tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9#ifndef _ASM_ARC_SWITCH_TO_H
10#define _ASM_ARC_SWITCH_TO_H
11
12#ifndef __ASSEMBLY__
13
14#include <linux/sched.h>
15
16#ifdef CONFIG_ARC_FPU_SAVE_RESTORE
17
18extern void fpu_save_restore(struct task_struct *p, struct task_struct *n);
19#define ARC_FPU_PREV(p, n) fpu_save_restore(p, n)
20#define ARC_FPU_NEXT(t)
21
22#else
23
24#define ARC_FPU_PREV(p, n)
25#define ARC_FPU_NEXT(n)
26
27#endif /* !CONFIG_ARC_FPU_SAVE_RESTORE */
28
29#ifdef CONFIG_ARC_PLAT_EZNPS
30extern void dp_save_restore(struct task_struct *p, struct task_struct *n);
31#define ARC_EZNPS_DP_PREV(p, n) dp_save_restore(p, n)
32#else
33#define ARC_EZNPS_DP_PREV(p, n)
34
35#endif /* !CONFIG_ARC_PLAT_EZNPS */
36
37struct task_struct *__switch_to(struct task_struct *p, struct task_struct *n);
38
39#define switch_to(prev, next, last) \
40do { \
41 ARC_EZNPS_DP_PREV(prev, next); \
42 ARC_FPU_PREV(prev, next); \
43 last = __switch_to(prev, next);\
44 ARC_FPU_NEXT(next); \
45 mb(); \
46} while (0)
47
48#endif
49
50#endif