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, 106 insertions, 0 deletions

diff --git a/kernel/arch/s390/include/asm/irq.h b/kernel/arch/s390/include/asm/irq.h
new file mode 100644
index 000000000..ff95d15a2
--- /dev/null
+++ b/kernel/arch/s390/include/asm/irq.h
@@ -0,0 +1,106 @@
+#ifndef _ASM_IRQ_H
+#define _ASM_IRQ_H
+
+#define EXT_INTERRUPT	0
+#define IO_INTERRUPT	1
+#define THIN_INTERRUPT	2
+
+#define NR_IRQS_BASE	3
+
+#ifdef CONFIG_PCI_NR_MSI
+# define NR_IRQS	(NR_IRQS_BASE + CONFIG_PCI_NR_MSI)
+#else
+# define NR_IRQS	NR_IRQS_BASE
+#endif
+
+/* External interruption codes */
+#define EXT_IRQ_INTERRUPT_KEY	0x0040
+#define EXT_IRQ_CLK_COMP	0x1004
+#define EXT_IRQ_CPU_TIMER	0x1005
+#define EXT_IRQ_WARNING_TRACK	0x1007
+#define EXT_IRQ_MALFUNC_ALERT	0x1200
+#define EXT_IRQ_EMERGENCY_SIG	0x1201
+#define EXT_IRQ_EXTERNAL_CALL	0x1202
+#define EXT_IRQ_TIMING_ALERT	0x1406
+#define EXT_IRQ_MEASURE_ALERT	0x1407
+#define EXT_IRQ_SERVICE_SIG	0x2401
+#define EXT_IRQ_CP_SERVICE	0x2603
+#define EXT_IRQ_IUCV		0x4000
+
+#ifndef __ASSEMBLY__
+
+#include <linux/hardirq.h>
+#include <linux/percpu.h>
+#include <linux/cache.h>
+#include <linux/types.h>
+
+enum interruption_class {
+	IRQEXT_CLK,
+	IRQEXT_EXC,
+	IRQEXT_EMS,
+	IRQEXT_TMR,
+	IRQEXT_TLA,
+	IRQEXT_PFL,
+	IRQEXT_DSD,
+	IRQEXT_VRT,
+	IRQEXT_SCP,
+	IRQEXT_IUC,
+	IRQEXT_CMS,
+	IRQEXT_CMC,
+	IRQEXT_CMR,
+	IRQEXT_FTP,
+	IRQIO_CIO,
+	IRQIO_QAI,
+	IRQIO_DAS,
+	IRQIO_C15,
+	IRQIO_C70,
+	IRQIO_TAP,
+	IRQIO_VMR,
+	IRQIO_LCS,
+	IRQIO_CTC,
+	IRQIO_APB,
+	IRQIO_ADM,
+	IRQIO_CSC,
+	IRQIO_PCI,
+	IRQIO_MSI,
+	IRQIO_VIR,
+	IRQIO_VAI,
+	NMI_NMI,
+	CPU_RST,
+	NR_ARCH_IRQS
+};
+
+struct irq_stat {
+	unsigned int irqs[NR_ARCH_IRQS];
+};
+
+DECLARE_PER_CPU_SHARED_ALIGNED(struct irq_stat, irq_stat);
+
+static __always_inline void inc_irq_stat(enum interruption_class irq)
+{
+	__this_cpu_inc(irq_stat.irqs[irq]);
+}
+
+struct ext_code {
+	unsigned short subcode;
+	unsigned short code;
+};
+
+typedef void (*ext_int_handler_t)(struct ext_code, unsigned int, unsigned long);
+
+int register_external_irq(u16 code, ext_int_handler_t handler);
+int unregister_external_irq(u16 code, ext_int_handler_t handler);
+
+enum irq_subclass {
+	IRQ_SUBCLASS_MEASUREMENT_ALERT = 5,
+	IRQ_SUBCLASS_SERVICE_SIGNAL = 9,
+};
+
+void irq_subclass_register(enum irq_subclass subclass);
+void irq_subclass_unregister(enum irq_subclass subclass);
+
+#define irq_canonicalize(irq)  (irq)
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_IRQ_H */