xref: /illumos-gate/usr/src/uts/common/sys/var.h (revision 7c478bd9)
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 #pragma ident	"%Z%%M%	%I%	%E% SMI"
34 
35 #ifdef	__cplusplus
36 extern "C" {
37 #endif
38 
39 /*
40  * System Configuration Information
41  */
42 struct var {
43 	int	v_buf;		/* Nbr of I/O buffers.			*/
44 	int	v_call;		/* Nbr of callout (timeout) entries.	*/
45 	int	v_proc;		/* Max processes system wide		*/
46 	int	v_maxupttl;	/* Max user processes system wide	*/
47 	int	v_nglobpris;	/* Nbr of global sched prios configured	*/
48 	int	v_maxsyspri;	/* Max global pri used by sys class.	*/
49 	int	v_clist;	/* Nbr of clists allocated.		*/
50 	int	v_maxup;	/* Max number of processes per user.	*/
51 	int	v_hbuf;		/* Nbr of hash buffers to allocate.	*/
52 	int	v_hmask;	/* Hash mask for buffers.		*/
53 	int	v_pbuf;		/* Nbr of physical I/O buffers.		*/
54 	int	v_sptmap;	/* Size of system virtual space		*/
55 				/* allocation map.			*/
56 	int	v_maxpmem;	/* The maximum physical memory to use.	*/
57 				/* If v_maxpmem == 0, then use all	*/
58 				/* available physical memory.		*/
59 				/* Otherwise, value is amount of mem to	*/
60 				/* use specified in pages.		*/
61 	int	v_autoup;	/* The age a delayed-write buffer must	*/
62 				/* be in seconds before bdflush will	*/
63 				/* write it out.			*/
64 	int	v_bufhwm;	/* high-water-mark of buffer cache	*/
65 				/* memory usage, in units of K Bytes	*/
66 };
67 
68 extern struct var v;
69 
70 #ifdef	__cplusplus
71 }
72 #endif
73 
74 #endif	/* _SYS_VAR_H */
75