xref: /illumos-gate/usr/src/uts/common/sys/var.h (revision b4203d75)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28 /*	  All Rights Reserved	*/
29 
30 #ifndef _SYS_VAR_H
31 #define	_SYS_VAR_H
32 
33 #ifdef	__cplusplus
34 extern "C" {
35 #endif
36 
37 /*
38  * System Configuration Information
39  */
40 struct var {
41 	int	v_buf;		/* Nbr of I/O buffers.			*/
42 	int	v_call;		/* Nbr of callout (timeout) entries.	*/
43 	int	v_proc;		/* Max processes system wide		*/
44 	int	v_maxupttl;	/* Max user processes system wide	*/
45 	int	v_nglobpris;	/* Nbr of global sched prios configured	*/
46 	int	v_maxsyspri;	/* Max global pri used by sys class.	*/
47 	int	v_clist;	/* Nbr of clists allocated.		*/
48 	int	v_maxup;	/* Max number of processes per user.	*/
49 	int	v_hbuf;		/* Nbr of hash buffers to allocate.	*/
50 	int	v_hmask;	/* Hash mask for buffers.		*/
51 	int	v_pbuf;		/* Nbr of physical I/O buffers.		*/
52 	int	v_sptmap;	/* Size of system virtual space		*/
53 				/* allocation map.			*/
54 	int	v_maxpmem;	/* The maximum physical memory to use.	*/
55 				/* If v_maxpmem == 0, then use all	*/
56 				/* available physical memory.		*/
57 				/* Otherwise, value is amount of mem to	*/
58 				/* use specified in pages.		*/
59 	int	v_autoup;	/* The age a delayed-write buffer must	*/
60 				/* be in seconds before bdflush will	*/
61 				/* write it out.			*/
62 	int	v_bufhwm;	/* high-water-mark of buffer cache	*/
63 				/* memory usage, in units of K Bytes	*/
64 };
65 
66 extern struct var v;
67 
68 #ifdef	__cplusplus
69 }
70 #endif
71 
72 #endif	/* _SYS_VAR_H */
73