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#define THREAD_NOTIFY_COPY	3
47
48#endif
49#endif