1 /* 2 * Copyright (C) 2015-2016 Mentor Graphics 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 */ 10 11 #include <linux/module.h> 12 #include <linux/printk.h> 13 #include <linux/watchdog.h> 14 15 #include "watchdog_pretimeout.h" 16 17 /** 18 * pretimeout_noop - No operation on watchdog pretimeout event 19 * @wdd - watchdog_device 20 * 21 * This function prints a message about pretimeout to kernel log. 22 */ 23 static void pretimeout_noop(struct watchdog_device *wdd) 24 { 25 pr_alert("watchdog%d: pretimeout event\n", wdd->id); 26 } 27 28 static struct watchdog_governor watchdog_gov_noop = { 29 .name = "noop", 30 .pretimeout = pretimeout_noop, 31 }; 32 33 static int __init watchdog_gov_noop_register(void) 34 { 35 return watchdog_register_governor(&watchdog_gov_noop); 36 } 37 38 static void __exit watchdog_gov_noop_unregister(void) 39 { 40 watchdog_unregister_governor(&watchdog_gov_noop); 41 } 42 module_init(watchdog_gov_noop_register); 43 module_exit(watchdog_gov_noop_unregister); 44 45 MODULE_AUTHOR("Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>"); 46 MODULE_DESCRIPTION("Panic watchdog pretimeout governor"); 47 MODULE_LICENSE("GPL"); 48