Re: [RFC PATCH bpf-next v2 2/9] cgroup: Eliminate the need for cgroup_mutex in proc_cgroup_show()

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To: Tejun Heo <tj@xxxxxxxxxx>
Subject: Re: [RFC PATCH bpf-next v2 2/9] cgroup: Eliminate the need for cgroup_mutex in proc_cgroup_show()
From: Yafang Shao <laoar.shao@xxxxxxxxx>
Date: Thu, 19 Oct 2023 14:39:44 +0800
Cc: ast@xxxxxxxxxx, daniel@xxxxxxxxxxxxx, john.fastabend@xxxxxxxxx, andrii@xxxxxxxxxx, martin.lau@xxxxxxxxx, song@xxxxxxxxxx, yonghong.song@xxxxxxxxx, kpsingh@xxxxxxxxxx, sdf@xxxxxxxxxx, haoluo@xxxxxxxxxx, jolsa@xxxxxxxxxx, lizefan.x@xxxxxxxxxxxxx, hannes@xxxxxxxxxxx, yosryahmed@xxxxxxxxxx, mkoutny@xxxxxxxx, sinquersw@xxxxxxxxx, cgroups@xxxxxxxxxxxxxxx, bpf@xxxxxxxxxxxxxxx
In-reply-to: <ZS-nrsIMFUia8uPI@slm.duckdns.org>
References: <20231017124546.24608-1-laoar.shao@gmail.com> <20231017124546.24608-3-laoar.shao@gmail.com> <ZS-nrsIMFUia8uPI@slm.duckdns.org>

On Wed, Oct 18, 2023 at 5:38 PM Tejun Heo <tj@xxxxxxxxxx> wrote:
>
> On Tue, Oct 17, 2023 at 12:45:39PM +0000, Yafang Shao wrote:
> > Results in output like:
> >
> >   7995:name=cgrp2: (deleted)
> >   8594:name=cgrp1: (deleted)
>
> Just skip them? What would userspace do with the above information?

It should be useless to userspace.
will skip it.

-- 
Regards
Yafang

References:
- [RFC PATCH bpf-next v2 0/9] bpf, cgroup: Add BPF support for cgroup1 hierarchy
  - From: Yafang Shao
- [RFC PATCH bpf-next v2 2/9] cgroup: Eliminate the need for cgroup_mutex in proc_cgroup_show()
  - From: Yafang Shao
- Re: [RFC PATCH bpf-next v2 2/9] cgroup: Eliminate the need for cgroup_mutex in proc_cgroup_show()
  - From: Tejun Heo

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