[linux-block.git] / include / asm-generic / switch_to.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Generic task switch macro wrapper.
 *
 * 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)
 */
#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 */
Commit	Line	Data
b4d0d230	1	/* SPDX-License-Identifier: GPL-2.0-or-later */
739d875d	2	/* Generic task switch macro wrapper.
158bc507 DH	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)
158bc507 DH	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	*/
	18	extern 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 */