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-rw-r--r--arch/c6x/include/asm/switch_to.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/c6x/include/asm/switch_to.h b/arch/c6x/include/asm/switch_to.h
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1/*
2 * Port on Texas Instruments TMS320C6x architecture
3 *
4 * Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
5 * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#ifndef _ASM_C6X_SWITCH_TO_H
12#define _ASM_C6X_SWITCH_TO_H
13
14#include <linux/linkage.h>
15
16#define prepare_to_switch() do { } while (0)
17
18struct task_struct;
19struct thread_struct;
20asmlinkage void *__switch_to(struct thread_struct *prev,
21 struct thread_struct *next,
22 struct task_struct *tsk);
23
24#define switch_to(prev, next, last) \
25 do { \
26 current->thread.wchan = (u_long) __builtin_return_address(0); \
27 (last) = __switch_to(&(prev)->thread, \
28 &(next)->thread, (prev)); \
29 mb(); \
30 current->thread.wchan = 0; \
31 } while (0)
32
33#endif /* _ASM_C6X_SWITCH_TO_H */