[dpdk-dev] [PATCH] eal: use get_mempolicy(2) to find numa socket on Linux

[Sergio Gonzalez Monroy]

On 01/07/2017 15:18, Thomas Monjalon wrote:
> 21/06/2017 17:49, Sergio Gonzalez Monroy:
>> I think following the discussion of libnuma dependency in another thread
>> [1], you would need to implement a similar approach and keep the old
>> method while providing this alternative if libnuma is present.
> Considering that libnuma becomes mandatory to build DPDK on NUMA-capable
> systems, we can assume there is only one CPU socket if libnuma is
> unavailable.
>
>> As Ilya mentions in the thread, this is usually the job of tools such as
>> autotools, cmake or meson but given that we do not have such tools in
>> DPDK yet, we rely in a build time config option for libnuma.
>>
>> Given that we already have a libnuma config option for VHOST, we might
>> be adding anew one for hugepage balancing, I think it would make sense
>> to just have single CONFIG_RTE_LIBNUMA option instead.
>>
>> Thoughts?
> I am not sure about merging every NUMA options into one.
> It may be interesting to track different NUMA features requiring libnuma.

Do you see the case where a system with libnuma we want to use the 
support for hugapage allocation but not for vhost?
In my opinion this looks like a manual check for libnuma where with a 
different build system would have been automated.

Cheers,
Sergio

> Anyway, this patch needs to be rebased now that Ilya's patch is applied.