Fix: notification capture: handle userspace strings

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

diff --git a/src/probes/Kbuild b/src/probes/Kbuild
index e26b4359e7638c010e73b6ffd6ea49da78b478df..aa002534ab5424e59318f8c6b86715f935a807e6 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
@@ -167,7 +184,24 @@ ifneq ($(CONFIG_BTRFS_FS),)
   endif # $(wildcard $(btrfs_dep))
 endif # CONFIG_BTRFS_FS
 
-obj-$(CONFIG_LTTNG) += lttng-probe-compaction.o
+ifneq ($(CONFIG_COMPACTION),)
+  # A dependency on internal header 'mm/internal.h' was introduced in v5.18
+  compaction_dep = $(srctree)/mm/internal.h
+  compaction_dep_wildcard = $(wildcard $(compaction_dep))
+  compaction_dep_check = $(shell \
+  if [ \( $(VERSION) -ge 6 \
+     -o \( $(VERSION) -eq 5 -a $(PATCHLEVEL) -ge 18 \) \) -a \
+     -z "$(compaction_dep_wildcard)" ] ; then \
+    echo "warn" ; \
+  else \
+    echo "ok" ; \
+  fi ;)
+  ifeq ($(compaction_dep_check),ok)
+    obj-$(CONFIG_LTTNG) += lttng-probe-compaction.o
+  else
+    $(warning Files $(compaction_dep) not found. Probe "compaction" is disabled. Use full kernel source tree to enable it.)
+  endif # $(wildcard $(compaction_dep))
+endif # CONFIG_COMPACTION
 
 ifneq ($(CONFIG_EXT4_FS),)
   ext4_dep = $(srctree)/fs/ext4/*.h
@@ -187,13 +221,11 @@ ifneq ($(CONFIG_FRAME_WARN),0)
   CFLAGS_lttng-probe-printk.o += -Wframe-larger-than=2200
 endif
 
-obj-$(CONFIG_LTTNG) +=  $(shell \
-    if [ $(VERSION) -ge 4 \
-      -o \( $(VERSION) -eq 3 -a $(PATCHLEVEL) -ge 6 \) \
-      -o \( $(VERSION) -eq 3 -a $(PATCHLEVEL) -eq 5 -a $(SUBLEVEL) -ge 2 \) \
-      -o \( $(VERSION) -eq 3 -a $(PATCHLEVEL) -eq 4 -a $(SUBLEVEL) -ge 9 \) \
-      -o \( $(VERSION) -eq 3 -a $(PATCHLEVEL) -eq 0 -a $(SUBLEVEL) -ge 41 \) ] ; then \
-      echo "lttng-probe-random.o" ; fi;)
+# Introduced in v3.6, remove in v5.18
+random_dep = $(srctree)/include/trace/events/random.h
+ifneq ($(wildcard $(random_dep)),)
+  obj-$(CONFIG_LTTNG) += lttng-probe-random.o
+endif
 
 obj-$(CONFIG_LTTNG) +=  $(shell \
   if [ $(VERSION) -ge 4 \