| /* |
| * 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__ */ |
