Re: [rt-tests v2 v2 01/20] cyclictest: Always use libnuma

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On Friday, 19 February 2021, 17:21:21 CET, John Kacur wrote:
> 
> On Fri, 19 Feb 2021, Daniel Wagner wrote:
> 
> > On Fri, Feb 19, 2021 at 04:21:46PM +0100, Christian Eggers wrote:
> > > CONFIG_NUMA is not available on ARM32:
> > 
> > libnuma is not happy if the kernel doesn't have the config
> > option. Well, in this case we just revert the patch I suppose.
> > 
> 
> Yeah, I'm not happy with this.
> To be sure Daniel did a lot of good work cleaning-up some of the numa 
> calls and cleaning up the somewhat artificial smp / numa divide.
> 
> That work needs to continue, but I want the ability to build cyclictest
> without NUMA, and that also means we need the small helpers.

Just for clarification: Does this mean that cyclictest shall link against
libnuma (libnuma can be built on ARM without problems), but not call it
functions at runtime?

>From the numa.h:

/* NUMA support available. If this returns a negative value all other function
   in this library are undefined. */
int numa_available(void);

regards,
Christian






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