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, 64 insertions, 0 deletions

diff --git a/kernel/drivers/cpufreq/cpufreq_powersave.c b/kernel/drivers/cpufreq/cpufreq_powersave.c
new file mode 100644
index 000000000..e3b874c23
--- /dev/null
+++ b/kernel/drivers/cpufreq/cpufreq_powersave.c
@@ -0,0 +1,64 @@
+/*
+ * linux/drivers/cpufreq/cpufreq_powersave.c
+ *
+ * Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
+ *
+ *
+ * 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.
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/cpufreq.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+static int cpufreq_governor_powersave(struct cpufreq_policy *policy,
+					unsigned int event)
+{
+	switch (event) {
+	case CPUFREQ_GOV_START:
+	case CPUFREQ_GOV_LIMITS:
+		pr_debug("setting to %u kHz because of event %u\n",
+							policy->min, event);
+		__cpufreq_driver_target(policy, policy->min,
+						CPUFREQ_RELATION_L);
+		break;
+	default:
+		break;
+	}
+	return 0;
+}
+
+#ifndef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
+static
+#endif
+struct cpufreq_governor cpufreq_gov_powersave = {
+	.name		= "powersave",
+	.governor	= cpufreq_governor_powersave,
+	.owner		= THIS_MODULE,
+};
+
+static int __init cpufreq_gov_powersave_init(void)
+{
+	return cpufreq_register_governor(&cpufreq_gov_powersave);
+}
+
+static void __exit cpufreq_gov_powersave_exit(void)
+{
+	cpufreq_unregister_governor(&cpufreq_gov_powersave);
+}
+
+MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
+MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'");
+MODULE_LICENSE("GPL");
+
+#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
+fs_initcall(cpufreq_gov_powersave_init);
+#else
+module_init(cpufreq_gov_powersave_init);
+#endif
+module_exit(cpufreq_gov_powersave_exit);