lib/locking-selftest-spin.h - third_party/linux - Git at Google

 #undef LOCK
 #define LOCK		L

 #undef UNLOCK
 #define UNLOCK		U

 #undef RLOCK
 #undef WLOCK

 #undef INIT
 #define INIT		SI
	#undef LOCK
	#define LOCK L

	#undef UNLOCK
	#define UNLOCK U

	#undef RLOCK
	#undef WLOCK

	#undef INIT
	#define INIT SI