE 2
|
|
#define VM_FREEPOOL_DEFAULT 0
|
|
#define VM_FREEPOOL_DIRECT 1
|
|
|
|
/*
|
|
* we support 2 free lists:
|
|
*
|
|
* - DEFAULT for direct mapped (KSEG0) pages.
|
|
* Note: This usage of DEFAULT may be misleading because we use
|
|
* DEFAULT for allocating direct mapped pages. The normal page
|
|
* allocations use HIGHMEM if available, and then DEFAULT.
|
|
* - HIGHMEM for other pages
|
|
*/
|
|
#ifdef __mips_n64
|
|
#define VM_NFREELIST 1
|
|
#define VM_FREELIST_DEFAULT 0
|
|
#define VM_FREELIST_DIRECT VM_FREELIST_DEFAULT
|
|
#else
|
|
#define VM_NFREELIST 2
|
|
#define VM_FREELIST_DEFAULT 1
|
|
#define VM_FREELIST_HIGHMEM 0
|
|
#define VM_FREELIST_DIRECT VM_FREELIST_DEFAULT
|
|
#define VM_HIGHMEM_ADDRESS ((vm_paddr_t)0x20000000)
|
|
#endif
|
|
|
|
/*
|
|
* The largest allocation size is 1MB.
|
|
*/
|
|
#define VM_NFREEORDER 9
|
|
|
|
#define ZERO_REGION_SIZE (64 * 1024) /* 64KB */
|
|
|
|
#endif /* !_MACHINE_VMPARAM_H_ */
|