From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Thu, 23 Apr 2015 21:46:51 +0000 (-0400)
Subject: Fix: disable x86 kvm instrumentation for kernels < 2.6.38
X-Git-Tag: v2.6.1~16
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=98e8cf689cf6a5c3f725ed0d540c10a5e687f00b;p=lttng-modules.git

Fix: disable x86 kvm instrumentation for kernels < 2.6.38

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/probes/Makefile b/probes/Makefile
index ee912240..a228f8a4 100644
--- a/probes/Makefile
+++ b/probes/Makefile
@@ -24,8 +24,14 @@ kvm_dep = $(srctree)/virt/kvm/iodev.h
 ifneq ($(wildcard $(kvm_dep)),)
 CFLAGS_lttng-probe-kvm-x86.o += -I$(srctree)/virt/kvm
 CFLAGS_lttng-probe-kvm-x86-mmu.o += -I$(srctree)/virt/kvm
-obj-m += lttng-probe-kvm-x86.o
-obj-m += lttng-probe-kvm-x86-mmu.o
+obj-m +=  $(shell \
+	if [ $(VERSION) -ge 3 \
+		-o \( $(VERSION) -eq 2 -a $(PATCHLEVEL) -ge 6 -a $(SUBLEVEL) -ge 38 \) ] ; then \
+		echo "lttng-probe-kvm-x86.o" ; fi;)
+obj-m +=  $(shell \
+	if [ $(VERSION) -ge 3 \
+		-o \( $(VERSION) -eq 2 -a $(PATCHLEVEL) -ge 6 -a $(SUBLEVEL) -ge 38 \) ] ; then \
+		echo "lttng-probe-kvm-x86-mmu.o" ; fi;)
 else
 $(warning File $(kvm_dep) not found. Probe "kvm" x86-specific is disabled. Use full kernel source tree to enable it.)
 endif