Fix: dma-fence.h appears in Linux 4.10, not 4.9

[lttng-modules.git] / src / probes / Kbuild

diff --git a/src/probes/Kbuild b/src/probes/Kbuild
index 3e556b8e1d72c7225e768baac8ee06930e27f62b..aa268607eb5a4fe6ad08e2135f03440bbb19977b 100644 (file)
--- a/src/probes/Kbuild
+++ b/src/probes/Kbuild
@@ -9,7 +9,24 @@ ccflags-y += -I$(TOP_LTTNG_MODULES_DIR)/include
 obj-$(CONFIG_LTTNG) += lttng-probe-sched.o
 obj-$(CONFIG_LTTNG) += lttng-probe-irq.o
 obj-$(CONFIG_LTTNG) += lttng-probe-timer.o
-obj-$(CONFIG_LTTNG) += lttng-probe-kmem.o
+
+# A dependency on internal header 'mm/slab.h' was introduced in v6.0
+kmem_dep = $(srctree)/mm/slab.h
+kmem_dep_wildcard = $(wildcard $(kmem_dep))
+kmem_dep_check = $(shell \
+if [ \( $(VERSION) -ge 7 \
+   -o \( $(VERSION) -eq 6 -a $(PATCHLEVEL) -ge 0 \) \) -a \
+   -z "$(kmem_dep_wildcard)" ] ; then \
+  echo "warn" ; \
+else \
+  echo "ok" ; \
+fi ;)
+ifeq ($(kmem_dep_check),ok)
+  obj-$(CONFIG_LTTNG) += lttng-probe-kmem.o
+else
+  $(warning File $(kmem_dep) not found. Probe "kmem" is disabled. Use full kernel source tree to enable it.)
+endif
+
 obj-$(CONFIG_LTTNG) += lttng-probe-module.o
 obj-$(CONFIG_LTTNG) += lttng-probe-power.o
 obj-$(CONFIG_LTTNG) += lttng-probe-statedump.o
@@ -80,6 +97,13 @@ endif # CONFIG_X86
 
 obj-$(CONFIG_LTTNG) += lttng-probe-signal.o
 
+ifneq ($(CONFIG_DMA_SHARED_BUFFER),)
+  obj-$(CONFIG_LTTNG) += $(shell \
+    if [ $(VERSION) -ge 5 \
+       -o \( $(VERSION) -eq 4 -a $(PATCHLEVEL) -ge 10 \) ] ; then \
+      echo "lttng-probe-dma-fence.o" ; fi;)
+endif # CONFIG_DMA_SHARED_BUFFER
+
 ifneq ($(CONFIG_BLOCK),)
   # need blk_cmd_buf_len
   ifneq ($(CONFIG_EVENT_TRACING),)