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From: "Jernej Škrabec" <jernej.skrabec@gmail.com>
To: linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-sunxi@lists.linux.dev,
	Marco Crivellari <marco.crivellari@suse.com>
Cc: Tejun Heo <tj@kernel.org>, Lai Jiangshan <jiangshanlai@gmail.com>,
	Frederic Weisbecker <frederic@kernel.org>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	Marco Crivellari <marco.crivellari@suse.com>,
	Michal Hocko <mhocko@suse.com>, Vinod Koul <vkoul@kernel.org>,
	Kishon Vijay Abraham I <kishon@kernel.org>,
	Chen-Yu Tsai <wens@csie.org>,
	Samuel Holland <samuel@sholland.org>
Subject: Re: [PATCH] phy: sun4i-usb: replace use of system_wq with system_percpu_wq
Date: Wed, 05 Nov 2025 17:44:22 +0100	[thread overview]
Message-ID: <12772271.O9o76ZdvQC@jernej-laptop> (raw)
In-Reply-To: <20251105152023.259813-1-marco.crivellari@suse.com>

Dne sreda, 5. november 2025 ob 16:20:23 Srednjeevropski standardni čas je Marco Crivellari napisal(a):
> Currently if a user enqueues a work item using schedule_delayed_work() the
> used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
> WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
> schedule_work() that is using system_wq and queue_work(), that makes use
> again of WORK_CPU_UNBOUND.
> 
> This lack of consistency cannot be addressed without refactoring the API.
> 
> This patch continues the effort to refactor worqueue APIs, which has begun
> with the change 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")
> 
> Replace system_wq with system_percpu_wq, keeping the same behavior.
> The old wq (system_wq) will be kept for a few release cycles.
> 
> Suggested-by: Tejun Heo <tj@kernel.org>
> Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>

Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>

Best regards,
Jernej




  reply	other threads:[~2025-11-05 16:44 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-05 15:20 [PATCH] phy: sun4i-usb: replace use of system_wq with system_percpu_wq Marco Crivellari
2025-11-05 16:44 ` Jernej Škrabec [this message]
2026-01-13  9:07 ` Marco Crivellari
2026-01-14 14:01 ` Vinod Koul
2026-01-14 14:15   ` Marco Crivellari

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