1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/* Generic task switch macro wrapper.
 3 *
 4 * It should be possible to use these on really simple architectures,
 5 * but it serves more as a starting point for new ports.
 6 *
 7 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 8 * Written by David Howells (dhowells@redhat.com)
 
 
 
 
 
 9 */
10#ifndef __ASM_GENERIC_SWITCH_TO_H
11#define __ASM_GENERIC_SWITCH_TO_H
12
13#include <linux/thread_info.h>
14
15/*
16 * Context switching is now performed out-of-line in switch_to.S
17 */
18extern struct task_struct *__switch_to(struct task_struct *,
19				       struct task_struct *);
20
21#define switch_to(prev, next, last)					\
22	do {								\
23		((last) = __switch_to((prev), (next)));			\
24	} while (0)
25
26#endif /* __ASM_GENERIC_SWITCH_TO_H */

 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 */
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 */