/* * 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>");