From: Andi Kleen <ak@suse.de>
Date: Tue, 26 Sep 2006 08:52:28 +0000 (+0200)
Subject: [PATCH] Support patchable lock prefix for pure assembly files
X-Git-Tag: firefly_0821_release~33451^2~189
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b4062b16094038334d9bbadac0397a3fc9e981b0;p=firefly-linux-kernel-4.4.55.git

[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
index 000000000000..e4041f4fa4dc
--- /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