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_RELEASE 1
45 #define THREAD_NOTIFY_SWITCH 2
46
47 #endif
48 #endif
49
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