[PATCH] Support patchable lock prefix for pure assembly files

Signed-off-by: Andi Kleen <ak@suse.de>

diff --git a/include/asm-x86_64/alternative-asm.i b/include/asm-x86_64/alternative-asm.i
new file mode 100644 (file)
index 0000000..e4041f4
--- /dev/null
+++ b/include/asm-x86_64/alternative-asm.i
@@ -0,0 +1,14 @@
+#include <linux/config.h>
+
+#ifdef CONFIG_SMP
+       .macro LOCK_PREFIX
+1:     lock
+       .section .smp_locks,"a"
+       .align 8
+       .quad 1b
+       .previous
+       .endm
+#else
+       .macro LOCK_PREFIX
+       .endm
+#endif