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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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+++ b/arch/c6x/include/asm/switch_to.h
@@ -0,0 +1,33 @@
+/*
+ * Port on Texas Instruments TMS320C6x architecture
+ *
+ * Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
+ * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef _ASM_C6X_SWITCH_TO_H
+#define _ASM_C6X_SWITCH_TO_H
+
+#include <linux/linkage.h>
+
+#define prepare_to_switch() do { } while (0)
+
+struct task_struct;
+struct thread_struct;
+asmlinkage void *__switch_to(struct thread_struct *prev,
+ struct thread_struct *next,
+ struct task_struct *tsk);
+
+#define switch_to(prev, next, last) \
+ do { \
+ current->thread.wchan = (u_long) __builtin_return_address(0); \
+ (last) = __switch_to(&(prev)->thread, \
+ &(next)->thread, (prev)); \
+ mb(); \
+ current->thread.wchan = 0; \
+ } while (0)
+
+#endif /* _ASM_C6X_SWITCH_TO_H */