/* SPDX-License-Identifier: GPL-2.0 */ // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. #ifndef __ASM_CSKY_SWITCH_TO_H #define __ASM_CSKY_SWITCH_TO_H #include <linux/thread_info.h> #ifdef CONFIG_CPU_HAS_FPU #include <abi/fpu.h> static inline void __switch_to_fpu(struct task_struct *prev, struct task_struct *next) { save_to_user_fp(&prev->thread.user_fp); restore_from_user_fp(&next->thread.user_fp); } #else static inline void __switch_to_fpu(struct task_struct *prev, struct task_struct *next) {} #endif /* * 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 { \ struct task_struct *__prev = (prev); \ struct task_struct *__next = (next); \ __switch_to_fpu(__prev, __next); \ ((last) = __switch_to((prev), (next))); \ } while (0) #endif /* __ASM_CSKY_SWITCH_TO_H */