blob: 052c4ac04fd5459bd89107013f3a2d6e7f9d61b9 [file] [log] [blame]
David Howells158bc502012-03-28 18:30:03 +01001/* 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 */
22extern 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 */