linux-kernel - Re: [PATCH] media: synopsys: hdmirx: replace use of system_unbound_wq with system_dfl

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Message-ID: <bc8904f1-bc24-4558-861f-5230e0b73181@collabora.com>
Date: Wed, 11 Feb 2026 19:45:07 +0300
From: Dmitry Osipenko <dmitry.osipenko@...labora.com>
To: Marco Crivellari <marco.crivellari@...e.com>
Cc: linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
 kernel@...labora.com, Tejun Heo <tj@...nel.org>,
 Lai Jiangshan <jiangshanlai@...il.com>,
 Frederic Weisbecker <frederic@...nel.org>,
 Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
 Michal Hocko <mhocko@...e.com>, Shreeya Patel <shreeya.patel@...labora.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>
Subject: Re: [PATCH] media: synopsys: hdmirx: replace use of system_unbound_wq
 with system_dfl_wq

On 2/10/26 17:36, Marco Crivellari wrote:
> On Mon, Feb 9, 2026 at 10:18 PM Dmitry Osipenko
> <dmitry.osipenko@...labora.com> wrote:
>> Alright, looking further at the code, apparently there is nothing
>> special RE the two unbound work queues. See some parts of kernel already
>> moved to system_dfl. Would be great is this all was clarified in the
>> commit message.
>>
>> Acked-by: Dmitry Osipenko <dmitry.osipenko@...labora.com>
> 
> Hi,
> 
> If you want I can send a new version with the improved commit log:
> 
> ---
> 
> This patch continues the effort to refactor workqueue APIs, which has begun
> with the changes introducing new workqueues and a new alloc_workqueue flag:
> 
>    commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and system_dfl_wq")
>    commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag")
> 
> The point of the refactoring is to eventually alter the default behavior of
> workqueues to become unbound by default so that their workload placement is
> optimized by the scheduler.
> 
> Before that to happen, workqueue users must be converted to the better named
> new workqueues with no intended behaviour changes:
> 
>    system_wq -> system_percpu_wq
>    system_unbound_wq -> system_dfl_wq
> 
> This way the old obsolete workqueues (system_wq, system_unbound_wq) can be
> removed in the future.
> 
> Link: https://lore.kernel.org/all/20250221112003.1dSuoGyc@linutronix.de/
> 
> ---
> 
> Let me know what's best.

That's better, feel free to send the v2. Thanks!

-- 
Best regards,
Dmitry