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, 85 insertions, 0 deletions

diff --git a/kernel/arch/cris/include/asm/thread_info.h b/kernel/arch/cris/include/asm/thread_info.h
new file mode 100644
index 000000000..4ead1b40d
--- /dev/null
+++ b/kernel/arch/cris/include/asm/thread_info.h
@@ -0,0 +1,85 @@
+/* thread_info.h: CRIS low-level thread information
+ *
+ * Copyright (C) 2002  David Howells (dhowells@redhat.com)
+ * - Incorporating suggestions made by Linus Torvalds and Dave Miller
+ * 
+ * CRIS port by Axis Communications
+ */
+
+#ifndef _ASM_THREAD_INFO_H
+#define _ASM_THREAD_INFO_H
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+#include <asm/types.h>
+#include <asm/processor.h>
+#include <arch/thread_info.h>
+#include <asm/segment.h>
+#endif
+
+
+/*
+ * low level task data that entry.S needs immediate access to
+ * - this struct should fit entirely inside of one cache line
+ * - this struct shares the supervisor stack pages
+ * - if the contents of this structure are changed, the assembly constants must also be changed
+ */
+#ifndef __ASSEMBLY__
+struct thread_info {
+	struct task_struct	*task;		/* main task structure */
+	unsigned long		flags;		/* low level flags */
+	__u32			cpu;		/* current CPU */
+	int			preempt_count;	/* 0 => preemptable, <0 => BUG */
+	__u32			tls;		/* TLS for this thread */
+
+	mm_segment_t		addr_limit;	/* thread address space:
+					 	   0-0xBFFFFFFF for user-thead
+						   0-0xFFFFFFFF for kernel-thread
+						*/
+	__u8			supervisor_stack[0];
+};
+
+#endif
+
+/*
+ * macros/functions for gaining access to the thread information structure
+ */
+#ifndef __ASSEMBLY__
+#define INIT_THREAD_INFO(tsk)				\
+{							\
+	.task		= &tsk,				\
+	.flags		= 0,				\
+	.cpu		= 0,				\
+	.preempt_count	= INIT_PREEMPT_COUNT,		\
+	.addr_limit	= KERNEL_DS,			\
+}
+
+#define init_thread_info	(init_thread_union.thread_info)
+
+#endif /* !__ASSEMBLY__ */
+
+/*
+ * thread information flags
+ * - these are process state flags that various assembly files may need to access
+ * - pending work-to-be-done flags are in LSW
+ * - other flags in MSW
+ */
+#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
+#define TIF_NOTIFY_RESUME	1	/* resumption notification requested */
+#define TIF_SIGPENDING		2	/* signal pending */
+#define TIF_NEED_RESCHED	3	/* rescheduling necessary */
+#define TIF_RESTORE_SIGMASK	9	/* restore signal mask in do_signal() */
+#define TIF_MEMDIE		17	/* is terminating due to OOM killer */
+
+#define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
+#define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)
+#define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
+
+#define _TIF_WORK_MASK		0x0000FFFE	/* work to do on interrupt/exception return */
+#define _TIF_ALLWORK_MASK	0x0000FFFF	/* work to do on any return to u-space */
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_THREAD_INFO_H */