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Date:   Sat, 25 Nov 2023 11:07:20 +0300
From:   Dmitry Rokosov <ddrokosov@salutedevices.com>
To:     Andrew Morton <akpm@linux-foundation.org>
CC:     <hannes@cmpxchg.org>, <mhocko@kernel.org>,
        <roman.gushchin@linux.dev>, <shakeelb@google.com>,
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        <bpf@vger.kernel.org>
Subject: Re: [PATCH v3 0/3] samples: introduce cgroup events listeners
Message-ID: <20231125080720.h7kbdzumlsi6ltrj@CAB-WSD-L081021>
References: <20231123071945.25811-1-ddrokosov@salutedevices.com>
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 <20231124200633.scnct5f7auawsjn2@CAB-WSD-L081021>
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Andrew,

On Fri, Nov 24, 2023 at 11:06:33PM +0300, Dmitry Rokosov wrote:
> On Fri, Nov 24, 2023 at 11:42:30AM -0800, Andrew Morton wrote:
> > On Thu, 23 Nov 2023 10:19:42 +0300 Dmitry Rokosov <ddrokosov@salutedevices.com> wrote:
> > 
> > > To begin with, this patch series relocates the cgroup example code to
> > > the samples/cgroup directory, which is the appropriate location for such
> > > code snippets.
> > 
> > butbut.  Didn't we decide to do s/cgroup/memcg/ throughout?
> 
> I believe the samples directory should be named "samples/cgroup" instead
> of "memcg" because the cgroup v1 event listener cannot be renamed to
> "memcg" due to the common naming of cgroup v1 event_control (this sample
> uses that control to access eventfd).
> 
> Additionally, I think it would be a good idea to add the new samples for
> cgroup helpers in that directory.
> 
> That's why I have only renamed the new memcg listener.

I looked into this more deeply. And yes, the old cgroup.event_control
has the common name, but it's used in the memcg implementation only.

So, if we plan to introduce new samples for cgroup, I suggest we use the
following naming convention:

1) Directory: samples/cgroup
2) V1 sample: memcg_v1_event_listener
3) V2 sample: memcg_v2_event_listener

Please let me know what you think about this. If it's okay with you, I
will prepare the v4 version with the above changes. I would appreciate
any feedback on that!"

-- 
Thank you,
Dmitry