Re: [PATCH] cxl/pci: replace use of system_wq with system_percpu_wq
From: Davidlohr Bueso
Date: Fri Oct 31 2025 - 12:17:12 EST
On Thu, 30 Oct 2025, Marco Crivellari wrote:
Currently if a user enqueue 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.
system_wq should be the per-cpu workqueue, yet in this name nothing makes
that clear, so replace system_wq with system_percpu_wq.
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>
Acked-by: Davidlohr Bueso <dave@xxxxxxxxxxxx>