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