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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>,
	<muchun.song@linux.dev>, <kernel@sberdevices.ru>,
	<rockosov@gmail.com>, <cgroups@vger.kernel.org>,
	<linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>,
	<bpf@vger.kernel.org>
Subject: Re: [PATCH v3 0/3] samples: introduce cgroup events listeners
Date: Sat, 25 Nov 2023 11:07:20 +0300	[thread overview]
Message-ID: <20231125080720.h7kbdzumlsi6ltrj@CAB-WSD-L081021> (raw)
In-Reply-To: <20231124200633.scnct5f7auawsjn2@CAB-WSD-L081021>

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


      reply	other threads:[~2023-11-25  8:07 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-23  7:19 Dmitry Rokosov
2023-11-23  7:19 ` [PATCH v3 1/3] samples: introduce new samples subdir for cgroup Dmitry Rokosov
2023-11-23  7:19 ` [PATCH v3 2/3] samples/cgroup: introduce memcg memory.events listener Dmitry Rokosov
2023-11-23  7:19 ` [PATCH v3 3/3] mm: memcg: add reminder comment for the memcg v2 events Dmitry Rokosov
2023-11-24 19:42 ` [PATCH v3 0/3] samples: introduce cgroup events listeners Andrew Morton
2023-11-24 20:06   ` Dmitry Rokosov
2023-11-25  8:07     ` Dmitry Rokosov [this message]

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