Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / asm-generic / switch_to.h

diff --git a/kernel/include/asm-generic/switch_to.h b/kernel/include/asm-generic/switch_to.h
new file mode 100644 (file)
index 0000000..052c4ac
--- /dev/null
+++ b/kernel/include/asm-generic/switch_to.h
@@ -0,0 +1,30 @@
+/* Generic task switch macro wrapper, based on MN10300 definitions.
+ *
+ * It should be possible to use these on really simple architectures,
+ * but it serves more as a starting point for new ports.
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef __ASM_GENERIC_SWITCH_TO_H
+#define __ASM_GENERIC_SWITCH_TO_H
+
+#include <linux/thread_info.h>
+
+/*
+ * Context switching is now performed out-of-line in switch_to.S
+ */
+extern struct task_struct *__switch_to(struct task_struct *,
+                                      struct task_struct *);
+
+#define switch_to(prev, next, last)                                    \
+       do {                                                            \
+               ((last) = __switch_to((prev), (next)));                 \
+       } while (0)
+
+#endif /* __ASM_GENERIC_SWITCH_TO_H */