From 9e53ae20d423006e4990e0d4b50170e096d24ffd Mon Sep 17 00:00:00 2001
From: NAKAMURA Gou <go.nakamura.yw@hitachi-solutions.com>
Date: Tue, 27 Oct 2015 16:50:11 +0900
Subject: [PATCH] add memory barriers

- rmb()
- wmb()
---
 arch/x86/kernel/include/arch/cpu.h | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 arch/x86/kernel/include/arch/cpu.h

diff --git a/arch/x86/kernel/include/arch/cpu.h b/arch/x86/kernel/include/arch/cpu.h
new file mode 100644
index 00000000..efe16d8e
--- /dev/null
+++ b/arch/x86/kernel/include/arch/cpu.h
@@ -0,0 +1,28 @@
+/**
+ * \file cpu.h
+ *  License details are found in the file LICENSE.
+ * \brief
+ *  Declare architecture-dependent types and functions to control CPU.
+ * \author Gou Nakamura  <go.nakamura.yw@hitachi-solutions.com>
+ *      Copyright (C) 2015  RIKEN AICS
+ */
+/*
+ * HISTORY
+ */
+
+#ifndef ARCH_CPU_H
+#define ARCH_CPU_H
+
+#include <ihk/cpu.h>
+
+static inline void rmb(void)
+{
+	barrier();
+}
+
+static inline void wmb(void)
+{
+	barrier();
+}
+
+#endif /* ARCH_CPU_H */