LXR linux/arch/arm/include/asm/thread

   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
  17static 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
  23static 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
  29static 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