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

From "Rafael J. Wysocki" <rjw@rjwysocki.net>
Newsgroups linux.kernel
Subject Re: [PATCH] ACPI : Update platform device numa node based on _PXM method
Date 2017-03-29 00:30 +0200
Message-ID <tq7MJ-5VB-11@gated-at.bofh.it> (permalink)
References <tntA6-4ZS-31@gated-at.bofh.it> <tq7jI-5r1-9@gated-at.bofh.it> <tq7D4-5Qj-17@gated-at.bofh.it>
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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

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Re: [PATCH] ACPI : Update platform device numa node based on _PXM method "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2017-03-29 00:00 +0200
  Re: [PATCH] ACPI : Update platform device numa node based on _PXM  method Shanker Donthineni <shankerd@codeaurora.org> - 2017-03-29 00:20 +0200
    Re: [PATCH] ACPI : Update platform device numa node based on _PXM method "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2017-03-29 00:30 +0200
      Re: [PATCH] ACPI : Update platform device numa node based on _PXM  method Shanker Donthineni <shankerd@codeaurora.org> - 2017-03-29 01:00 +0200
        Re: [PATCH] ACPI : Update platform device numa node based on _PXM method "Rafael J. Wysocki" <rafael@kernel.org> - 2017-03-29 12:30 +0200

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