linux-kernel - Re: [PATCH-cgroup v7] cgroup: Show # of subsystem CSSes in cgroup.stat

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Message-ID: <ZqpuIgdNLLwyjT9n@slm.duckdns.org>
Date: Wed, 31 Jul 2024 07:02:26 -1000
From: Tejun Heo <tj@...nel.org>
To: Michal Koutný <mkoutny@...e.com>
Cc: Waiman Long <longman@...hat.com>, Zefan Li <lizefan.x@...edance.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Jonathan Corbet <corbet@....net>, cgroups@...r.kernel.org,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	Kamalesh Babulal <kamalesh.babulal@...cle.com>,
	Roman Gushchin <roman.gushchin@...ux.dev>
Subject: Re: [PATCH-cgroup v7] cgroup: Show # of subsystem CSSes in
 cgroup.stat

On Wed, Jul 31, 2024 at 11:41:39AM +0200, Michal Koutný wrote:
...
> I think the commit message is missing something like this:
> 
> | 'debug' controller wasn't used to provide this information because
> | the controller is not recommended in productions kernels, also many of
> | them won't enable CONFIG_CGROUP_DEBUG by default.
> | 
> | Similar information could be retrieved with debuggers like drgn but
> | that's also not always available (e.g. lockdown) and the additional
> | cost of runtime tracking here is deemed marginal.
> 
> or a 'Link:' to the discussion ;-)

I updated the commit message to include the paras and Link to this thread.

Thanks.

-- 
tejun