84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
475 lines
15 KiB
C
475 lines
15 KiB
C
/* $NetBSD: param.h,v 1.437 2013/11/25 03:03:41 christos Exp $ */
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/*-
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* Copyright (c) 1982, 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. 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.h 8.3 (Berkeley) 4/4/95
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*/
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#ifndef _SYS_PARAM_H_
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#define _SYS_PARAM_H_
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/*
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* Historic BSD #defines -- probably will remain untouched for all time.
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*/
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#define BSD 199506 /* System version (year & month). */
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#define BSD4_3 1
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#define BSD4_4 1
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/*
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* #define __NetBSD_Version__ MMmmrrpp00
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*
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* M = major version
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* m = minor version; a minor number of 99 indicates current.
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* r = 0 (*)
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* p = patchlevel
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*
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* When new releases are made, src/gnu/usr.bin/groff/tmac/mdoc.local
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* needs to be updated and the changes sent back to the groff maintainers.
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*
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* (*) Up to 2.0I "release" used to be "",A-Z,Z[A-Z] but numeric
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* e.g. NetBSD-1.2D = 102040000 ('D' == 4)
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* NetBSD-2.0H (200080000) was changed on 20041001 to:
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* 2.99.9 (299000900)
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*/
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#define __NetBSD_Version__ 699002800 /* NetBSD 6.99.28 */
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#define __NetBSD_Prereq__(M,m,p) (((((M) * 100000000) + \
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(m) * 1000000) + (p) * 100) <= __NetBSD_Version__)
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/*
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* Historical NetBSD #define
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*
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* NetBSD 1.4 was the last release for which this value was incremented.
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* The value is now permanently fixed at 199905. It will never be
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* changed again.
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*
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* New code must use __NetBSD_Version__ instead, and should not even
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* count on NetBSD being defined.
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*
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*/
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#define NetBSD 199905 /* NetBSD version (year & month). */
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/*
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* There macros determine if we are running in protected mode or not.
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* _HARDKERNEL: code uses kernel namespace and runs in hw priviledged mode
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* _SOFTKERNEL: code uses kernel namespace but runs without hw priviledges
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*/
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#if defined(_KERNEL) && !defined(_RUMPKERNEL)
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#define _HARDKERNEL
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#endif
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#if defined(_KERNEL) && defined(_RUMPKERNEL)
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#define _SOFTKERNEL
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#endif
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#include <sys/null.h>
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#ifndef __ASSEMBLER__
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#include <sys/inttypes.h>
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#include <sys/types.h>
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/*
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* Machine-independent constants (some used in following include files).
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* Redefined constants are from POSIX 1003.1 limits file.
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*
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* MAXCOMLEN should be >= sizeof(ac_comm) (see <acct.h>)
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* MAXHOSTNAMELEN should be >= (_POSIX_HOST_NAME_MAX + 1) (see <limits.h>)
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* MAXLOGNAME should be >= UT_NAMESIZE (see <utmp.h>)
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*/
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#include <sys/syslimits.h>
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#define MAXCOMLEN 16 /* max command name remembered */
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#define MAXINTERP PATH_MAX /* max interpreter file name length */
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/* DEPRECATED: use LOGIN_NAME_MAX instead. */
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#define MAXLOGNAME (LOGIN_NAME_MAX - 1) /* max login name length */
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#define NCARGS ARG_MAX /* max bytes for an exec function */
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#define NGROUPS NGROUPS_MAX /* max number groups */
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#define NOGROUP 65535 /* marker for empty group set member */
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#define MAXHOSTNAMELEN 256 /* max hostname size */
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#ifndef NOFILE
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#define NOFILE OPEN_MAX /* max open files per process */
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#endif
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#ifndef MAXUPRC /* max simultaneous processes */
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#define MAXUPRC CHILD_MAX /* POSIX 1003.1-compliant default */
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#else
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#if (MAXUPRC - 0) < CHILD_MAX
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#error MAXUPRC less than CHILD_MAX. See options(4) for details.
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#endif /* (MAXUPRC - 0) < CHILD_MAX */
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#endif /* !defined(MAXUPRC) */
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/* More types and definitions used throughout the kernel. */
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#ifdef _KERNEL
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#include <sys/cdefs.h>
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#include <sys/errno.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <sys/ucred.h>
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#include <sys/uio.h>
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#include <uvm/uvm_param.h>
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#ifndef NPROC
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#define NPROC (20 + 16 * MAXUSERS)
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#endif
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#ifndef NTEXT
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#define NTEXT (80 + NPROC / 8) /* actually the object cache */
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#endif
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#ifndef NVNODE
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#define NVNODE (NPROC + NTEXT + 100)
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#define NVNODE_IMPLICIT
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#endif
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#ifndef VNODE_KMEM_MAXPCT
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#define VNODE_KMEM_MAXPCT 60
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#endif
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#ifndef BUFCACHE_VA_MAXPCT
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#define BUFCACHE_VA_MAXPCT 20
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#endif
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#define VNODE_COST 2048 /* assumed space in bytes */
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#endif /* _KERNEL */
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/* Signals. */
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#include <sys/signal.h>
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/* Machine type dependent parameters. */
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#include <machine/param.h>
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#include <machine/limits.h>
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/* pages ("clicks") to disk blocks */
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#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
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#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
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/* bytes to pages */
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#define ctob(x) ((x) << PGSHIFT)
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#define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
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/* bytes to disk blocks */
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#define dbtob(x) ((x) << DEV_BSHIFT)
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#define btodb(x) ((x) >> DEV_BSHIFT)
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#ifndef COHERENCY_UNIT
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#define COHERENCY_UNIT 64
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#endif
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#ifndef CACHE_LINE_SIZE
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#define CACHE_LINE_SIZE 64
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#endif
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#ifndef MAXCPUS
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#define MAXCPUS 32
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#endif
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#ifndef MAX_LWP_PER_PROC
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#define MAX_LWP_PER_PROC 8000
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#endif
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/*
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* Stack macros. On most architectures, the stack grows down,
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* towards lower addresses; it is the rare architecture where
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* it grows up, towards higher addresses.
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*
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* STACK_GROW and STACK_SHRINK adjust a stack pointer by some
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* size, no questions asked. STACK_ALIGN aligns a stack pointer.
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*
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* STACK_ALLOC returns a pointer to allocated stack space of
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* some size; given such a pointer and a size, STACK_MAX gives
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* the maximum (in the "maxsaddr" sense) stack address of the
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* allocated memory.
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*/
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#if defined(_KERNEL) || defined(__EXPOSE_STACK)
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#ifndef STACK_ALIGNBYTES
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#define STACK_ALIGNBYTES __ALIGNBYTES
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#endif
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#ifdef __MACHINE_STACK_GROWS_UP
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#define STACK_GROW(sp, _size) (((char *)(void *)(sp)) + (_size))
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#define STACK_SHRINK(sp, _size) (((char *)(void *)(sp)) - (_size))
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#define STACK_ALIGN(sp, bytes) \
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((char *)((((unsigned long)(sp)) + (bytes)) & ~(bytes)))
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#define STACK_ALLOC(sp, _size) ((char *)(void *)(sp))
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#define STACK_MAX(p, _size) (((char *)(void *)(p)) + (_size))
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#else
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#define STACK_GROW(sp, _size) (((char *)(void *)(sp)) - (_size))
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#define STACK_SHRINK(sp, _size) (((char *)(void *)(sp)) + (_size))
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#define STACK_ALIGN(sp, bytes) \
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((char *)(((unsigned long)(sp)) & ~(bytes)))
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#define STACK_ALLOC(sp, _size) (((char *)(void *)(sp)) - (_size))
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#define STACK_MAX(p, _size) ((char *)(void *)(p))
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#endif
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#define STACK_LEN_ALIGN(len, bytes) (((len) + (bytes)) & ~(bytes))
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#endif /* defined(_KERNEL) || defined(__EXPOSE_STACK) */
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/*
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* Round p (pointer or byte index) up to a correctly-aligned value for all
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* data types (int, long, ...). The result is u_int and must be cast to
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* any desired pointer type.
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*
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* ALIGNED_POINTER is a boolean macro that checks whether an address
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* is valid to fetch data elements of type t from on this architecture.
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* This does not reflect the optimal alignment, just the possibility
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* (within reasonable limits).
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*
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*/
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#define ALIGNBYTES __ALIGNBYTES
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#ifndef ALIGN
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#define ALIGN(p) (((uintptr_t)(p) + ALIGNBYTES) & ~ALIGNBYTES)
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#endif
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#ifndef ALIGNED_POINTER
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#define ALIGNED_POINTER(p,t) ((((uintptr_t)(p)) & (sizeof(t) - 1)) == 0)
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#endif
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/*
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* Historic priority levels. These are meaningless and remain only
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* for source compatibility. Do not use in new code.
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*/
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#define PSWP 0
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#define PVM 4
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#define PINOD 8
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#define PRIBIO 16
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#define PVFS 20
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#define PZERO 22
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#define PSOCK 24
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#define PWAIT 32
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#define PLOCK 36
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#define PPAUSE 40
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#define PUSER 50
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#define MAXPRI 127
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#define PCATCH 0x100 /* OR'd with pri for tsleep to check signals */
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#define PNORELOCK 0x200 /* OR'd with pri for tsleep to not relock */
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/*
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* New priority levels.
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*/
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#define PRI_COUNT 224
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#define PRI_NONE (-1)
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#define PRI_KERNEL_RT 192
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#define NPRI_KERNEL_RT 32
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#define MAXPRI_KERNEL_RT (PRI_KERNEL_RT + NPRI_KERNEL_RT - 1)
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#define PRI_USER_RT 128
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#define NPRI_USER_RT 64
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#define MAXPRI_USER_RT (PRI_USER_RT + NPRI_USER_RT - 1)
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#define PRI_KTHREAD 96
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#define NPRI_KTHREAD 32
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#define MAXPRI_KTHREAD (PRI_KTHREAD + NPRI_KTHREAD - 1)
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#define PRI_KERNEL 64
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#define NPRI_KERNEL 32
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#define MAXPRI_KERNEL (PRI_KERNEL + NPRI_KERNEL - 1)
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#define PRI_USER 0
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#define NPRI_USER 64
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#define MAXPRI_USER (PRI_USER + NPRI_USER - 1)
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/* Priority range used by POSIX real-time features */
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#define SCHED_PRI_MIN 0
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#define SCHED_PRI_MAX 63
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/*
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* Kernel thread priorities.
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*/
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#define PRI_SOFTSERIAL MAXPRI_KERNEL_RT
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#define PRI_SOFTNET (MAXPRI_KERNEL_RT - schedppq * 1)
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#define PRI_SOFTBIO (MAXPRI_KERNEL_RT - schedppq * 2)
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#define PRI_SOFTCLOCK (MAXPRI_KERNEL_RT - schedppq * 3)
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#define PRI_XCALL MAXPRI_KTHREAD
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#define PRI_PGDAEMON (MAXPRI_KTHREAD - schedppq * 1)
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#define PRI_VM (MAXPRI_KTHREAD - schedppq * 2)
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#define PRI_IOFLUSH (MAXPRI_KTHREAD - schedppq * 3)
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#define PRI_BIO (MAXPRI_KTHREAD - schedppq * 4)
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#define PRI_IDLE PRI_USER
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/*
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* Miscellaneous.
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*/
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#define NBPW sizeof(int) /* number of bytes per word (integer) */
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#define CMASK 022 /* default file mask: S_IWGRP|S_IWOTH */
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#define NODEV (dev_t)(-1) /* non-existent device */
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/*
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* File system parameters and macros.
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*
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* The file system is made out of blocks of at most MAXBSIZE units, with
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* smaller units (fragments) only in the last direct block. MAXBSIZE
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* primarily determines the size of buffers in the buffer pool. It may be
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* made larger without any effect on existing file systems; however making
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* it smaller may make some file systems unmountable.
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*/
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#ifndef MAXBSIZE /* XXX */
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#define MAXBSIZE MAXPHYS
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#endif
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#define MAXFRAG 8
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/*
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* MAXPATHLEN defines the longest permissible path length after expanding
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* symbolic links. It is used to allocate a temporary buffer from the buffer
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* pool in which to do the name expansion, hence should be a power of two,
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* and must be less than or equal to MAXBSIZE. MAXSYMLINKS defines the
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* maximum number of symbolic links that may be expanded in a path name.
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* It should be set high enough to allow all legitimate uses, but halt
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* infinite loops reasonably quickly.
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*
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* MAXSYMLINKS should be >= _POSIX_SYMLOOP_MAX (see <limits.h>)
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*/
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#define MAXPATHLEN PATH_MAX
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#define MAXSYMLINKS 32
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/*
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* This is the maximum individual filename component length enforced by
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* namei. Filesystems cannot exceed this limit. The upper bound for that
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* limit is NAME_MAX. We don't bump it for now, for compatibility with
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* old binaries during the time where MAXPATHLEN was 511 and NAME_MAX was
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* 255
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*/
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#define KERNEL_NAME_MAX 255
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/* Bit map related macros. */
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#define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
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#define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
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#define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
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#define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
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/* Macros for counting and rounding. */
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#ifndef howmany
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#define howmany(x, y) (((x)+((y)-1))/(y))
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#endif
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#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
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#define rounddown(x,y) (((x)/(y))*(y))
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#define roundup2(x, m) (((x) + (m) - 1) & ~((m) - 1))
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#define powerof2(x) ((((x)-1)&(x))==0)
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/* Macros for min/max. */
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#define MIN(a,b) ((/*CONSTCOND*/(a)<(b))?(a):(b))
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#define MAX(a,b) ((/*CONSTCOND*/(a)>(b))?(a):(b))
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/*
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* Constants for setting the parameters of the kernel memory allocator.
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*
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* 2 ** MINBUCKET is the smallest unit of memory that will be
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* allocated. It must be at least large enough to hold a pointer.
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*
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* Units of memory less or equal to MAXALLOCSAVE will permanently
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* allocate physical memory; requests for these size pieces of
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* memory are quite fast. Allocations greater than MAXALLOCSAVE must
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* always allocate and free physical memory; requests for these
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* size allocations should be done infrequently as they will be slow.
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*
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* Constraints: NBPG <= MAXALLOCSAVE <= 2 ** (MINBUCKET + 14), and
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* MAXALLOCSAVE must be a power of two.
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*/
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#ifdef _LP64
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#define MINBUCKET 5 /* 5 => min allocation of 32 bytes */
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#else
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#define MINBUCKET 4 /* 4 => min allocation of 16 bytes */
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#endif
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#define MAXALLOCSAVE (2 * NBPG)
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/*
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* Scale factor for scaled integers used to count %cpu time and load avgs.
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*
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* The number of CPU `tick's that map to a unique `%age' can be expressed
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* by the formula (1 / (2 ^ (FSHIFT - 11))). The maximum load average that
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* can be calculated (assuming 32 bits) can be closely approximated using
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* the formula (2 ^ (2 * (16 - FSHIFT))) for (FSHIFT < 15).
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*
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* For the scheduler to maintain a 1:1 mapping of CPU `tick' to `%age',
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* FSHIFT must be at least 11; this gives us a maximum load avg of ~1024.
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*/
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#define FSHIFT 11 /* bits to right of fixed binary point */
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#define FSCALE (1<<FSHIFT)
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/*
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* The time for a process to be blocked before being very swappable.
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* This is a number of seconds which the system takes as being a non-trivial
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* amount of real time. You probably shouldn't change this;
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* it is used in subtle ways (fractions and multiples of it are, that is, like
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* half of a ``long time'', almost a long time, etc.)
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* It is related to human patience and other factors which don't really
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* change over time.
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*/
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#define MAXSLP 20
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/*
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* Defaults for Unified Buffer Cache parameters.
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* These may be overridden in <machine/param.h>.
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*/
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#ifndef UBC_WINSHIFT
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#define UBC_WINSHIFT 13
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#endif
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#ifndef UBC_NWINS
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#define UBC_NWINS 1024
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#endif
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#ifdef _KERNEL
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/*
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* macro to convert from milliseconds to hz without integer overflow
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* Default version using only 32bits arithmetics.
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* 64bit port can define 64bit version in their <machine/param.h>
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* 0x20000 is safe for hz < 20000
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*/
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#ifndef mstohz
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#define mstohz(ms) \
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(__predict_false((ms) >= 0x20000) ? \
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((ms +0u) / 1000u) * hz : \
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((ms +0u) * hz) / 1000u)
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#endif
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#ifndef hztoms
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#define hztoms(t) \
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(__predict_false((t) >= 0x20000) ? \
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((t +0u) / hz) * 1000u : \
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|
((t +0u) * 1000u) / hz)
|
|
#endif
|
|
|
|
extern const int schedppq;
|
|
extern size_t coherency_unit;
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
/*
|
|
* Minimum alignment of "struct lwp" needed by the architecture.
|
|
* This counts when packing a lock byte into a word alongside a
|
|
* pointer to an LWP.
|
|
*/
|
|
#ifndef MIN_LWP_ALIGNMENT
|
|
#define MIN_LWP_ALIGNMENT 32
|
|
#endif
|
|
#endif /* !__ASSEMBLER__ */
|
|
|
|
#endif /* !_SYS_PARAM_H_ */
|