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, 41 insertions, 0 deletions

diff --git a/kernel/arch/arm/plat-versatile/sched-clock.c b/kernel/arch/arm/plat-versatile/sched-clock.c
new file mode 100644
index 000000000..c966ae90f
--- /dev/null
+++ b/kernel/arch/arm/plat-versatile/sched-clock.c
@@ -0,0 +1,41 @@
+/*
+ *  linux/arch/arm/plat-versatile/sched-clock.c
+ *
+ *  Copyright (C) 1999 - 2003 ARM Limited
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <linux/kernel.h>
+#include <linux/io.h>
+#include <linux/sched_clock.h>
+
+#include <plat/sched_clock.h>
+
+static void __iomem *ctr;
+
+static u64 notrace versatile_read_sched_clock(void)
+{
+	if (ctr)
+		return readl(ctr);
+
+	return 0;
+}
+
+void __init versatile_sched_clock_init(void __iomem *reg, unsigned long rate)
+{
+	ctr = reg;
+	sched_clock_register(versatile_read_sched_clock, 32, rate);
+}