Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / arm64 / include / asm / spinlock_types.h

diff --git a/kernel/arch/arm64/include/asm/spinlock_types.h b/kernel/arch/arm64/include/asm/spinlock_types.h
new file mode 100644 (file)
index 0000000..b8d3836
--- /dev/null
+++ b/kernel/arch/arm64/include/asm/spinlock_types.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2012 ARM Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef __ASM_SPINLOCK_TYPES_H
+#define __ASM_SPINLOCK_TYPES_H
+
+#if !defined(__LINUX_SPINLOCK_TYPES_H) && !defined(__ASM_SPINLOCK_H)
+# error "please don't include this file directly"
+#endif
+
+#define TICKET_SHIFT   16
+
+typedef struct {
+#ifdef __AARCH64EB__
+       u16 next;
+       u16 owner;
+#else
+       u16 owner;
+       u16 next;
+#endif
+} __aligned(4) arch_spinlock_t;
+
+#define __ARCH_SPIN_LOCK_UNLOCKED      { 0 , 0 }
+
+typedef struct {
+       volatile unsigned int lock;
+} arch_rwlock_t;
+
+#define __ARCH_RW_LOCK_UNLOCKED                { 0 }
+
+#endif