Here is a list of all documented variables with links to the struct/union documentation for each field:

• delegated : cgroup_systemd_scope_opts
• depth : cgroup_file_info
• enabled : controller_data
• full_path : cgroup_file_info
• hierarchy : controller_data
• mode : cgroup_systemd_scope_opts
• mount : cg_mount_table_s
• name : cg_mount_table_s, cgroup_mount_point, controller_data
• num_cgroups : controller_data
• parent : cgroup_file_info
• path : cgroup_file_info, cgroup_mount_point
• pid : cgroup_systemd_scope_opts
• type : cgroup_file_info