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      1 /*	$NetBSD: kernel.h,v 1.35 2022/10/26 23:27:32 riastradh 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 #include <sys/param.h>
     44 
     45 /* Global variables for the kernel. */
     46 
     47 extern long hostid;
     48 extern char hostname[MAXHOSTNAMELEN];
     49 extern int hostnamelen;
     50 extern char domainname[MAXHOSTNAMELEN];
     51 extern int domainnamelen;
     52 
     53 extern int rtc_offset;		/* offset of rtc from UTC in minutes */
     54 
     55 extern int cold;		/* still working on startup */
     56 extern int start_init_exec;	/* init(8) may have started */
     57 extern int shutting_down;	/* system is shutting down */
     58 extern int tick;		/* usec per tick (1000000 / hz) */
     59 extern int tickadj;		/* "standard" clock skew, us./tick */
     60 extern int hz;			/* system clock's frequency */
     61 extern int stathz;		/* statistics clock's frequency */
     62 extern int profhz;		/* profiling clock's frequency */
     63 
     64 extern int profsrc;		/* profiling source */
     65 extern int psratio;		/* ratio: prof / stat */
     66 
     67 /* Accessors. */
     68 
     69 int getticks(void);
     70 
     71 #define PROFSRC_CLOCK	0
     72 
     73 #endif
     74 
     75 #endif /* _SYS_KERNEL_H_ */
     76