1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * arch/arm/include/asm/thread_notify.h
4 *
5 * Copyright (C) 2006 Russell King.
6 */
7 #ifndef ASMARM_THREAD_NOTIFY_H
8 #define ASMARM_THREAD_NOTIFY_H
9
10 #ifdef __KERNEL__
11
12 #ifndef __ASSEMBLY__
13
14 #include <linux/notifier.h>
15 #include <asm/thread_info.h>
16
17 static inline int thread_register_notifier(struct notifier_block *n)
18 {
19 extern struct atomic_notifier_head thread_notify_head;
20 return atomic_notifier_chain_register(&thread_notify_head, n);
21 }
22
23 static inline void thread_unregister_notifier(struct notifier_block *n)
24 {
25 extern struct atomic_notifier_head thread_notify_head;
26 atomic_notifier_chain_unregister(&thread_notify_head, n);
27 }
28
29 static inline void thread_notify(unsigned long rc, struct thread_info *thread)
30 {
31 extern struct atomic_notifier_head thread_notify_head;
32 atomic_notifier_call_chain(&thread_notify_head, rc, thread);
33 }
34
35 #endif
36
37 /*
38 * These are the reason codes for the thread notifier.
39 */
40 #define THREAD_NOTIFY_FLUSH 0
41 #define THREAD_NOTIFY_EXIT 1
42 #define THREAD_NOTIFY_SWITCH 2
43 #define THREAD_NOTIFY_COPY 3
44
45 #endif
46 #endif
47
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