#ifndef _X86_64_CURRENT_H
  #define _X86_64_CURRENT_H
  
  #if !defined(__ASSEMBLY__) 
  struct task_struct;
  
  #include <asm/pda.h>
  
  static inline struct task_struct *get_current(void) 
  { 
  	struct task_struct *t = read_pda(pcurrent); 
  	return t;
  } 
  
  #define current get_current()
  
  #else
  
  #ifndef ASM_OFFSET_H

  #include <asm/asm-offsets.h> 

  #endif
  
  #define GET_CURRENT(reg) movq %gs:(pda_pcurrent),reg
  
  #endif
  
  #endif /* !(_X86_64_CURRENT_H) */