ifneq ($(CONFIG_BLOCK),)
ifneq ($(CONFIG_EVENT_TRACING),) # need blk_cmd_buf_len
-obj-m += lttng-probe-block.o
+obj-m += $(shell \
+ if [ $(VERSION) -ge 3 \
+ -o \( $(VERSION) -eq 2 -a $(PATCHLEVEL) -ge 6 -a $(SUBLEVEL) -ge 38 \) ] ; then \
+ echo "lttng-probe-block.o" ; fi;)
endif
endif