1 | /* |
2 | * Copyright (c) 2000-2019 Apple Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | /* |
29 | * Copyright (c) 1980, 1986, 1989, 1993 |
30 | * The Regents of the University of California. All rights reserved. |
31 | * (c) UNIX System Laboratories, Inc. |
32 | * All or some portions of this file are derived from material licensed |
33 | * to the University of California by American Telephone and Telegraph |
34 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with |
35 | * the permission of UNIX System Laboratories, Inc. |
36 | * |
37 | * Redistribution and use in source and binary forms, with or without |
38 | * modification, are permitted provided that the following conditions |
39 | * are met: |
40 | * 1. Redistributions of source code must retain the above copyright |
41 | * notice, this list of conditions and the following disclaimer. |
42 | * 2. Redistributions in binary form must reproduce the above copyright |
43 | * notice, this list of conditions and the following disclaimer in the |
44 | * documentation and/or other materials provided with the distribution. |
45 | * 3. All advertising materials mentioning features or use of this software |
46 | * must display the following acknowledgement: |
47 | * This product includes software developed by the University of |
48 | * California, Berkeley and its contributors. |
49 | * 4. Neither the name of the University nor the names of its contributors |
50 | * may be used to endorse or promote products derived from this software |
51 | * without specific prior written permission. |
52 | * |
53 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
54 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
55 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
56 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
57 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
58 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
59 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
60 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
61 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
62 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
63 | * SUCH DAMAGE. |
64 | * |
65 | * @(#)param.c 8.3 (Berkeley) 8/20/94 |
66 | */ |
67 | |
68 | #include <sys/param.h> |
69 | #include <sys/systm.h> |
70 | #include <sys/socket.h> |
71 | #include <sys/vnode_internal.h> |
72 | #include <sys/file_internal.h> |
73 | #include <sys/mbuf.h> |
74 | #include <sys/domain.h> |
75 | #include <sys/kernel.h> |
76 | #include <sys/quota.h> |
77 | #include <miscfs/fifofs/fifo.h> |
78 | #include <sys/shm_internal.h> |
79 | #include <sys/aio_kern.h> |
80 | |
81 | struct timezone tz = { .tz_minuteswest = 0, .tz_dsttime = 0 }; |
82 | |
83 | #if !defined(__x86_64__) |
84 | #define NPROC 1000 /* Account for TOTAL_CORPSES_ALLOWED by making this slightly lower than we can. */ |
85 | #define NPROC_PER_UID 950 |
86 | #else |
87 | #define NPROC (20 + 32 * 32) |
88 | #define NPROC_PER_UID (NPROC/2) |
89 | #endif |
90 | |
91 | /* NOTE: maxproc and hard_maxproc values are subject to device specific scaling in bsd_scale_setup */ |
92 | #define HNPROC 2500 /* based on thread_max */ |
93 | int maxproc = NPROC; |
94 | int maxprocperuid = NPROC_PER_UID; |
95 | |
96 | #if !defined(__x86_64__) |
97 | int hard_maxproc = NPROC; /* hardcoded limit -- for ARM the number of processes is limited by the ASID space */ |
98 | #else |
99 | int hard_maxproc = HNPROC; /* hardcoded limit */ |
100 | #endif |
101 | |
102 | int nprocs = 0; /* XXX */ |
103 | |
104 | int desiredvnodes = 0; /* desiredvnodes is set explicitly in unix_startup.c */ |
105 | uint32_t kern_maxvnodes = 0; /* global, to be read from the device tree */ |
106 | |
107 | #if __LP64__ |
108 | int maxfiles = 3 * OPEN_MAX; |
109 | #else |
110 | int maxfiles = OPEN_MAX + 2048; |
111 | #endif |
112 | |
113 | unsigned int ncallout = 16 + 2 * NPROC; |
114 | unsigned int nmbclusters = NMBCLUSTERS; |
115 | int nport = NPROC / 2; |
116 | |
117 | /* |
118 | * async IO (aio) configurable limits |
119 | */ |
120 | int aio_max_requests = CONFIG_AIO_MAX; |
121 | int aio_max_requests_per_process = CONFIG_AIO_PROCESS_MAX; |
122 | int aio_worker_threads = CONFIG_AIO_THREAD_COUNT; |
123 | |
124 | struct buf *; |
125 | struct domains_head domains = TAILQ_HEAD_INITIALIZER(domains); |
126 | |