Commit | Line | Data |
---|---|---|
169d8a33 RG |
1 | /* |
2 | * Copyright (c) UNIX System Laboratories, Inc. All or some portions | |
3 | * of this file are derived from material licensed to the | |
4 | * University of California by American Telephone and Telegraph Co. | |
5 | * or UNIX System Laboratories, Inc. and are reproduced herein with | |
6 | * the permission of UNIX System Laboratories, Inc. | |
7 | */ | |
15637ed4 RG |
8 | /* |
9 | * Copyright (c) 1980, 1986, 1989 Regents of the University of California. | |
10 | * All rights reserved. | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * 1. Redistributions of source code must retain the above copyright | |
16 | * notice, this list of conditions and the following disclaimer. | |
17 | * 2. Redistributions in binary form must reproduce the above copyright | |
18 | * notice, this list of conditions and the following disclaimer in the | |
19 | * documentation and/or other materials provided with the distribution. | |
20 | * 3. All advertising materials mentioning features or use of this software | |
21 | * must display the following acknowledgement: | |
22 | * This product includes software developed by the University of | |
23 | * California, Berkeley and its contributors. | |
24 | * 4. Neither the name of the University nor the names of its contributors | |
25 | * may be used to endorse or promote products derived from this software | |
26 | * without specific prior written permission. | |
27 | * | |
28 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
29 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
30 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
31 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
32 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
33 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
34 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
35 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
36 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
37 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
38 | * SUCH DAMAGE. | |
39 | * | |
be581a37 | 40 | * from: @(#)param.c 7.20 (Berkeley) 6/27/91 |
169d8a33 | 41 | * $Id: param.c,v 1.9 1994/02/02 17:56:54 ache Exp $ |
15637ed4 RG |
42 | */ |
43 | ||
44 | #include "sys/param.h" | |
45 | #include "sys/systm.h" | |
46 | #include "sys/socket.h" | |
47 | #include "sys/proc.h" | |
48 | #include "sys/vnode.h" | |
49 | #include "sys/file.h" | |
50 | #include "sys/callout.h" | |
51 | #include "sys/clist.h" | |
52 | #include "sys/mbuf.h" | |
53 | #include "ufs/quota.h" | |
54 | #include "sys/kernel.h" | |
55 | #ifdef SYSVSHM | |
56 | #include "machine/vmparam.h" | |
57 | #include "sys/shm.h" | |
58 | #endif | |
24fd64ab DG |
59 | #ifdef SYSVSEM |
60 | #include "sys/sem.h" | |
61 | #endif | |
62 | #ifdef SYSVMSG | |
63 | #include "sys/msg.h" | |
64 | #endif | |
15637ed4 RG |
65 | |
66 | /* | |
67 | * System parameter formulae. | |
68 | * | |
69 | * This file is copied into each directory where we compile | |
70 | * the kernel; it should be modified there to suit local taste | |
71 | * if necessary. | |
72 | * | |
d7f27d01 | 73 | * Compiled with -DHZ=xx -DTIMEZONE=x -DDST=x -DMAXUSERS=xx -DMAXFDESCS=xx |
15637ed4 RG |
74 | */ |
75 | ||
76 | #ifndef HZ | |
77 | #define HZ 100 | |
78 | #endif | |
79 | int hz = HZ; | |
80 | int tick = 1000000 / HZ; | |
e957266e | 81 | #ifndef TICKADJ |
15637ed4 | 82 | int tickadj = 240000 / (60 * HZ); /* can adjust 240ms in 60s */ |
e957266e | 83 | #else |
8b1f8702 | 84 | int tickadj = TICKADJ; /* NTP users may prefer a smaller value */ |
e957266e | 85 | #endif |
15637ed4 RG |
86 | struct timezone tz = { TIMEZONE, DST }; |
87 | #define NPROC (20 + 16 * MAXUSERS) | |
88 | int maxproc = NPROC; | |
a200ca2b DG |
89 | #define NTEXT NPROC /* actually the object cache */ |
90 | int vm_cache_max = NTEXT / 2 + 16; | |
91 | #define NVNODE (NPROC + NTEXT + 100 + 16) | |
15637ed4 | 92 | long desiredvnodes = NVNODE; |
d7f27d01 | 93 | int maxfdescs = MAXFDESCS; |
15637ed4 RG |
94 | int maxfiles = 3 * (NPROC + MAXUSERS) + 80; |
95 | int ncallout = 16 + NPROC; | |
96 | int nclist = 60 + 12 * MAXUSERS; | |
97 | int nmbclusters = NMBCLUSTERS; | |
98 | int fscale = FSCALE; /* kernel uses `FSCALE', user uses `fscale' */ | |
99 | ||
100 | /* | |
101 | * Values in support of System V compatible shared memory. XXX | |
102 | */ | |
103 | #ifdef SYSVSHM | |
104 | #define SHMMAX (SHMMAXPGS*NBPG) | |
105 | #define SHMMIN 1 | |
106 | #define SHMMNI 32 /* <= SHMMMNI in shm.h */ | |
107 | #define SHMSEG 8 | |
108 | #define SHMALL (SHMMAXPGS/CLSIZE) | |
109 | ||
110 | struct shminfo shminfo = { | |
111 | SHMMAX, | |
112 | SHMMIN, | |
113 | SHMMNI, | |
114 | SHMSEG, | |
115 | SHMALL | |
116 | }; | |
117 | #endif | |
118 | ||
24fd64ab DG |
119 | /* |
120 | * Values in support of System V compatible semaphores. | |
121 | */ | |
122 | ||
123 | #ifdef SYSVSEM | |
124 | ||
125 | struct seminfo seminfo = { | |
126 | SEMMAP, /* # of entries in semaphore map */ | |
127 | SEMMNI, /* # of semaphore identifiers */ | |
128 | SEMMNS, /* # of semaphores in system */ | |
129 | SEMMNU, /* # of undo structures in system */ | |
130 | SEMMSL, /* max # of semaphores per id */ | |
131 | SEMOPM, /* max # of operations per semop call */ | |
132 | SEMUME, /* max # of undo entries per process */ | |
133 | SEMUSZ, /* size in bytes of undo structure */ | |
134 | SEMVMX, /* semaphore maximum value */ | |
135 | SEMAEM /* adjust on exit max value */ | |
136 | }; | |
137 | #endif | |
138 | ||
139 | /* | |
140 | * Values in support of System V compatible messages. | |
141 | */ | |
142 | ||
143 | #ifdef SYSVMSG | |
144 | ||
145 | struct msginfo msginfo = { | |
146 | MSGMAX, /* max chars in a message */ | |
147 | MSGMNI, /* # of message queue identifiers */ | |
148 | MSGMNB, /* max chars in a queue */ | |
149 | MSGTQL, /* max messages in system */ | |
150 | MSGSSZ, /* size of a message segment */ | |
151 | /* (must be small power of 2 greater than 4) */ | |
152 | MSGSEG /* number of message segments */ | |
153 | }; | |
154 | #endif | |
155 | ||
15637ed4 RG |
156 | /* |
157 | * These are initialized at bootstrap time | |
158 | * to values dependent on memory size | |
159 | */ | |
160 | int nbuf, nswbuf; | |
161 | ||
162 | /* | |
163 | * These have to be allocated somewhere; allocating | |
164 | * them here forces loader errors if this file is omitted | |
165 | * (if they've been externed everywhere else; hah!). | |
166 | */ | |
167 | struct callout *callout; | |
168 | struct cblock *cfree; | |
169 | struct buf *buf, *swbuf; | |
170 | char *buffers; | |
171 | ||
172 | /* | |
173 | * Proc/pgrp hashing. | |
174 | * Here so that hash table sizes can depend on MAXUSERS/NPROC. | |
175 | * Hash size must be a power of two. | |
176 | * NOW omission of this file will cause loader errors! | |
177 | */ | |
178 | ||
179 | #if NPROC > 1024 | |
180 | #define PIDHSZ 512 | |
181 | #else | |
182 | #if NPROC > 512 | |
183 | #define PIDHSZ 256 | |
184 | #else | |
185 | #if NPROC > 256 | |
186 | #define PIDHSZ 128 | |
187 | #else | |
188 | #define PIDHSZ 64 | |
189 | #endif | |
190 | #endif | |
191 | #endif | |
192 | ||
193 | struct proc *pidhash[PIDHSZ]; | |
194 | struct pgrp *pgrphash[PIDHSZ]; | |
195 | int pidhashmask = PIDHSZ - 1; | |
e957266e GW |
196 | |
197 | /* From kernel.h: */ | |
198 | long hostid; | |
199 | char hostname[MAXHOSTNAMELEN]; | |
200 | int hostnamelen; | |
201 | char domainname[MAXHOSTNAMELEN]; | |
202 | int domainnamelen; | |
203 | ||
204 | struct timeval boottime; | |
205 | struct timeval time; | |
206 | ||
207 | int phz; | |
208 | int lbolt; | |
209 | ||
210 | fixpt_t avenrunnable[3]; | |
211 | #if defined(COMPAT_43) && (defined(vax) || defined(tahoe)) | |
212 | double avenrun[3]; | |
213 | #endif /* COMPAT_43 */ | |
214 | ||
215 | #ifdef GPROF | |
216 | u_long s_textsize; | |
217 | int profiling; | |
218 | u_short *kcount; | |
219 | char *s_lowpc; | |
220 | #endif |