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, 31 insertions, 0 deletions

diff --git a/kernel/lib/bust_spinlocks.c b/kernel/lib/bust_spinlocks.c
new file mode 100644
index 000000000..f8e0e5367
--- /dev/null
+++ b/kernel/lib/bust_spinlocks.c
@@ -0,0 +1,31 @@
+/*
+ * lib/bust_spinlocks.c
+ *
+ * Provides a minimal bust_spinlocks for architectures which don't have one of their own.
+ *
+ * bust_spinlocks() clears any spinlocks which would prevent oops, die(), BUG()
+ * and panic() information from reaching the user.
+ */
+
+#include <linux/kernel.h>
+#include <linux/printk.h>
+#include <linux/spinlock.h>
+#include <linux/tty.h>
+#include <linux/wait.h>
+#include <linux/vt_kern.h>
+#include <linux/console.h>
+
+
+void __attribute__((weak)) bust_spinlocks(int yes)
+{
+	if (yes) {
+		++oops_in_progress;
+	} else {
+#ifdef CONFIG_VT
+		unblank_screen();
+#endif
+		console_unblank();
+		if (--oops_in_progress == 0)
+			wake_up_klogd();
+	}
+}