Re: [PATCH] phy: sun4i-usb: replace use of system_wq with system_percpu_wq
From: Jernej Škrabec
Date: Wed Nov 05 2025 - 11:44:28 EST
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@xxxxxxxxxx>
> Signed-off-by: Marco Crivellari <marco.crivellari@xxxxxxxx>
Reviewed-by: Jernej Skrabec <jernej.skrabec@xxxxxxxxx>
Best regards,
Jernej