Re: [PATCH] ACPI : Update platform device numa node based on _PXM method

["Rafael J. Wysocki" <rjw@rjwysocki.net>]

On Tuesday, March 28, 2017 05:14:13 PM Shanker Donthineni wrote:
> Hi Rafael,
> 
> 
> On 03/28/2017 04:43 PM, Rafael J. Wysocki wrote:
> > On Tuesday, March 21, 2017 09:54:30 AM Shanker Donthineni wrote:
> >> The optional _PXM method evaluates to an integer that identifies the
> >> proximity domain of a device object. This patch implements support for
> >> ACPI _PXM method and updates the platform device numa node id using
> >> acpi_get_node(), which provides the PXM to NUMA mapping information.
> >>
> >> Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org>
> > What exactly is the motivation here?
> 
> We have a couple of platform devices some of them are attached
> to socket0 and others to a different socket. We would like to covert
> memory allocations in Qualcomm platform device drivers to a NUMA
> aware allocation to improve performance.

All of the above information should be there in the patch changelog and
presumably the patch should be a part of a larger series so the way this
feature is going to be used is more clear.

Thanks,
Rafael