Fix: 4.1-rc1 Linux build and regmap instrumentation

[lttng-modules.git] / probes / Makefile

diff --git a/probes/Makefile b/probes/Makefile
index 4d38199e37c1208ac79b23addd49fce2c54755a1..b2dd3af4378383b27ddbd9bd6f1d9a4c9f98f44b 100644 (file)
--- a/probes/Makefile
+++ b/probes/Makefile
@@ -192,10 +192,15 @@ obj-m +=  $(shell \
                echo "lttng-probe-rcu.o" ; fi;)
 
 ifneq ($(CONFIG_REGMAP),)
+regmap_dep = $(srctree)/drivers/base/regmap/trace.h $(srctree)/include/trace/events/regmap.h
+ifneq ($(wildcard $(regmap_dep)),)
 obj-m +=  $(shell \
        if [ $(VERSION) -ge 4 \
                -o \( $(VERSION) -eq 3 -a $(PATCHLEVEL) -ge 2 \) ] ; then \
                echo "lttng-probe-regmap.o" ; fi;)
+else
+$(warning Either of files { $(regmap_dep) } not found. Probe "regmap" is disabled. Use full kernel source tree to enable it.)
+endif
 endif
 
 ifneq ($(CONFIG_PM_RUNTIME),)