gems-kernel/source/THIRDPARTY/xnu/bsd/conf/param.c
2024-06-03 11:29:39 -05:00

125 lines
5.1 KiB
C

/*
* Copyright (c) 2000-2019 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* 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
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/vnode_internal.h>
#include <sys/file_internal.h>
#include <sys/mbuf.h>
#include <sys/domain.h>
#include <sys/kernel.h>
#include <sys/quota.h>
#include <miscfs/fifofs/fifo.h>
#include <sys/shm_internal.h>
#include <sys/aio_kern.h>
struct timezone tz = { .tz_minuteswest = 0, .tz_dsttime = 0 };
#if !defined(__x86_64__)
#define NPROC 1000 /* Account for TOTAL_CORPSES_ALLOWED by making this slightly lower than we can. */
#define NPROC_PER_UID 950
#else
#define NPROC (20 + 32 * 32)
#define NPROC_PER_UID (NPROC/2)
#endif
/* NOTE: maxproc and hard_maxproc values are subject to device specific scaling in bsd_scale_setup */
#define HNPROC 2500 /* based on thread_max */
int maxproc = NPROC;
int maxprocperuid = NPROC_PER_UID;
#if !defined(__x86_64__)
int hard_maxproc = NPROC; /* hardcoded limit -- for ARM the number of processes is limited by the ASID space */
#else
int hard_maxproc = HNPROC; /* hardcoded limit */
#endif
int nprocs = 0; /* XXX */
int desiredvnodes = 0; /* desiredvnodes is set explicitly in unix_startup.c */
uint32_t kern_maxvnodes = 0; /* global, to be read from the device tree */
#if __LP64__
int maxfiles = 3 * OPEN_MAX;
#else
int maxfiles = OPEN_MAX + 2048;
#endif
unsigned int ncallout = 16 + 2 * NPROC;
unsigned int nmbclusters = NMBCLUSTERS;
int nport = NPROC / 2;
/*
* async IO (aio) configurable limits
*/
int aio_max_requests = CONFIG_AIO_MAX;
int aio_max_requests_per_process = CONFIG_AIO_PROCESS_MAX;
int aio_worker_threads = CONFIG_AIO_THREAD_COUNT;
struct buf *buf_headers;
struct domains_head domains = TAILQ_HEAD_INITIALIZER(domains);