Re: [PATCH v9 0/7] Make cpuid <-> nodeid mapping persistent

Tejun Heo
2016-07-26T01:03:44Z

Hello,

On Mon, Jul 25, 2016 at 05:25:49PM -0700, Andrew Morton wrote:
> > Yeah, that was one of the early approaches. The issue isn't limited
> > to wq. Any memory allocation can have similar issues of underlying
> > node association changing and we don't have any synchronization
> > mechanism around it. It doesn't make any sense to make NUMA
> > association dynamic when the consumer surface is vastly larger and
> > there's nothing inherently dynamic about the association itself.
>
> And other architectures?

No idea but it only matters for NUMA + CPU hotplug combination where a
whole node can go empty, which would at most be a few archs.

Thanks.

--
tejun