Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / arc / include / asm / switch_to.h

diff --git a/kernel/arch/arc/include/asm/switch_to.h b/kernel/arch/arc/include/asm/switch_to.h
new file mode 100644 (file)
index 0000000..1b171ab
--- /dev/null
+++ b/kernel/arch/arc/include/asm/switch_to.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.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_ARC_SWITCH_TO_H
+#define _ASM_ARC_SWITCH_TO_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/sched.h>
+
+#ifdef CONFIG_ARC_FPU_SAVE_RESTORE
+
+extern void fpu_save_restore(struct task_struct *p, struct task_struct *n);
+#define ARC_FPU_PREV(p, n)     fpu_save_restore(p, n)
+#define ARC_FPU_NEXT(t)
+
+#else
+
+#define ARC_FPU_PREV(p, n)
+#define ARC_FPU_NEXT(n)
+
+#endif /* !CONFIG_ARC_FPU_SAVE_RESTORE */
+
+struct task_struct *__switch_to(struct task_struct *p, struct task_struct *n);
+
+#define switch_to(prev, next, last)    \
+do {                                   \
+       ARC_FPU_PREV(prev, next);       \
+       last = __switch_to(prev, next);\
+       ARC_FPU_NEXT(next);             \
+       mb();                           \
+} while (0)
+
+#endif
+
+#endif