summaryrefslogtreecommitdiff
path: root/kernel/backtracetest.c
blob: d1a7605c5b8fe01368e7290f2d215512d646cc32 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
/*
 * Simple stack backtrace regression test module
 *
 * (C) Copyright 2008 Intel Corporation
 * Author: Arjan van de Ven <arjan@linux.intel.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; version 2
 * of the License.
 */

#include <linux/module.h>
#include <linux/sched.h>
#include <linux/delay.h>

static struct timer_list backtrace_timer;

static void backtrace_test_timer(unsigned long data)
{
	printk("Testing a backtrace from irq context.\n");
	printk("The following trace is a kernel self test and not a bug!\n");
	dump_stack();
}
static int backtrace_regression_test(void)
{
	printk("====[ backtrace testing ]===========\n");
	printk("Testing a backtrace from process context.\n");
	printk("The following trace is a kernel self test and not a bug!\n");
	dump_stack();

	init_timer(&backtrace_timer);
	backtrace_timer.function = backtrace_test_timer;
	mod_timer(&backtrace_timer, jiffies + 10);

	msleep(10);
	printk("====[ end of backtrace testing ]====\n");
	return 0;
}

static void exitf(void)
{
}

module_init(backtrace_regression_test);
module_exit(exitf);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Arjan van de Ven <arjan@linux.intel.com>");