| David Howells | 158bc50 | 2012-03-28 18:30:03 +0100 | [diff] [blame] | 1 | /* Generic task switch macro wrapper, based on MN10300 definitions. |
| 2 | * |
| 3 | * It should be possible to use these on really simple architectures, |
| 4 | * but it serves more as a starting point for new ports. |
| 5 | * |
| 6 | * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. |
| 7 | * Written by David Howells (dhowells@redhat.com) |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU General Public Licence |
| 11 | * as published by the Free Software Foundation; either version |
| 12 | * 2 of the Licence, or (at your option) any later version. |
| 13 | */ |
| 14 | #ifndef __ASM_GENERIC_SWITCH_TO_H |
| 15 | #define __ASM_GENERIC_SWITCH_TO_H |
| 16 | |
| 17 | #include <linux/thread_info.h> |
| 18 | |
| 19 | /* |
| 20 | * Context switching is now performed out-of-line in switch_to.S |
| 21 | */ |
| 22 | extern struct task_struct *__switch_to(struct task_struct *, |
| 23 | struct task_struct *); |
| 24 | |
| 25 | #define switch_to(prev, next, last) \ |
| 26 | do { \ |
| 27 | ((last) = __switch_to((prev), (next))); \ |
| 28 | } while (0) |
| 29 | |
| 30 | #endif /* __ASM_GENERIC_SWITCH_TO_H */ |