--KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,)
-+KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) $(EXTRA_OPTIMIZATION)
+ KBUILD_CFLAGS += $(call cc-option,-Oz,-Os)
+-KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,)
++KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,) $(EXTRA_OPTIMIZATION)