Move the backtrace() function from kern_subr.c to kern_debug.c.
[dragonfly.git] / sys / kern / kern_debug.c
CommitLineData
2b5dbafd
HP
1/*
2 * Copyright (c) 2003 Hiten M. Pandya <hmp@nxad.com>. All rights reserved.
3 * Copyright (c) 1986, 1988, 1991, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice unmodified, this list of conditions, and the following
11 * disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18*
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE LIABLE FOR ANY
23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
26 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 * Adoped from:
31 * src/sys/kern/kern_shutdown.c
32 *
33 * $DragonFly: src/sys/kern/kern_debug.c,v 1.1 2003/08/03 12:29:05 hmp Exp $
34 *
35 */
36
37/*
38 * Various debug routines.
39 *
40 */
41
42#include "opt_ddb.h"
43
44#include <sys/param.h>
45#include <sys/systm.h>
46
47#include <ddb/ddb.h>
48
49/*
50 * Simple DDB stack trace funtionality.
51 */
52void
53backtrace(void)
54{
55
56#ifdef DDB
57 printf("Stack backtrace:\n");
58 db_print_backtrace();
59#else
60 printf("Cannot print stack trace.\n");
61 printf("DDB kernel option is needed.\n");
62#endif
63}