ttcn3-bts-test: mount tracingfs only when needed

Change-Id: I59bbbc96c0686a2c8792626297e656df72e578ed
---
M ttcn3-bts-test/jenkins.sh
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/ttcn3-bts-test/jenkins.sh b/ttcn3-bts-test/jenkins.sh
index 8ddf037..6e5cc67 100755
--- a/ttcn3-bts-test/jenkins.sh
+++ b/ttcn3-bts-test/jenkins.sh
@@ -53,7 +53,9 @@
 			echo "https://www.kernel.org/doc/html/latest/trace/ftrace.html#the-file-system"
 			exit 1
 		fi
-		extra_args="--ulimit memlock=-1 --privileged"
+		extra_args="$extra_args --ulimit memlock=-1"
+		extra_args="$extra_args --privileged"
+		extra_args="$extra_args -v /sys/kernel/tracing:/sys/kernel/tracing"
 	fi
 	if [ -z "$variant" ]; then
 		echo ERROR: You have to specify a BTS variant
@@ -64,7 +66,6 @@
 			--cap-add=SYS_ADMIN \
 			--ulimit rtprio=99 \
 			--ulimit core=-1 \
-			-v /sys/kernel/tracing:/sys/kernel/tracing \
 			-v $VOL_BASE_DIR/bts:/data \
 			-v $VOL_BASE_DIR/unix:/data/unix \
 			-e "SLEEP_BEFORE_RESPAWN=$sleep_time_respawn" \

