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Russell Kingd6551e82006-06-21 13:31:52 +01001/*
Russell King4baa9922008-08-02 10:55:55 +01002 * arch/arm/include/asm/thread_notify.h
Russell Kingd6551e82006-06-21 13:31:52 +01003 *
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
Russell King797245f2009-12-18 14:34:43 +000044#define THREAD_NOTIFY_EXIT 1
Russell Kingd6551e82006-06-21 13:31:52 +010045#define THREAD_NOTIFY_SWITCH 2
Catalin Marinas2e82669a2011-04-06 16:16:29 +010046#define THREAD_NOTIFY_COPY 3
Russell Kingd6551e82006-06-21 13:31:52 +010047
48#endif
49#endif