Commit b701a47b authored Apr 29, 2010 by H. Peter Anvin

x86: Fix LOCK_PREFIX_HERE for uniprocessor build



Checkin b3ac891b:
x86: Add support for lock prefix in alternatives

... did not define LOCK_PREFIX_HERE in the case of a uniprocessor
build.  As a result, it would cause any of the usages of this macro to
fail on a uniprocessor build.  Fix this by defining LOCK_PREFIX_HERE
as a null string.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Luca Barbieri <luca@luca-barbieri.com>
LKML-Reference: <1267005265-27958-2-git-send-email-luca@luca-barbieri.com>

parent a5c9161f

arch/x86/include/asm/alternative.h

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -38,6 +38,7 @@
	#define LOCK_PREFIX LOCK_PREFIX_HERE "\n\tlock; "		#define LOCK_PREFIX LOCK_PREFIX_HERE "\n\tlock; "

	#else /* ! CONFIG_SMP */		#else /* ! CONFIG_SMP */
			#define LOCK_PREFIX_HERE ""
	#define LOCK_PREFIX ""		#define LOCK_PREFIX ""
	#endif		#endif