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b64b660cd3
in machdep.c (it should use the global nmbclusters). Moved the calculation of nmbclusters into conf/param.c (same place where nmbclusters has always been assigned), and made the calculation include an extra amount based on "maxusers". NMBCLUSTERS can still be overrided in the kernel config file as always, but this change will make that generally unnecessary. This fixes the "bug" reports from people who have misconfigured kernels seeing the network hang when the mbuf cluster pool runs out. Reviewed by: John Dyson
134 lines
4.7 KiB
C
134 lines
4.7 KiB
C
/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 1994 John S. Dyson
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* 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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* William Jolitz.
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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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* from: @(#)vmparam.h 5.9 (Berkeley) 5/12/91
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* $Id: vmparam.h,v 1.17 1995/01/09 16:04:44 davidg Exp $
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*/
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#ifndef _MACHINE_VMPARAM_H_
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#define _MACHINE_VMPARAM_H_ 1
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/*
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* Machine dependent constants for 386.
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*/
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/*
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* Virtual memory related constants, all in bytes
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*/
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#define MAXTSIZ (16UL*1024*1024) /* max text size */
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#ifndef DFLDSIZ
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#define DFLDSIZ (64UL*1024*1024) /* initial data size limit */
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#endif
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#ifndef MAXDSIZ
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#define MAXDSIZ (128UL*1024*1024) /* max data size */
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#endif
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#ifndef DFLSSIZ
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#define DFLSSIZ (8UL*1024*1024) /* initial stack size limit */
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#endif
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#ifndef MAXSSIZ
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#define MAXSSIZ (64UL*1024*1024) /* max stack size */
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#endif
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#ifndef SGROWSIZ
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#define SGROWSIZ (128UL*1024) /* amount to grow stack */
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#endif
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#define USRTEXT (1*NBPG) /* base of user text XXX bogus */
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/*
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* Default sizes of swap allocation chunks (see dmap.h).
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* The actual values may be changed in vminit() based on MAXDSIZ.
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* With MAXDSIZ of 16Mb and NDMAP of 38, dmmax will be 1024.
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*/
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#define DMMIN 32 /* smallest swap allocation */
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#define DMMAX 4096 /* largest potential swap allocation */
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#define DMTEXT 1024 /* swap allocation for text */
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/*
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* Sizes of the system and user portions of the system page table.
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*/
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#define SYSPTSIZE (2*NPTEPG)
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#define USRPTSIZE (2*NPTEPG)
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/*
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* Size of the Shared Memory Pages page table.
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*/
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#ifndef SHMMAXPGS
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#define SHMMAXPGS 1024 /* XXX until we have more kmap space */
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#endif
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/*
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* Size of User Raw I/O map
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*/
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#define USRIOSIZE 1024
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/*
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* The time for a process to be blocked before being very swappable.
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* This is a number of seconds which the system takes as being a non-trivial
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* amount of real time. You probably shouldn't change this;
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* it is used in subtle ways (fractions and multiples of it are, that is, like
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* half of a ``long time'', almost a long time, etc.)
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* It is related to human patience and other factors which don't really
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* change over time.
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*/
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#define MAXSLP 20
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/*
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* Mach derived constants
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*/
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/* user/kernel map constants */
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#define KERNBASE ((0x400-1-NKPDE)*(NBPG*NPTEPG))
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#define VM_MIN_ADDRESS ((vm_offset_t)0)
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#define VM_MAXUSER_ADDRESS ((vm_offset_t)KERNBASE - (NBPG*(NPTEPG+UPAGES)))
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#define USRSTACK VM_MAXUSER_ADDRESS
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#define UPT_MIN_ADDRESS ((vm_offset_t)KERNBASE - (NBPG*NPTEPG))
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#define UPT_MAX_ADDRESS ((vm_offset_t)KERNBASE - (NBPG*(NKPDE+2)))
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#define VM_MAX_ADDRESS UPT_MAX_ADDRESS
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#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNBASE - (NBPG*(NKPDE+2)))
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#define UPDT VM_MIN_KERNEL_ADDRESS
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#define KPT_MIN_ADDRESS ((vm_offset_t)KERNBASE - NBPG*(NKPDE+1))
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#define KPT_MAX_ADDRESS ((vm_offset_t)KERNBASE - NBPG)
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#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t)KERNBASE + NKPDE*NBPG*NPTEPG)
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/* virtual sizes (bytes) for various kernel submaps */
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#define VM_KMEM_SIZE (32 * 1024 * 1024)
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#define VM_PHYS_SIZE (USRIOSIZE*CLBYTES)
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#endif /* _MACHINE_VMPARAM_H_ */
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