[RFC] [PATCH bpf-next 1/1] bpf: Add a BPF helper for getting the cgroup path of current task

[KP Singh]

> > About your suggestion, the *cgroup_id helpers only works for cgroup v2,
> > however, we're still using cgroup v1 in product，and even for cgroup v2,
> > I'm not sure if there is any way for user space to get this cgroup id
> > timely(after container created, but before container start to run)。
> >
> > So if there is any effective way works for cgroup v1?
>
> https://github.com/systemd/systemd/blob/main/NEWS#L379

I agree that we should not focus on cgroup v1 if we do add a helper.