linux-kernel - Re: [PATCH v2 09/10] sched/psi: per-cgroup PSI stats disable/re-enable interface

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Message-ID: <YvKd6dezPM6UxfD/@slm.duckdns.org>
Date:   Tue, 9 Aug 2022 07:48:25 -1000
From:   Tejun Heo <tj@...nel.org>
To:     Chengming Zhou <zhouchengming@...edance.com>
Cc:     hannes@...xchg.org, corbet@....net, surenb@...gle.com,
        mingo@...hat.com, peterz@...radead.org, vincent.guittot@...aro.org,
        dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com,
        cgroups@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, songmuchun@...edance.com
Subject: Re: [PATCH v2 09/10] sched/psi: per-cgroup PSI stats
 disable/re-enable interface

Hello,

On Mon, Aug 08, 2022 at 07:03:40PM +0800, Chengming Zhou wrote:
> So this patch introduce a per-cgroup PSI stats disable/re-enable
> interface "cgroup.psi", which is a read-write single value file that
> allowed values are "0" and "1", the defaults is "1" so per-cgroup
> PSI stats is enabled by default.

Given that the knobs are named {cpu|memory|io}.pressure, I wonder whether
"cgroup.psi" is the best name. Also, it doesn't convey that it's the
enable/disable knob. I think it needs a better name.

Thanks.

-- 
tejun