FreeBSD/Linux Kernel Cross Reference
sys/sys/kernel.h
1 /* $NetBSD: kernel.h,v 1.22 2003/10/02 12:14:00 christos Exp $ */
2
3 /*-
4 * Copyright (c) 1990, 1993
5 * The Regents of the University of California. All rights reserved.
6 * (c) UNIX System Laboratories, Inc.
7 * All or some portions of this file are derived from material licensed
8 * to the University of California by American Telephone and Telegraph
9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10 * the permission of UNIX System Laboratories, Inc.
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. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)kernel.h 8.3 (Berkeley) 1/21/94
37 */
38
39 #ifndef _SYS_KERNEL_H_
40 #define _SYS_KERNEL_H_
41
42 #if defined(_KERNEL) || defined(_STANDALONE)
43 /* Global variables for the kernel. */
44
45 extern long hostid;
46 extern char hostname[MAXHOSTNAMELEN];
47 extern int hostnamelen;
48 extern char domainname[MAXHOSTNAMELEN];
49 extern int domainnamelen;
50
51 extern volatile struct timeval mono_time;
52 extern struct timeval boottime;
53 extern volatile struct timeval time;
54
55 extern int rtc_offset; /* offset of rtc from UTC in minutes */
56
57 extern int cold; /* still working on startup */
58 extern int tick; /* usec per tick (1000000 / hz) */
59 extern int hardclock_ticks; /* # of hardclock ticks */
60 extern int tickfix; /* periodic tick adj. tick not integral */
61 extern int tickfixinterval; /* interval at which to apply adjustment */
62 extern int tickadj; /* "standard" clock skew, us./tick */
63 extern int hz; /* system clock's frequency */
64 extern int stathz; /* statistics clock's frequency */
65 extern int profhz; /* profiling clock's frequency */
66 extern int lbolt; /* once a second sleep address */
67
68 extern int profsrc; /* profiling source */
69
70 #define PROFSRC_CLOCK 0
71
72 #endif
73
74 #endif /* _SYS_KERNEL_H_ */
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