1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (C) 2015-2016 Mentor Graphics 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun #include <linux/kernel.h> 7*4882a593Smuzhiyun #include <linux/module.h> 8*4882a593Smuzhiyun #include <linux/watchdog.h> 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #include "watchdog_pretimeout.h" 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun /** 13*4882a593Smuzhiyun * pretimeout_panic - Panic on watchdog pretimeout event 14*4882a593Smuzhiyun * @wdd - watchdog_device 15*4882a593Smuzhiyun * 16*4882a593Smuzhiyun * Panic, watchdog has not been fed till pretimeout event. 17*4882a593Smuzhiyun */ pretimeout_panic(struct watchdog_device * wdd)18*4882a593Smuzhiyunstatic void pretimeout_panic(struct watchdog_device *wdd) 19*4882a593Smuzhiyun { 20*4882a593Smuzhiyun panic("watchdog pretimeout event\n"); 21*4882a593Smuzhiyun } 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun static struct watchdog_governor watchdog_gov_panic = { 24*4882a593Smuzhiyun .name = "panic", 25*4882a593Smuzhiyun .pretimeout = pretimeout_panic, 26*4882a593Smuzhiyun }; 27*4882a593Smuzhiyun watchdog_gov_panic_register(void)28*4882a593Smuzhiyunstatic int __init watchdog_gov_panic_register(void) 29*4882a593Smuzhiyun { 30*4882a593Smuzhiyun return watchdog_register_governor(&watchdog_gov_panic); 31*4882a593Smuzhiyun } 32*4882a593Smuzhiyun watchdog_gov_panic_unregister(void)33*4882a593Smuzhiyunstatic void __exit watchdog_gov_panic_unregister(void) 34*4882a593Smuzhiyun { 35*4882a593Smuzhiyun watchdog_unregister_governor(&watchdog_gov_panic); 36*4882a593Smuzhiyun } 37*4882a593Smuzhiyun module_init(watchdog_gov_panic_register); 38*4882a593Smuzhiyun module_exit(watchdog_gov_panic_unregister); 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun MODULE_AUTHOR("Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>"); 41*4882a593Smuzhiyun MODULE_DESCRIPTION("Panic watchdog pretimeout governor"); 42*4882a593Smuzhiyun MODULE_LICENSE("GPL"); 43