Subsys_name may be different between v1 and v2. In cgroup v2 blk subsys_name is io, while it is named blkio in cgroup v1. It better to distinguish name and legacy_name when we cat /proc/cgroups. Signed-off-by: Chen Ridong <chenridong@xxxxxxxxxx> --- kernel/cgroup/cgroup-v1.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/cgroup/cgroup-v1.c b/kernel/cgroup/cgroup-v1.c index b9dbf6bf2779..b29252ad91b6 100644 --- a/kernel/cgroup/cgroup-v1.c +++ b/kernel/cgroup/cgroup-v1.c @@ -677,7 +677,8 @@ int proc_cgroupstats_show(struct seq_file *m, void *v) for_each_subsys(ss, i) seq_printf(m, "%s\t%d\t%d\t%d\n", - ss->legacy_name, ss->root->hierarchy_id, + ss->root == &cgrp_dfl_root ? ss->name : ss->legacy_name, + ss->root->hierarchy_id, atomic_read(&ss->root->nr_cgrps), cgroup_ssid_enabled(i)); -- 2.34.1
