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[PATCH] i386: add alternative-asm.h to allow LOCK_PREFIX replacement in .S files
author
Andi Kleen
<ak@suse.de>
Tue, 26 Sep 2006 08:52:29 +0000
(10:52 +0200)
committer
Andi Kleen
<andi@basil.nowhere.org>
Tue, 26 Sep 2006 08:52:29 +0000
(10:52 +0200)
LOCK_PREFIX is replaced by nops on UP systems, so it has to be a special
macro. Previously this was only possible from C. Allow it for pure
assembly files too. Similar to earlier x86-64 patch.
Signed-off-by: Andi Kleen <ak@suse.de>
include/asm-i386/alternative-asm.i
[new file with mode: 0644]
patch
|
blob
diff --git a/include/asm-i386/alternative-asm.i
b/include/asm-i386/alternative-asm.i
new file mode 100644
(file)
index 0000000..
6c47e3b
--- /dev/null
+++ b/
include/asm-i386/alternative-asm.i
@@ -0,0
+1,14
@@
+#include <linux/config.h>
+
+#ifdef CONFIG_SMP
+ .macro LOCK_PREFIX
+1: lock
+ .section .smp_locks,"a"
+ .align 4
+ .long 1b
+ .previous
+ .endm
+#else
+ .macro LOCK_PREFIX
+ .endm
+#endif