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/include/linux/hw_random.h b/kernel/include/linux/hw_random.h
new file mode 100644
index 000000000..4f7d8f4b1
--- /dev/null
+++ b/kernel/include/linux/hw_random.h
@@ -0,0 +1,64 @@
+/*
+	Hardware Random Number Generator
+
+	Please read Documentation/hw_random.txt for details on use.
+
+	----------------------------------------------------------
+	This software may be used and distributed according to the terms
+        of the GNU General Public License, incorporated herein by reference.
+
+ */
+
+#ifndef LINUX_HWRANDOM_H_
+#define LINUX_HWRANDOM_H_
+
+#include <linux/completion.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/kref.h>
+
+/**
+ * struct hwrng - Hardware Random Number Generator driver
+ * @name:		Unique RNG name.
+ * @init:		Initialization callback (can be NULL).
+ * @cleanup:		Cleanup callback (can be NULL).
+ * @data_present:	Callback to determine if data is available
+ *			on the RNG. If NULL, it is assumed that
+ *			there is always data available.  *OBSOLETE*
+ * @data_read:		Read data from the RNG device.
+ *			Returns the number of lower random bytes in "data".
+ *			Must not be NULL.    *OBSOLETE*
+ * @read:		New API. drivers can fill up to max bytes of data
+ *			into the buffer. The buffer is aligned for any type.
+ * @priv:		Private data, for use by the RNG driver.
+ * @quality:		Estimation of true entropy in RNG's bitstream
+ *			(per mill).
+ */
+struct hwrng {
+	const char *name;
+	int (*init)(struct hwrng *rng);
+	void (*cleanup)(struct hwrng *rng);
+	int (*data_present)(struct hwrng *rng, int wait);
+	int (*data_read)(struct hwrng *rng, u32 *data);
+	int (*read)(struct hwrng *rng, void *data, size_t max, bool wait);
+	unsigned long priv;
+	unsigned short quality;
+
+	/* internal. */
+	struct list_head list;
+	struct kref ref;
+	struct completion cleanup_done;
+};
+
+struct device;
+
+/** Register a new Hardware Random Number Generator driver. */
+extern int hwrng_register(struct hwrng *rng);
+extern int devm_hwrng_register(struct device *dev, struct hwrng *rng);
+/** Unregister a Hardware Random Number Generator driver. */
+extern void hwrng_unregister(struct hwrng *rng);
+extern void devm_hwrng_unregister(struct device *dve, struct hwrng *rng);
+/** Feed random bits into the pool. */
+extern void add_hwgenerator_randomness(const char *buffer, size_t count, size_t entropy);
+
+#endif /* LINUX_HWRANDOM_H_ */