1adeb7ffb1
Remove evil allocation macros from machdep.c (why was that there???) and use malloc() instead. Move paramters out of param.h and into the code itself. Move a bunch of internal definitions from public sys/*.h headers (without #ifdef _KERNEL even) into the code itself. I had hoped to make some of this more dynamic, but the cost of doing wakeups on all sleeping processes on old arrays was too frightening. The other possibility is to initialize on the first use, and allow dynamic sysctl changes to parameters right until that point. That would allow /etc/rc.sysctl to change SEM* and MSG* defaults as we presently do with SHM*, but without the nightmare of changing a running system.
99 lines
3.6 KiB
C
99 lines
3.6 KiB
C
/*
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* Copyright (c) 1980, 1986, 1989, 1993
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* The Regents of the University of California. 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 8.3 (Berkeley) 8/20/94
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* $FreeBSD$
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*/
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#include <stddef.h>
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#include "opt_param.h"
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#include <sys/param.h>
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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 -DMAXUSERS=xx
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*/
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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 = howmany(30000, 60 * HZ); /* can adjust 30ms in 60s */
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#define NPROC (20 + 16 * MAXUSERS)
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#ifndef MAXFILES
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#define MAXFILES (NPROC*2)
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#endif
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int maxproc = NPROC; /* maximum # of processes */
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int maxprocperuid = NPROC-1; /* maximum # of processes per user */
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int maxfiles = MAXFILES; /* system wide open files limit */
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int maxfilesperproc = MAXFILES; /* per-process open files limit */
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int ncallout = 16 + NPROC + MAXFILES; /* maximum # of timer events */
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int mbuf_wait = 32; /* mbuf sleep time in ticks */
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/* maximum # of sf_bufs (sendfile(2) zero-copy virtual buffers) */
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#ifndef NSFBUFS
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#define NSFBUFS (512 + MAXUSERS * 16)
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#endif
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int nsfbufs = NSFBUFS;
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/*
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* These may be set to nonzero here or by patching.
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* If they are nonzero at bootstrap time then they are
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* initialized to values dependent on the memory size.
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*/
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#ifdef NBUF
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int nbuf = NBUF;
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#else
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int nbuf = 0;
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#endif
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int nswbuf = 0;
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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 buf *swbuf;
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