Re: [PATCH] freezer, sched: report the frozen task stat as 'D'

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To: Chen Ridong <chenridong@xxxxxxxxxxxxxxx>
Subject: Re: [PATCH] freezer, sched: report the frozen task stat as 'D'
From: Tejun Heo <tj@xxxxxxxxxx>
Date: Thu, 14 Nov 2024 15:28:16 -1000
Cc: Valentin Schneider <vschneid@xxxxxxxxxx>, mingo@xxxxxxxxxx, peterz@xxxxxxxxxxxxx, juri.lelli@xxxxxxxxxx, vincent.guittot@xxxxxxxxxx, dietmar.eggemann@xxxxxxx, rostedt@xxxxxxxxxxx, bsegall@xxxxxxxxxx, mgorman@xxxxxxx, mkoutny@xxxxxxxx >> Michal Koutný <mkoutny@xxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, wangweiyang2@xxxxxxxxxx, cgroups@xxxxxxxxxxxxxxx
In-reply-to: <2f755161-ec7e-4785-b0ca-ea68c01785a2@huaweicloud.com>
References: <20241111135431.1813729-1-chenridong@huaweicloud.com> <xhsmhv7wrb3sc.mognet@vschneid-thinkpadt14sgen2i.remote.csb> <4f78d752-52ab-493d-8bf5-f12dc4f554c8@huaweicloud.com> <ZzYo19k9ZvkC7V-1@slm.duckdns.org> <2f755161-ec7e-4785-b0ca-ea68c01785a2@huaweicloud.com>

Hello,

On Fri, Nov 15, 2024 at 09:14:32AM +0800, Chen Ridong wrote:
> Hi, Tj, There is no ambiguity what cgroup v2 shows. However, in cgroup
> v1, the frozen tasks are reported as 'R'.  Do you think this is reseanable?

Oh, right, pardon my confusion. I thought this was about cgroup2 freezer.
For cgroup1 freezer, yes, D is the closest state for reporting to userspace.

Thanks.

-- 
tejun

References:
- Re: [PATCH] freezer, sched: report the frozen task stat as 'D'
  - From: Chen Ridong
- Re: [PATCH] freezer, sched: report the frozen task stat as 'D'
  - From: Tejun Heo
- Re: [PATCH] freezer, sched: report the frozen task stat as 'D'
  - From: Chen Ridong

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