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 */ 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 */ 27