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TOMOYO Linux Cross Reference
Linux/arch/unicore32/include/asm/switch_to.h

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  1 /*
  2  * Task switching for PKUnity SoC and UniCore ISA
  3  *
  4  * Copyright (C) 2001-2012 GUAN Xue-tao
  5  *
  6  * This program is free software; you can redistribute it and/or modify
  7  * it under the terms of the GNU General Public License version 2 as
  8  * published by the Free Software Foundation.
  9  */
 10 #ifndef __UNICORE_SWITCH_TO_H__
 11 #define __UNICORE_SWITCH_TO_H__
 12 
 13 struct task_struct;
 14 struct thread_info;
 15 
 16 /*
 17  * switch_to(prev, next) should switch from task `prev' to `next'
 18  * `prev' will never be the same as `next'.  schedule() itself
 19  * contains the memory barrier to tell GCC not to cache `current'.
 20  */
 21 extern struct task_struct *__switch_to(struct task_struct *,
 22                 struct thread_info *, struct thread_info *);
 23 
 24 #define switch_to(prev, next, last)                                     \
 25         do {                                                            \
 26                 last = __switch_to(prev, task_thread_info(prev),        \
 27                                         task_thread_info(next));        \
 28         } while (0)
 29 
 30 #endif /* __UNICORE_SWITCH_TO_H__ */
 31 

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