/* $NetBSD: param.c,v 1.68.4.1 2020/11/14 15:36:11 martin Exp $ */ /* * Copyright (c) 1980, 1986, 1989 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. 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 7.20 (Berkeley) 6/27/91 */ #include __KERNEL_RCSID(0, "$NetBSD: param.c,v 1.68.4.1 2020/11/14 15:36:11 martin Exp $"); #ifdef _KERNEL_OPT #include "opt_hz.h" #include "opt_rtc_offset.h" #include "opt_sysv.h" #include "opt_sysvparam.h" #include "opt_multiprocessor.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef SYSVSHM #include #include #endif #ifdef SYSVSEM #include #endif #ifdef SYSVMSG #include #endif /* * PCC cannot handle the 80KB string literal. */ #if !defined(__PCC__) #define CONFIG_FILE #include "config_file.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 -DRTC_OFFSET=x -DMAXUSERS=xx */ #ifdef TIMEZONE #error TIMEZONE is an obsolete kernel option. #endif #ifdef DST #error DST is an obsolete kernel option. #endif #ifndef RTC_OFFSET #define RTC_OFFSET 0 #endif #ifndef HZ #define HZ 100 #endif #ifndef MAXEXEC #define MAXEXEC 16 #endif int hz = HZ; int tick = 1000000 / HZ; /* can adjust 240ms in 60s */ int tickadj = (240000 / (60 * HZ)) ? (240000 / (60 * HZ)) : 1; int rtc_offset = RTC_OFFSET; int maxproc = NPROC; int maxlwp = MAXLWP; int desiredvnodes = NVNODE; u_int maxfiles = MAXFILES; int fscale = FSCALE; /* kernel uses `FSCALE', user uses `fscale' */ int maxexec = MAXEXEC; /* max number of concurrent exec() calls */ #ifdef MULTIPROCESSOR u_int maxcpus = MAXCPUS; size_t coherency_unit = COHERENCY_UNIT; #else u_int maxcpus = 1; size_t coherency_unit = ALIGNBYTES + 1; #endif /* * Various mbuf-related parameters. These can also be changed at run-time * with sysctl. */ int nmbclusters = 0; #ifndef MBLOWAT #define MBLOWAT 16 #endif int mblowat = MBLOWAT; #ifndef MCLLOWAT #define MCLLOWAT 8 #endif int mcllowat = MCLLOWAT; /* * Actual network mbuf sizes (read-only), for netstat. */ const int msize = MSIZE; const int mclbytes = MCLBYTES;