| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 |