[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>
git-mirror · Sep 17, 2005 · 3013449 · 3013449
1 parent 2030c0f
commit 3013449
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Showing 2 changed files with 4 additions and 2 deletions.
diff --git 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
@@ -3,6 +3,4 @@
 
 #include "asm/system-generic.h"
 
-#define __HAVE_ARCH_CMPXCHG 1
-
 #endif
Original file line number	Diff line number	Diff line change
Expand Up		@@ -3,6 +3,4 @@

		#include "asm/system-generic.h"

		#define __HAVE_ARCH_CMPXCHG 1

		#endif