Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 110 insertions, 0 deletions

diff --git a/kernel/arch/sh/include/asm/futex-irq.h b/kernel/arch/sh/include/asm/futex-irq.h
new file mode 100644
index 000000000..63d33129e
--- /dev/null
+++ b/kernel/arch/sh/include/asm/futex-irq.h
@@ -0,0 +1,110 @@
+#ifndef __ASM_SH_FUTEX_IRQ_H
+#define __ASM_SH_FUTEX_IRQ_H
+
+
+static inline int atomic_futex_op_xchg_set(int oparg, u32 __user *uaddr,
+					   int *oldval)
+{
+	unsigned long flags;
+	int ret;
+
+	local_irq_save(flags);
+
+	ret = get_user(*oldval, uaddr);
+	if (!ret)
+		ret = put_user(oparg, uaddr);
+
+	local_irq_restore(flags);
+
+	return ret;
+}
+
+static inline int atomic_futex_op_xchg_add(int oparg, u32 __user *uaddr,
+					   int *oldval)
+{
+	unsigned long flags;
+	int ret;
+
+	local_irq_save(flags);
+
+	ret = get_user(*oldval, uaddr);
+	if (!ret)
+		ret = put_user(*oldval + oparg, uaddr);
+
+	local_irq_restore(flags);
+
+	return ret;
+}
+
+static inline int atomic_futex_op_xchg_or(int oparg, u32 __user *uaddr,
+					  int *oldval)
+{
+	unsigned long flags;
+	int ret;
+
+	local_irq_save(flags);
+
+	ret = get_user(*oldval, uaddr);
+	if (!ret)
+		ret = put_user(*oldval | oparg, uaddr);
+
+	local_irq_restore(flags);
+
+	return ret;
+}
+
+static inline int atomic_futex_op_xchg_and(int oparg, u32 __user *uaddr,
+					   int *oldval)
+{
+	unsigned long flags;
+	int ret;
+
+	local_irq_save(flags);
+
+	ret = get_user(*oldval, uaddr);
+	if (!ret)
+		ret = put_user(*oldval & oparg, uaddr);
+
+	local_irq_restore(flags);
+
+	return ret;
+}
+
+static inline int atomic_futex_op_xchg_xor(int oparg, u32 __user *uaddr,
+					   int *oldval)
+{
+	unsigned long flags;
+	int ret;
+
+	local_irq_save(flags);
+
+	ret = get_user(*oldval, uaddr);
+	if (!ret)
+		ret = put_user(*oldval ^ oparg, uaddr);
+
+	local_irq_restore(flags);
+
+	return ret;
+}
+
+static inline int atomic_futex_op_cmpxchg_inatomic(u32 *uval,
+						   u32 __user *uaddr,
+						   u32 oldval, u32 newval)
+{
+	unsigned long flags;
+	int ret;
+	u32 prev = 0;
+
+	local_irq_save(flags);
+
+	ret = get_user(prev, uaddr);
+	if (!ret && oldval == prev)
+		ret = put_user(newval, uaddr);
+
+	local_irq_restore(flags);
+
+	*uval = prev;
+	return ret;
+}
+
+#endif /* __ASM_SH_FUTEX_IRQ_H */