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, 57 insertions, 0 deletions

diff --git a/kernel/arch/mips/include/asm/irq.h b/kernel/arch/mips/include/asm/irq.h
new file mode 100644
index 000000000..f0db99f8d
--- /dev/null
+++ b/kernel/arch/mips/include/asm/irq.h
@@ -0,0 +1,57 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1994 by Waldorf GMBH, written by Ralf Baechle
+ * Copyright (C) 1995, 96, 97, 98, 99, 2000, 01, 02, 03 by Ralf Baechle
+ */
+#ifndef _ASM_IRQ_H
+#define _ASM_IRQ_H
+
+#include <linux/linkage.h>
+#include <linux/smp.h>
+#include <linux/irqdomain.h>
+
+#include <asm/mipsmtregs.h>
+
+#include <irq.h>
+
+#ifdef CONFIG_I8259
+static inline int irq_canonicalize(int irq)
+{
+	return ((irq == I8259A_IRQ_BASE + 2) ? I8259A_IRQ_BASE + 9 : irq);
+}
+#else
+#define irq_canonicalize(irq) (irq)	/* Sane hardware, sane code ... */
+#endif
+
+asmlinkage void plat_irq_dispatch(void);
+
+extern void do_IRQ(unsigned int irq);
+
+extern void arch_init_irq(void);
+extern void spurious_interrupt(void);
+
+extern int allocate_irqno(void);
+extern void alloc_legacy_irqno(void);
+extern void free_irqno(unsigned int irq);
+
+/*
+ * Before R2 the timer and performance counter interrupts were both fixed to
+ * IE7.	 Since R2 their number has to be read from the c0_intctl register.
+ */
+#define CP0_LEGACY_COMPARE_IRQ 7
+#define CP0_LEGACY_PERFCNT_IRQ 7
+
+extern int cp0_compare_irq;
+extern int cp0_compare_irq_shift;
+extern int cp0_perfcount_irq;
+extern int cp0_fdc_irq;
+
+extern int __weak get_c0_fdc_int(void);
+
+void arch_trigger_all_cpu_backtrace(bool);
+#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
+
+#endif /* _ASM_IRQ_H */