linux/include/asm-generic/switch_to.h
David Howells 158bc507c2 Split the switch_to() wrapper out of asm-generic/system.h
Split the switch_to() wrapper out of asm-generic/system.h into its own
asm-generic/system.h as part of the asm/system.h disintegration.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2012-03-28 18:30:03 +01:00

30 lines
992 B
C

/* Generic task switch macro wrapper, based on MN10300 definitions.
*
* It should be possible to use these on really simple architectures,
* but it serves more as a starting point for new ports.
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef __ASM_GENERIC_SWITCH_TO_H
#define __ASM_GENERIC_SWITCH_TO_H
#include <linux/thread_info.h>
/*
* Context switching is now performed out-of-line in switch_to.S
*/
extern struct task_struct *__switch_to(struct task_struct *,
struct task_struct *);
#define switch_to(prev, next, last) \
do { \
((last) = __switch_to((prev), (next))); \
} while (0)
#endif /* __ASM_GENERIC_SWITCH_TO_H */