/* Generic task switch macro wrapper, based on MN10300 definitions.
   *
   * It should be possible to use these on really simple architectures,
   * but it serves more as a starting point for new ports.
   *
   * 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_GENERIC_SWITCH_TO_H
  #define __ASM_GENERIC_SWITCH_TO_H
  
  #include <linux/thread_info.h>
  
  /*
   * Context switching is now performed out-of-line in switch_to.S
   */
  extern struct task_struct *__switch_to(struct task_struct *,
  				       struct task_struct *);
  
  #define switch_to(prev, next, last)					\
  	do {								\
  		((last) = __switch_to((prev), (next)));			\
  	} while (0)
  
  #endif /* __ASM_GENERIC_SWITCH_TO_H */