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, 52 insertions, 0 deletions

diff --git a/kernel/include/linux/sem.h b/kernel/include/linux/sem.h
new file mode 100644
index 000000000..976ce3a19
--- /dev/null
+++ b/kernel/include/linux/sem.h
@@ -0,0 +1,52 @@
+#ifndef _LINUX_SEM_H
+#define _LINUX_SEM_H
+
+#include <linux/atomic.h>
+#include <linux/rcupdate.h>
+#include <linux/cache.h>
+#include <uapi/linux/sem.h>
+
+struct task_struct;
+
+/* One sem_array data structure for each set of semaphores in the system. */
+struct sem_array {
+	struct kern_ipc_perm	____cacheline_aligned_in_smp
+				sem_perm;	/* permissions .. see ipc.h */
+	time_t			sem_ctime;	/* last change time */
+	struct sem		*sem_base;	/* ptr to first semaphore in array */
+	struct list_head	pending_alter;	/* pending operations */
+						/* that alter the array */
+	struct list_head	pending_const;	/* pending complex operations */
+						/* that do not alter semvals */
+	struct list_head	list_id;	/* undo requests on this array */
+	int			sem_nsems;	/* no. of semaphores in array */
+	int			complex_count;	/* pending complex operations */
+};
+
+#ifdef CONFIG_SYSVIPC
+
+struct sysv_sem {
+	struct sem_undo_list *undo_list;
+};
+
+extern int copy_semundo(unsigned long clone_flags, struct task_struct *tsk);
+extern void exit_sem(struct task_struct *tsk);
+
+#else
+
+struct sysv_sem {
+	/* empty */
+};
+
+static inline int copy_semundo(unsigned long clone_flags, struct task_struct *tsk)
+{
+	return 0;
+}
+
+static inline void exit_sem(struct task_struct *tsk)
+{
+	return;
+}
+#endif
+
+#endif /* _LINUX_SEM_H */