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kernel add
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/* MN10300 Current task structure accessor
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _ASM_CURRENT_H
#define _ASM_CURRENT_H
#include <linux/thread_info.h>
/*
* dedicate E2 to keeping the current task pointer
*/
#ifdef CONFIG_MN10300_CURRENT_IN_E2
register struct task_struct *const current asm("e2") __attribute__((used));
#define get_current() current
extern struct task_struct *__current;
#else
static inline __attribute__((const))
struct task_struct *get_current(void)
{
return current_thread_info()->task;
}
#define current get_current()
#endif
#endif /* _ASM_CURRENT_H */
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