thread_notify.h

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/*
 *  arch/arm/include/asm/thread_notify.h
 *
 *  Copyright (C) 2006 Russell King.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#ifndef ASMARM_THREAD_NOTIFY_H
#define ASMARM_THREAD_NOTIFY_H

#ifdef __KERNEL__

#ifndef __ASSEMBLY__

#include <linux/notifier.h>
#include <asm/thread_info.h>

static inline int thread_register_notifier(struct notifier_block *n)
{
    extern struct atomic_notifier_head thread_notify_head;
    return atomic_notifier_chain_register(&thread_notify_head, n);
}

static inline void thread_unregister_notifier(struct notifier_block *n)
{
    extern struct atomic_notifier_head thread_notify_head;
    atomic_notifier_chain_unregister(&thread_notify_head, n);
}

static inline void thread_notify(unsigned long rc, struct thread_info *thread)
{
    extern struct atomic_notifier_head thread_notify_head;
    atomic_notifier_call_chain(&thread_notify_head, rc, thread);
}

#endif

/*
 * These are the reason codes for the thread notifier.
 */
#define THREAD_NOTIFY_FLUSH 0
#define THREAD_NOTIFY_EXIT  1
#define THREAD_NOTIFY_SWITCH    2
#define THREAD_NOTIFY_COPY  3

#endif
#endif