1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 #ifndef __ASM_CSKY_SWITCH_TO_H 4 #define __ASM_CSKY_SWITCH_TO_H 5 6 #include <linux/thread_info.h> 7 #ifdef CONFIG_CPU_HAS_FPU 8 #include <abi/fpu.h> __switch_to_fpu(struct task_struct * prev,struct task_struct * next)9static inline void __switch_to_fpu(struct task_struct *prev, 10 struct task_struct *next) 11 { 12 save_to_user_fp(&prev->thread.user_fp); 13 restore_from_user_fp(&next->thread.user_fp); 14 } 15 #else __switch_to_fpu(struct task_struct * prev,struct task_struct * next)16static inline void __switch_to_fpu(struct task_struct *prev, 17 struct task_struct *next) 18 {} 19 #endif 20 21 /* 22 * Context switching is now performed out-of-line in switch_to.S 23 */ 24 extern struct task_struct *__switch_to(struct task_struct *, 25 struct task_struct *); 26 27 #define switch_to(prev, next, last) \ 28 do { \ 29 struct task_struct *__prev = (prev); \ 30 struct task_struct *__next = (next); \ 31 __switch_to_fpu(__prev, __next); \ 32 ((last) = __switch_to((prev), (next))); \ 33 } while (0) 34 35 #endif /* __ASM_CSKY_SWITCH_TO_H */ 36