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/*
* Copyright (c) 1980, 1986, 1989, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 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.
*
* @(#)param.c 8.2 (Berkeley) 1/21/94
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/callout.h>
#include <sys/clist.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <ufs/ufs/quota.h>
#ifdef SYSVSHM
#include <machine/vmparam.h>
#include <sys/shm.h>
#endif
/*
* System parameter formulae.
*
* This file is copied into each directory where we compile
* the kernel; it should be modified there to suit local taste
* if necessary.
*
* Compiled with -DHZ=xx -DTIMEZONE=x -DDST=x -DMAXUSERS=xx
*/
#ifndef HZ
#define HZ 100
#endif
int hz = HZ;
int tick = 1000000 / HZ;
int tickadj = 30000 / (60 * HZ); /* can adjust 30ms in 60s */
struct timezone tz = { TIMEZONE, DST };
#define NPROC (20 + 16 * MAXUSERS)
int maxproc = NPROC;
#define NTEXT NPROC
int vm_cache_max = NTEXT/2 + 16;
#define NVNODE (NPROC + NTEXT + 100)
int desiredvnodes = NVNODE;
int maxfiles = 3 * (NPROC + MAXUSERS) + 80;
int ncallout = 16 + NPROC;
int nclist = 60 + 12 * MAXUSERS;
int nmbclusters = NMBCLUSTERS;
int fscale = FSCALE; /* kernel uses `FSCALE', user uses `fscale' */
/*
* Values in support of System V compatible shared memory. XXX
*/
#ifdef SYSVSHM
#define SHMMAX (SHMMAXPGS*NBPG)
#define SHMMIN 1
#define SHMMNI 32 /* <= SHMMMNI in shm.h */
#define SHMSEG 8
#define SHMALL (SHMMAXPGS/CLSIZE)
struct shminfo shminfo = {
SHMMAX,
SHMMIN,
SHMMNI,
SHMSEG,
SHMALL
};
#endif
/*
* These are initialized at bootstrap time
* to values dependent on memory size
*/
int nbuf, nswbuf;
/*
* These have to be allocated somewhere; allocating
* them here forces loader errors if this file is omitted
* (if they've been externed everywhere else; hah!).
*/
struct callout *callout;
struct cblock *cfree;
struct buf *buf, *swbuf;
char *buffers;
/*
* Proc/pgrp hashing.
* Here so that hash table sizes can depend on MAXUSERS/NPROC.
* Hash size must be a power of two.
* NOW omission of this file will cause loader errors!
*/
#if NPROC > 1024
#define PIDHSZ 512
#else
#if NPROC > 512
#define PIDHSZ 256
#else
#if NPROC > 256
#define PIDHSZ 128
#else
#define PIDHSZ 64
#endif
#endif
#endif
struct proc *pidhash[PIDHSZ];
struct pgrp *pgrphash[PIDHSZ];
int pidhashmask = PIDHSZ - 1;
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