create_lttng_session_ok $session_name $OUTPUT_DIR "--shm-path $shm_path"
enable_ust_lttng_channel_ok $session_name $channel_name "--buffers-pid"
create_lttng_session_ok $session_name $OUTPUT_DIR "--shm-path $shm_path"
enable_ust_lttng_channel_ok $session_name $channel_name "--buffers-pid"