linux-kernel - Re: [PATCH 2/2] io_uring/io-wq: limit io poller cpuset to ambient one

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Message-ID: <03b4c259-ab70-4a61-a428-82b0261752b5@kernel.dk>
Date: Tue, 10 Sep 2024 08:55:56 -0600
From: Jens Axboe <axboe@...nel.dk>
To: Felix Moessbauer <felix.moessbauer@...mens.com>
Cc: asml.silence@...il.com, linux-kernel@...r.kernel.org,
 io-uring@...r.kernel.org, cgroups@...r.kernel.org, dqminh@...udflare.com,
 longman@...hat.com, adriaan.schmidt@...mens.com, florian.bezdeka@...mens.com
Subject: Re: [PATCH 2/2] io_uring/io-wq: limit io poller cpuset to ambient one

On 9/10/24 8:33 AM, Felix Moessbauer wrote:
> The io work queue polling threads are userland threads that just never
> exit to the userland. By that, they are also assigned to a cgroup (the
> group of the creating task).
> 
> When creating a new io poller, this poller should inherit the cpu limits
> of the cgroup, as it belongs to the cgroup of the creating task.

Same comment on polling threads and the use of ambient.

-- 
Jens Axboe