[PATCH] uml: UML/i386 cmpxchg fix
Jeff Dike [Sat, 17 Sep 2005 02:28:03 +0000 (19:28 -0700)]
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>

arch/um/Kconfig.i386
include/asm-um/system-i386.h

index 8ad156a..5d92cac 100644 (file)
@@ -42,3 +42,7 @@ config ARCH_HAS_SC_SIGNALS
 config ARCH_REUSE_HOST_VSYSCALL_AREA
        bool
        default y
+
+config X86_CMPXCHG
+       bool
+       default y
index ea8381d..c436263 100644 (file)
@@ -3,6 +3,4 @@
 
 #include "asm/system-generic.h"
     
-#define __HAVE_ARCH_CMPXCHG 1
-
 #endif