1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) 2015-2016 Mentor Graphics 4 */ 5 6 #include <linux/module.h> 7 #include <linux/printk.h> 8 #include <linux/watchdog.h> 9 10 #include "watchdog_pretimeout.h" 11 12 /** 13 * pretimeout_noop - No operation on watchdog pretimeout event 14 * @wdd - watchdog_device 15 * 16 * This function prints a message about pretimeout to kernel log. 17 */ 18 static void pretimeout_noop(struct watchdog_device *wdd) 19 { 20 pr_alert("watchdog%d: pretimeout event\n", wdd->id); 21 } 22 23 static struct watchdog_governor watchdog_gov_noop = { 24 .name = "noop", 25 .pretimeout = pretimeout_noop, 26 }; 27 28 static int __init watchdog_gov_noop_register(void) 29 { 30 return watchdog_register_governor(&watchdog_gov_noop); 31 } 32 33 static void __exit watchdog_gov_noop_unregister(void) 34 { 35 watchdog_unregister_governor(&watchdog_gov_noop); 36 } 37 module_init(watchdog_gov_noop_register); 38 module_exit(watchdog_gov_noop_unregister); 39 40 MODULE_AUTHOR("Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>"); 41 MODULE_DESCRIPTION("Panic watchdog pretimeout governor"); 42 MODULE_LICENSE("GPL"); 43