/* * 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 8.3 (Berkeley) 8/20/94 * $Id: param.c,v 1.15 1996/03/02 18:23:57 peter Exp $ */ #include "opt_sysvipc.h" #include "opt_param.h" #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 #ifdef SYSVSEM #include <sys/sem.h> #endif #ifdef SYSVMSG #include <sys/msg.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 -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 */ #define NPROC (20 + 16 * MAXUSERS) int maxproc = NPROC; /* maximum # of processes */ int maxprocperuid = NPROC-1; /* maximum # of processes per user */ int maxfiles = NPROC*2; /* system wide open files limit */ int maxfilesperproc = NPROC*2; /* per-process open files limit */ int ncallout = 16 + NPROC; /* maximum # of timer events */ /* maximum # of mbuf clusters */ #ifndef NMBCLUSTERS int nmbclusters = 512 + MAXUSERS * 16; #else int nmbclusters = NMBCLUSTERS; #endif int fscale = FSCALE; /* kernel uses `FSCALE', user uses `fscale' */ /* * Values in support of System V compatible shared memory. XXX */ #ifdef SYSVSHM #ifndef SHMMAX #define SHMMAX (SHMMAXPGS*NBPG) #endif #ifndef SHMMIN #define SHMMIN 1 #endif #ifndef SHMMNI #define SHMMNI 32 /* <= SHMMMNI in shm.h */ #endif #ifndef SHMSEG #define SHMSEG 8 #endif #ifndef SHMALL #define SHMALL (SHMMAXPGS/CLSIZE) #endif struct shminfo shminfo = { SHMMAX, SHMMIN, SHMMNI, SHMSEG, SHMALL }; #endif /* * Values in support of System V compatible semaphores. */ #ifdef SYSVSEM struct seminfo seminfo = { SEMMAP, /* # of entries in semaphore map */ SEMMNI, /* # of semaphore identifiers */ SEMMNS, /* # of semaphores in system */ SEMMNU, /* # of undo structures in system */ SEMMSL, /* max # of semaphores per id */ SEMOPM, /* max # of operations per semop call */ SEMUME, /* max # of undo entries per process */ SEMUSZ, /* size in bytes of undo structure */ SEMVMX, /* semaphore maximum value */ SEMAEM /* adjust on exit max value */ }; #endif /* * Values in support of System V compatible messages. */ #ifdef SYSVMSG struct msginfo msginfo = { MSGMAX, /* max chars in a message */ MSGMNI, /* # of message queue identifiers */ MSGMNB, /* max chars in a queue */ MSGTQL, /* max messages in system */ MSGSSZ, /* size of a message segment */ /* (must be small power of 2 greater than 4) */ MSGSEG /* number of message segments */ }; #endif /* * These may be set to nonzero here or by patching. * If they are nonzero at bootstrap time then they are * initialized to values dependent on the memory size. */ #ifdef NBUF int nbuf = NBUF; #else int nbuf = 0; #endif int nswbuf = 0; /* * 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 buf *swbuf;