From 28318daf791b692f2654cb9c89687388063bd42b Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sat, 21 Jul 2007 17:11:18 +0200
Subject: x86_64: use the global PIT lock

Replace the pcspkr private PIT lock by the global PIT lock to serialize the
PIT access all over the place.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 include/asm-x86_64/i8253.h | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 include/asm-x86_64/i8253.h

(limited to 'include')

diff --git a/include/asm-x86_64/i8253.h b/include/asm-x86_64/i8253.h
new file mode 100644
index 000000000000..015d8df07690
--- /dev/null
+++ b/include/asm-x86_64/i8253.h
@@ -0,0 +1,6 @@
+#ifndef __ASM_I8253_H__
+#define __ASM_I8253_H__
+
+extern spinlock_t i8253_lock;
+
+#endif	/* __ASM_I8253_H__ */
-- 
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