linux/arch/arm/include/asm/thread_notify.h
Catalin Marinas 2e82669acf ARM: 6867/1: Introduce THREAD_NOTIFY_COPY for copy_thread() hooks
This patch adds THREAD_NOTIFY_COPY for calling registered handlers
during the copy_thread() function call. It also changes the VFP handler
to use a switch statement rather than if..else and ignore this event.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-04-10 21:13:36 +01:00

50 lines
1.2 KiB
C

/*
* 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