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/*
* Task switching for PKUnity SoC and UniCore ISA
*
* Copyright (C) 2001-2012 GUAN Xue-tao
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __UNICORE_SWITCH_TO_H__
#define __UNICORE_SWITCH_TO_H__
struct task_struct;
struct thread_info;
/*
* switch_to(prev, next) should switch from task `prev' to `next'
* `prev' will never be the same as `next'. schedule() itself
* contains the memory barrier to tell GCC not to cache `current'.
*/
extern struct task_struct *__switch_to(struct task_struct *,
struct thread_info *, struct thread_info *);
#define switch_to(prev, next, last) \
do { \
last = __switch_to(prev, task_thread_info(prev), \
task_thread_info(next)); \
} while (0)
#endif /* __UNICORE_SWITCH_TO_H__ */