18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-or-later */ 28c2ecf20Sopenharmony_ci/* Generic task switch macro wrapper. 38c2ecf20Sopenharmony_ci * 48c2ecf20Sopenharmony_ci * It should be possible to use these on really simple architectures, 58c2ecf20Sopenharmony_ci * but it serves more as a starting point for new ports. 68c2ecf20Sopenharmony_ci * 78c2ecf20Sopenharmony_ci * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. 88c2ecf20Sopenharmony_ci * Written by David Howells (dhowells@redhat.com) 98c2ecf20Sopenharmony_ci */ 108c2ecf20Sopenharmony_ci#ifndef __ASM_GENERIC_SWITCH_TO_H 118c2ecf20Sopenharmony_ci#define __ASM_GENERIC_SWITCH_TO_H 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_ci#include <linux/thread_info.h> 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ci/* 168c2ecf20Sopenharmony_ci * Context switching is now performed out-of-line in switch_to.S 178c2ecf20Sopenharmony_ci */ 188c2ecf20Sopenharmony_ciextern struct task_struct *__switch_to(struct task_struct *, 198c2ecf20Sopenharmony_ci struct task_struct *); 208c2ecf20Sopenharmony_ci 218c2ecf20Sopenharmony_ci#define switch_to(prev, next, last) \ 228c2ecf20Sopenharmony_ci do { \ 238c2ecf20Sopenharmony_ci ((last) = __switch_to((prev), (next))); \ 248c2ecf20Sopenharmony_ci } while (0) 258c2ecf20Sopenharmony_ci 268c2ecf20Sopenharmony_ci#endif /* __ASM_GENERIC_SWITCH_TO_H */ 27