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 
20 static 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 
26 static 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 
32 static 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
50