Linux kernel mirror (for testing)
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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>
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
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 */
24extern 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 */