xref: /netbsd/sys/sys/kernel.h (revision 27ea14cc)
1*27ea14ccSriastradh /*	$NetBSD: kernel.h,v 1.35 2022/10/26 23:27:32 riastradh Exp $	*/
2fccfa11aScgd 
3a0a74294Scgd /*-
4a0a74294Scgd  * Copyright (c) 1990, 1993
5a0a74294Scgd  *	The Regents of the University of California.  All rights reserved.
6a0a74294Scgd  * (c) UNIX System Laboratories, Inc.
7a0a74294Scgd  * All or some portions of this file are derived from material licensed
8a0a74294Scgd  * to the University of California by American Telephone and Telegraph
9a0a74294Scgd  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10a0a74294Scgd  * the permission of UNIX System Laboratories, Inc.
11a0a74294Scgd  *
12a0a74294Scgd  * Redistribution and use in source and binary forms, with or without
13a0a74294Scgd  * modification, are permitted provided that the following conditions
14a0a74294Scgd  * are met:
15a0a74294Scgd  * 1. Redistributions of source code must retain the above copyright
16a0a74294Scgd  *    notice, this list of conditions and the following disclaimer.
17a0a74294Scgd  * 2. Redistributions in binary form must reproduce the above copyright
18a0a74294Scgd  *    notice, this list of conditions and the following disclaimer in the
19a0a74294Scgd  *    documentation and/or other materials provided with the distribution.
20aad01611Sagc  * 3. Neither the name of the University nor the names of its contributors
21a0a74294Scgd  *    may be used to endorse or promote products derived from this software
22a0a74294Scgd  *    without specific prior written permission.
23a0a74294Scgd  *
24a0a74294Scgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25a0a74294Scgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26a0a74294Scgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27a0a74294Scgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28a0a74294Scgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29a0a74294Scgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30a0a74294Scgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31a0a74294Scgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32a0a74294Scgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33a0a74294Scgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34a0a74294Scgd  * SUCH DAMAGE.
35a0a74294Scgd  *
36f2125498Scgd  *	@(#)kernel.h	8.3 (Berkeley) 1/21/94
37a0a74294Scgd  */
38a0a74294Scgd 
39d39928a2Sperry #ifndef _SYS_KERNEL_H_
40d39928a2Sperry #define _SYS_KERNEL_H_
41d39928a2Sperry 
42c7d852f6Schristos #if defined(_KERNEL) || defined(_STANDALONE)
437eb45c2cSchristos #include <sys/param.h>
447eb45c2cSchristos 
45a0a74294Scgd /* Global variables for the kernel. */
46a0a74294Scgd 
47a0a74294Scgd extern long hostid;
48a0a74294Scgd extern char hostname[MAXHOSTNAMELEN];
49a0a74294Scgd extern int hostnamelen;
50a0a74294Scgd extern char domainname[MAXHOSTNAMELEN];
51a0a74294Scgd extern int domainnamelen;
52a0a74294Scgd 
53b89a3425Sperry extern int rtc_offset;		/* offset of rtc from UTC in minutes */
54a0a74294Scgd 
5511cae425Sthorpej extern int cold;		/* still working on startup */
56*27ea14ccSriastradh extern int start_init_exec;	/* init(8) may have started */
5741065c56Sthorpej extern int shutting_down;	/* system is shutting down */
58a0a74294Scgd extern int tick;		/* usec per tick (1000000 / hz) */
59de4337abSkardel extern int tickadj;		/* "standard" clock skew, us./tick */
60a0a74294Scgd extern int hz;			/* system clock's frequency */
61a0a74294Scgd extern int stathz;		/* statistics clock's frequency */
62a0a74294Scgd extern int profhz;		/* profiling clock's frequency */
63d39928a2Sperry 
640b956d0bSbriggs extern int profsrc;		/* profiling source */
6543393cccSmatt extern int psratio;		/* ratio: prof / stat */
6692767d7dSchristos 
67b2f81755Smaxv /* Accessors. */
68b2f81755Smaxv 
69b2f81755Smaxv int getticks(void);
70b2f81755Smaxv 
710b956d0bSbriggs #define PROFSRC_CLOCK	0
7292767d7dSchristos 
730b956d0bSbriggs #endif
740b956d0bSbriggs 
75d39928a2Sperry #endif /* _SYS_KERNEL_H_ */
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