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/compat-signal.h b/kernel/arch/mips/include/asm/compat-signal.h
new file mode 100644
index 000000000..64e0b9343
--- /dev/null
+++ b/kernel/arch/mips/include/asm/compat-signal.h
@@ -0,0 +1,57 @@
+#ifndef __ASM_COMPAT_SIGNAL_H
+#define __ASM_COMPAT_SIGNAL_H
+
+#include <linux/bug.h>
+#include <linux/compat.h>
+#include <linux/compiler.h>
+
+#include <asm/signal.h>
+#include <asm/siginfo.h>
+
+#include <asm/uaccess.h>
+
+static inline int __copy_conv_sigset_to_user(compat_sigset_t __user *d,
+	const sigset_t *s)
+{
+	int err;
+
+	BUG_ON(sizeof(*d) != sizeof(*s));
+	BUG_ON(_NSIG_WORDS != 2);
+
+	err  = __put_user(s->sig[0],	   &d->sig[0]);
+	err |= __put_user(s->sig[0] >> 32, &d->sig[1]);
+	err |= __put_user(s->sig[1],	   &d->sig[2]);
+	err |= __put_user(s->sig[1] >> 32, &d->sig[3]);
+
+	return err;
+}
+
+static inline int __copy_conv_sigset_from_user(sigset_t *d,
+	const compat_sigset_t __user *s)
+{
+	int err;
+	union sigset_u {
+		sigset_t	s;
+		compat_sigset_t c;
+	} *u = (union sigset_u *) d;
+
+	BUG_ON(sizeof(*d) != sizeof(*s));
+	BUG_ON(_NSIG_WORDS != 2);
+
+#ifdef CONFIG_CPU_BIG_ENDIAN
+	err  = __get_user(u->c.sig[1], &s->sig[0]);
+	err |= __get_user(u->c.sig[0], &s->sig[1]);
+	err |= __get_user(u->c.sig[3], &s->sig[2]);
+	err |= __get_user(u->c.sig[2], &s->sig[3]);
+#endif
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+	err  = __get_user(u->c.sig[0], &s->sig[0]);
+	err |= __get_user(u->c.sig[1], &s->sig[1]);
+	err |= __get_user(u->c.sig[2], &s->sig[2]);
+	err |= __get_user(u->c.sig[3], &s->sig[3]);
+#endif
+
+	return err;
+}
+
+#endif /* __ASM_COMPAT_SIGNAL_H */