From 8978bfd2288adaa24d39fa15f57eb9e24ffeca12 Mon Sep 17 00:00:00 2001 From: Guan Xuetao Date: Wed, 28 Mar 2012 18:30:03 +0100 Subject: Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt] Disintegrate asm/system.h for Unicore32. (Compilation successful) The implementation details are not changed, but only splitted. BTW, some codestyles are adjusted. Signed-off-by: David Howells Signed-off-by: Guan Xuetao --- arch/unicore32/include/asm/switch_to.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 arch/unicore32/include/asm/switch_to.h (limited to 'arch/unicore32/include/asm/switch_to.h') diff --git a/arch/unicore32/include/asm/switch_to.h b/arch/unicore32/include/asm/switch_to.h new file mode 100644 index 000000000000..39572d2bd692 --- /dev/null +++ b/arch/unicore32/include/asm/switch_to.h @@ -0,0 +1,30 @@ +/* + * 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__ */ -- cgit v1.2.3