1/* 2 * arch/arm/include/asm/thread_notify.h 3 * 4 * Copyright (C) 2006 Russell King. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10#ifndef ASMARM_THREAD_NOTIFY_H 11#define ASMARM_THREAD_NOTIFY_H 12 13#ifdef __KERNEL__ 14 15#ifndef __ASSEMBLY__ 16 17#include <linux/notifier.h> 18#include <asm/thread_info.h> 19 20static inline int thread_register_notifier(struct notifier_block *n) 21{ 22 extern struct atomic_notifier_head thread_notify_head; 23 return atomic_notifier_chain_register(&thread_notify_head, n); 24} 25 26static inline void thread_unregister_notifier(struct notifier_block *n) 27{ 28 extern struct atomic_notifier_head thread_notify_head; 29 atomic_notifier_chain_unregister(&thread_notify_head, n); 30} 31 32static inline void thread_notify(unsigned long rc, struct thread_info *thread) 33{ 34 extern struct atomic_notifier_head thread_notify_head; 35 atomic_notifier_call_chain(&thread_notify_head, rc, thread); 36} 37 38#endif 39 40/* 41 * These are the reason codes for the thread notifier. 42 */ 43#define THREAD_NOTIFY_FLUSH 0 44#define THREAD_NOTIFY_EXIT 1 45#define THREAD_NOTIFY_SWITCH 2 46 47#endif 48#endif 49