b89a3425b7
Eliminate obsolete global kernel variable "struct timezone tz" Add RTC_OFFSET option Add global kernel variable rtc_offset, which is initialized by RTC_OFFSET at kernel compile time. on i386, x68k, mac68k, pc532 and arm32, RTC_OFFSET indicates how many minutes west (east) of GMT the hardware RTC runs. Defaults to 0. Places where tz variable was used to indicate this in the past have been replaced with rtc_offset. Add sysctl interface to rtc_offset. Kill obsolete DST_* macros in sys/time.h gettimeofday now always returns zeroed timezone if zone is requested. settimeofday now ignores and logs attempts to set non-existant kernel timezone.
194 lines
5.7 KiB
C
194 lines
5.7 KiB
C
/* $NetBSD: param.c,v 1.19 1997/01/15 01:37:50 perry Exp $ */
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/*
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* Copyright (c) 1980, 1986, 1989 Regents of the University of California.
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* All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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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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* @(#)param.c 7.20 (Berkeley) 6/27/91
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/socket.h>
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#include <sys/proc.h>
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#include <sys/vnode.h>
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#include <sys/file.h>
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#include <sys/callout.h>
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#ifdef REAL_CLISTS
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#include <sys/clist.h>
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#endif
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#include <sys/mbuf.h>
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#include <ufs/ufs/quota.h>
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#include <sys/kernel.h>
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#include <sys/utsname.h>
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#ifdef SYSVSHM
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#include <machine/vmparam.h>
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#include <sys/shm.h>
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#endif
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#ifdef SYSVSEM
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#include <sys/sem.h>
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#endif
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#ifdef SYSVMSG
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#include <sys/msg.h>
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#endif
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/*
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* System parameter formulae.
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*
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* This file is copied into each directory where we compile
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* the kernel; it should be modified there to suit local taste
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* if necessary.
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*
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* Compiled with -DHZ=xx -DRTC_OFFSET=x -DMAXUSERS=xx
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*/
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#ifdef TIMEZONE
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#error TIMEZONE is an obsolete kernel option.
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#endif
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#ifdef DST
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#error DST is an obsolete kernel option.
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#endif
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#ifndef RTC_OFFSET
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#define RTC_OFFSET 0
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#endif
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#ifndef HZ
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#define HZ 100
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#endif
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int hz = HZ;
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int tick = 1000000 / HZ;
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int tickadj = 240000 / (60 * HZ); /* can adjust 240ms in 60s */
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int rtc_offset = RTC_OFFSET;
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#define NPROC (20 + 16 * MAXUSERS)
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int maxproc = NPROC;
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#define NTEXT (80 + NPROC / 8) /* actually the object cache */
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#define NVNODE (NPROC + NTEXT + 100)
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int desiredvnodes = NVNODE;
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int maxfiles = 3 * (NPROC + MAXUSERS) + 80;
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int ncallout = 16 + NPROC;
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#ifdef REAL_CLISTS
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int nclist = 60 + 12 * MAXUSERS;
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#endif
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int nmbclusters = NMBCLUSTERS;
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int fscale = FSCALE; /* kernel uses `FSCALE', user uses `fscale' */
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/*
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* Values in support of System V compatible shared memory. XXX
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*/
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#ifdef SYSVSHM
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#define SHMMAX SHMMAXPGS /* shminit() performs a `*= NBPG' */
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#define SHMMIN 1
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#define SHMMNI 32 /* <= SHMMMNI in shm.h */
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#define SHMSEG 8
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#define SHMALL (SHMMAXPGS/CLSIZE)
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struct shminfo shminfo = {
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SHMMAX,
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SHMMIN,
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SHMMNI,
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SHMSEG,
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SHMALL
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};
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#endif
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/*
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* Values in support of System V compatible semaphores.
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*/
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#ifdef SYSVSEM
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struct seminfo seminfo = {
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SEMMAP, /* # of entries in semaphore map */
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SEMMNI, /* # of semaphore identifiers */
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SEMMNS, /* # of semaphores in system */
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SEMMNU, /* # of undo structures in system */
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SEMMSL, /* max # of semaphores per id */
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SEMOPM, /* max # of operations per semop call */
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SEMUME, /* max # of undo entries per process */
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SEMUSZ, /* size in bytes of undo structure */
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SEMVMX, /* semaphore maximum value */
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SEMAEM /* adjust on exit max value */
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};
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#endif
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/*
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* Values in support of System V compatible messages.
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*/
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#ifdef SYSVMSG
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struct msginfo msginfo = {
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MSGMAX, /* max chars in a message */
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MSGMNI, /* # of message queue identifiers */
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MSGMNB, /* max chars in a queue */
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MSGTQL, /* max messages in system */
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MSGSSZ, /* size of a message segment */
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/* (must be small power of 2 greater than 4) */
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MSGSEG /* number of message segments */
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};
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#endif
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/*
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* These are initialized at bootstrap time
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* to values dependent on memory size
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*/
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int nbuf, nswbuf;
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/*
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* These have to be allocated somewhere; allocating
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* them here forces loader errors if this file is omitted
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* (if they've been externed everywhere else; hah!).
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*/
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struct callout *callout;
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struct cblock *cfree;
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struct buf *buf, *swbuf;
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char *buffers;
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struct utsname utsname;
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/*
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* These control when and to what priority a process gets after a certain
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* amount of CPU time expires. AUTONICETIME is in seconds.
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* AUTONICEVAL is NOT offset by NZERO, i.e. it's between PRIO_MIN and PRIO_MAX.
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*/
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#ifdef AUTONICETIME
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int autonicetime = AUTONICETIME;
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#else
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int autonicetime = (60 * 10); /* 10 minutes */
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#endif
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#ifdef AUTONICEVAL
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int autoniceval = AUTONICEVAL;
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#else
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int autoniceval = 4; /* default + 4 */
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#endif
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