12:devices:/system.slice/system-serial\x2dgetty.slice
11:blkio:/system.slice/system-serial\x2dgetty.slice
10:cpu,cpuacct:/system.slice/system-serial\x2dgetty.slice
9:rdma:/
8:cpuset:/
7:freezer:/
6:perf_event:/
5:memory:/system.slice/system-serial\x2dgetty.slice
4:net_cls,net_prio:/
3:hugetlb:/
2:pids:/system.slice/system-serial\x2dgetty.slice/serial-getty@ttyS0.service
1:name=systemd:/system.slice/system-serial\x2dgetty.slice/serial-getty@ttyS0.service
0::/system.slice/system-serial\x2dgetty.slice/serial-getty@ttyS0.service