Re: rt-test not available for arm in buildroot

Re: rt-test not available for arm in buildroot

[John Kacur]

On Fri, 9 Apr 2021, Henri Roosen wrote:

> Hi John,
> I was using buildroot for creating the rootfs for armv7 based systems. Previously I was able to select and include the rt-tests, however, the current buildroot-lts (2021.02.x) doesn't
> allow this anymore.
> 
> Buildroot doesn't build any NUMA stuff for arm. The rt-tests build seems to require NUMA, even though not needed for arm.
> 
> What is your suggestion / strategy to fix rt-test build without any NUMA stuff available at compile time?
> 
> Thanks,
> Henri
> 
> 

Previously numalibs (numactl-devel) was required at build time but
it was not required at runtime for the kind of situation you were describing.

There were some patches that were recently integrated that made the 
assumption that numa libs were always available. The patches had some
nice clean-ups of the numalib calls but unfortunately deleted
the equivalent routines for when numa was not available.

I tried to revert the minimum number of patches possible to go back
to the old situation, but some more work is needed to put back this old 
functionality.

I am aware of this siutation and am working on it. If you want to take a 
look at the old code before these changes and help with some patches
to fix this, that would be appreciated.

If you decide to look at this, I don't just want the old versions
of the functions, placed in the new location, but would like to retain
the improvements in the numa code as well.

Thanks

John