Re: [PATCH wq/for-7.4 v2 3/3] workqueue: add a percpu_concurrency_managed workqueue attribute
From: Tejun Heo
Date: Mon Sep 28 2026 - 17:31:18 EST
Hello, Breno.
On Fri, Sep 25, 2026 at 06:09:52AM -0700, Breno Leitao wrote:
> Introduce percpu_concurrency_managed, similar to the discussion in [1],
> and use it when deciding to do concurrency management, instead of
> relying on WQ_PERCPU (the only WQ type that does CM as of now).
Once PERCPU is its own scope, the scope picks the backend, and concurrency
management and the per-cpu max_active follow from that. Opting out of
concurrency management on the per-cpu pools is what WQ_CPU_INTENSIVE already
does, and I don't see a need to change that at runtime. How about dropping
this patch for now?
Thanks.
--
tejun