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kernel add
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/* include/asm/current.h
*
* Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Copyright (C) 2002 Pete Zaitcev (zaitcev@yahoo.com)
* Copyright (C) 2007 David S. Miller (davem@davemloft.net)
*
* Derived from "include/asm-s390/current.h" by
* Martin Schwidefsky (schwidefsky@de.ibm.com)
* Derived from "include/asm-i386/current.h"
*/
#ifndef _SPARC_CURRENT_H
#define _SPARC_CURRENT_H
#include <linux/thread_info.h>
#ifdef CONFIG_SPARC64
register struct task_struct *current asm("g4");
#endif
#ifdef CONFIG_SPARC32
/* We might want to consider using %g4 like sparc64 to shave a few cycles.
*
* Two stage process (inline + #define) for type-checking.
* We also obfuscate get_current() to check if anyone used that by mistake.
*/
struct task_struct;
static inline struct task_struct *__get_current(void)
{
return current_thread_info()->task;
}
#define current __get_current()
#endif
#endif /* !(_SPARC_CURRENT_H) */
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