[PATCH] irqchip: gicv3-its: Use NUMA aware memory allocation for ITS tables

Marc Zyngier marc.zyngier at arm.com
Fri Jun 30 01:51:40 PDT 2017

On 30/06/17 04:01, Ganapatrao Kulkarni wrote:
> On Fri, Jun 30, 2017 at 8:04 AM, Ganapatrao Kulkarni
> <gpkulkarni at gmail.com> wrote:
>> Hi Shanker,
>> On Sun, Jun 25, 2017 at 9:16 PM, Shanker Donthineni
>> <shankerd at codeaurora.org> wrote:
>>> The NUMA node information is visible to ITS driver but not being used
>>> other than handling errata. This patch allocates the memory for ITS
>>> tables from the corresponding NUMA node using the appropriate NUMA
>>> aware functions.
> IMHO, the description would have been more constructive?
> "All ITS tables are mapped by default to NODE 0 memory.
> Adding changes to allocate memory from respective NUMA NODES of ITS devices.
> This will optimize tables access and avoids unnecessary inter-node traffic."

But more importantly, I'd like to see figures showing the actual benefit
of this per-node allocation. Given that both of you guys have access to
such platforms, please show me the numbers!


Jazz is not dead. It just smells funny...

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