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, 73 insertions, 0 deletions

diff --git a/kernel/arch/blackfin/include/asm/pda.h b/kernel/arch/blackfin/include/asm/pda.h
new file mode 100644
index 000000000..68d6f6618
--- /dev/null
+++ b/kernel/arch/blackfin/include/asm/pda.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2007-2009 Analog Devices Inc.
+ *                         Philippe Gerum <rpm@xenomai.org>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef _ASM_BLACKFIN_PDA_H
+#define _ASM_BLACKFIN_PDA_H
+
+#include <mach/anomaly.h>
+
+#ifndef __ASSEMBLY__
+
+struct blackfin_pda {			/* Per-processor Data Area */
+#ifdef CONFIG_SMP
+	struct blackfin_pda *next;
+#endif
+
+	unsigned long syscfg;
+#ifdef CONFIG_SMP
+	unsigned long imask;		/* Current IMASK value */
+#endif
+
+	unsigned long *ipdt;		/* Start of switchable I-CPLB table */
+	unsigned long *ipdt_swapcount;	/* Number of swaps in ipdt */
+	unsigned long *dpdt;		/* Start of switchable D-CPLB table */
+	unsigned long *dpdt_swapcount;	/* Number of swaps in dpdt */
+
+	/*
+	 * Single instructions can have multiple faults, which
+	 * need to be handled by traps.c, in irq5. We store
+	 * the exception cause to ensure we don't miss a
+	 * double fault condition
+	 */
+	unsigned long ex_iptr;
+	unsigned long ex_optr;
+	unsigned long ex_buf[4];
+	unsigned long ex_imask;		/* Saved imask from exception */
+	unsigned long ex_ipend;		/* Saved IPEND from exception */
+	unsigned long *ex_stack;	/* Exception stack space */
+
+#ifdef ANOMALY_05000261
+	unsigned long last_cplb_fault_retx;
+#endif
+	unsigned long dcplb_fault_addr;
+	unsigned long icplb_fault_addr;
+	unsigned long retx;
+	unsigned long seqstat;
+	unsigned int __nmi_count;	/* number of times NMI asserted on this CPU */
+#ifdef CONFIG_DEBUG_DOUBLEFAULT
+	unsigned long dcplb_doublefault_addr;
+	unsigned long icplb_doublefault_addr;
+	unsigned long retx_doublefault;
+	unsigned long seqstat_doublefault;
+#endif
+};
+
+struct blackfin_initial_pda {
+	void *retx;
+#ifdef CONFIG_DEBUG_DOUBLEFAULT
+	void *dcplb_doublefault_addr;
+	void *icplb_doublefault_addr;
+	void *retx_doublefault;
+	unsigned seqstat_doublefault;
+#endif
+};
+
+extern struct blackfin_pda cpu_pda[];
+
+#endif	/* __ASSEMBLY__ */
+
+#endif /* _ASM_BLACKFIN_PDA_H */