Re: [RFC workqueue/driver-core PATCH 1/5] workqueue: Provide queue_work_near to queue work near a given NUMA node

Tejun Heo
2018-09-26T22:10:03Z

Hello,

On Wed, Sep 26, 2018 at 03:05:17PM -0700, Alexander Duyck wrote:
> I am using unbound workqueues. However there isn't an interface that
> exposes the NUMA bits of them directly. All I am doing with this
> patch is adding "queue_work_near" which takes a NUMA node as an
> argument and then copies the logic of "queue_work_on" with the
> exception that I am doing a check to verify that there is an
> intersection between wq_unbound_cpumask and the cpumask of the node,
> and then passing a CPU from that intersection into "__queue_work".

Can it just take a cpu id and not feed that to __queue_work()? That
looks like a lot of extra logic.

Thanks.

--
tejun