include/asm-sparc/current.h

   1 /*
   2  *  include/asm-sparc/current.h
   3  *
   4  * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
   5  * Copyright (C) 2002 Pete Zaitcev (zaitcev@yahoo.com)
   6  *
   7  *  Derived from "include/asm-s390/current.h" by
   8  *  Martin Schwidefsky (schwidefsky@de.ibm.com)
   9  *  Derived from "include/asm-i386/current.h"
  10  */
  11 #ifndef _ASM_CURRENT_H
  12 #define _ASM_CURRENT_H
  13
  14 /*
  15  * At the sparc64 DaveM keeps current_thread_info in %g4.
  16  * We might want to consider doing the same to shave a few cycles.
  17  */
  18
  19 #include <linux/thread_info.h>
  20
  21 struct task_struct;
  22
  23 /* Two stage process (inline + #define) for type-checking. */
  24 /* We also obfuscate get_current() to check if anyone used that by mistake. */
  25 static inline struct task_struct *__get_current(void)
  26 {
  27         return current_thread_info()->task;
  28 }
  29 #define current __get_current()
  30
  31 #endif /* !(_ASM_CURRENT_H) */