On Friday, 19 February 2021, 17:21:21 CET, John Kacur wrote:

On Fri, 19 Feb 2021, Daniel Wagner wrote:

quoted

On Fri, Feb 19, 2021 at 04:21:46PM +0100, Christian Eggers wrote:

quoted

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