From: Jeff Dike <jdike@addtoit.com>
Date: Sat, 17 Sep 2005 02:28:03 +0000 (-0700)
Subject: [PATCH] uml: UML/i386 cmpxchg fix
X-Git-Tag: v2.6.14-rc2~5^2~27
X-Git-Url: http://ftp.safe.ca/?p=safe%2Fjmp%2Flinux-2.6;a=commitdiff_plain;h=3013449243adc3421b507696e5d247a3d292ee0c

[PATCH] uml: UML/i386 cmpxchg fix

Using native cmpxchg offers a slight performance improvement in uml/i386.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/arch/um/Kconfig.i386 b/arch/um/Kconfig.i386
index 8ad156a..5d92cac 100644
--- a/arch/um/Kconfig.i386
+++ b/arch/um/Kconfig.i386
@@ -42,3 +42,7 @@ config ARCH_HAS_SC_SIGNALS
 config ARCH_REUSE_HOST_VSYSCALL_AREA
 	bool
 	default y
+
+config X86_CMPXCHG
+	bool
+	default y
diff --git a/include/asm-um/system-i386.h b/include/asm-um/system-i386.h
index ea8381d..c436263 100644
--- a/include/asm-um/system-i386.h
+++ b/include/asm-um/system-i386.h
@@ -3,6 +3,4 @@
 
 #include "asm/system-generic.h"
     
-#define __HAVE_ARCH_CMPXCHG 1
-
 #endif