Re: Question on handling managed IRQs when hotplugging CPUs

Keith Busch
2019-02-05T15:16:36Z

On Tue, Feb 05, 2019 at 04:10:47PM +0100, Hannes Reinecke wrote:
> On 2/5/19 3:52 PM, Keith Busch wrote:
> > Whichever layer dispatched the IO to a CPU specific context should
> > be the one to wait for its completion. That should be blk-mq for most
> > block drivers.
> >
> Indeed.
> But we don't provide any mechanisms for that ATM, right?
>
> Maybe this would be a topic fit for LSF/MM?

Right, there's nothing handling this now, and sounds like it'd be a good
discussion to bring to the storage track.