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/arch/tile/include/asm/timex.h b/kernel/arch/tile/include/asm/timex.h
new file mode 100644
index 000000000..dc987d53e
--- /dev/null
+++ b/kernel/arch/tile/include/asm/timex.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_TIMEX_H
+#define _ASM_TILE_TIMEX_H
+
+/*
+ * This rate should be a multiple of the possible HZ values (100, 250, 1000)
+ * and a fraction of the possible hardware timer frequencies.  Our timer
+ * frequency is highly tunable but also quite precise, so for the primary use
+ * of this value (setting ACT_HZ from HZ) we just pick a value that causes
+ * ACT_HZ to be set to HZ.  We make the value somewhat large just to be
+ * more robust in case someone tries out a new value of HZ.
+ */
+#define CLOCK_TICK_RATE	1000000
+
+typedef unsigned long long cycles_t;
+
+#if CHIP_HAS_SPLIT_CYCLE()
+cycles_t get_cycles(void);
+#define get_cycles_low() __insn_mfspr(SPR_CYCLE_LOW)
+#else
+static inline cycles_t get_cycles(void)
+{
+	return __insn_mfspr(SPR_CYCLE);
+}
+#define get_cycles_low() __insn_mfspr(SPR_CYCLE)   /* just get all 64 bits */
+#endif
+
+cycles_t get_clock_rate(void);
+
+/* Convert nanoseconds to core clock cycles. */
+cycles_t ns2cycles(unsigned long nsecs);
+
+/* Called at cpu initialization to set some low-level constants. */
+void setup_clock(void);
+
+/* Called at cpu initialization to start the tile-timer clock device. */
+void setup_tile_timer(void);
+
+#endif /* _ASM_TILE_TIMEX_H */