diff options
| author | Guan Xuetao <gxt@mprc.pku.edu.cn> | 2012-03-28 18:30:03 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2012-03-28 18:30:03 +0100 |
| commit | 8978bfd2288adaa24d39fa15f57eb9e24ffeca12 (patch) | |
| tree | a932d224f63890b38bbf29ca1fd468949c1e544c /arch/unicore32/include/asm/switch_to.h | |
| parent | bd119c69239322caafdb64517a806037d0d0c70a (diff) | |
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 <dhowells@redhat.com>
Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Diffstat (limited to 'arch/unicore32/include/asm/switch_to.h')
| -rw-r--r-- | arch/unicore32/include/asm/switch_to.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/unicore32/include/asm/switch_to.h b/arch/unicore32/include/asm/switch_to.h new file mode 100644 index 00000000000..39572d2bd69 --- /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__ */ |