Initial import

1 files changed, 39 insertions, 0 deletions

diff --git a/arch/x86/include/asm/spinlock_types.h b/arch/x86/include/asm/spinlock_types.h
new file mode 100644
index 000000000..5f9d7572d
--- /dev/null
+++ b/arch/x86/include/asm/spinlock_types.h
@@ -0,0 +1,39 @@
+#ifndef _ASM_X86_SPINLOCK_TYPES_H
+#define _ASM_X86_SPINLOCK_TYPES_H
+
+#include <linux/types.h>
+
+#ifdef CONFIG_PARAVIRT_SPINLOCKS
+#define __TICKET_LOCK_INC	2
+#define TICKET_SLOWPATH_FLAG	((__ticket_t)1)
+#else
+#define __TICKET_LOCK_INC	1
+#define TICKET_SLOWPATH_FLAG	((__ticket_t)0)
+#endif
+
+#if (CONFIG_NR_CPUS < (256 / __TICKET_LOCK_INC))
+typedef u8  __ticket_t;
+typedef u16 __ticketpair_t;
+#else
+typedef u16 __ticket_t;
+typedef u32 __ticketpair_t;
+#endif
+
+#define TICKET_LOCK_INC	((__ticket_t)__TICKET_LOCK_INC)
+
+#define TICKET_SHIFT	(sizeof(__ticket_t) * 8)
+
+typedef struct arch_spinlock {
+	union {
+		__ticketpair_t head_tail;
+		struct __raw_tickets {
+			__ticket_t head, tail;
+		} tickets;
+	};
+} arch_spinlock_t;
+
+#define __ARCH_SPIN_LOCK_UNLOCKED	{ { 0 } }
+
+#include <asm-generic/qrwlock_types.h>
+
+#endif /* _ASM_X86_SPINLOCK_TYPES_H */