Re: [PATCH v3 8/8] lib: test for_each_numa_cpus()

[Yury Norov <yury.norov@gmail.com>]

On Sat, Jul 22, 2023 at 08:47:16AM -0700, Guenter Roeck wrote:
> Hi,
> 
> On Sun, Apr 30, 2023 at 10:18:09AM -0700, Yury Norov wrote:
> > Test for_each_numa_cpus() output to ensure that:
> >  - all CPUs are picked from NUMA nodes with non-decreasing distances to the
> >    original node; 
> >  - only online CPUs are enumerated;
> >  - the macro enumerates each online CPUs only once;
> >  - enumeration order is consistent with cpumask_local_spread().
> > 
> > The latter is an implementation-defined behavior. If cpumask_local_spread()
> > or for_each_numa_cpu() will get changed in future, the subtest may need
> > to be adjusted or even removed, as appropriate.
> > 
> > It's useful now because some architectures don't implement numa_distance(),
> > and generic implementation only distinguishes local and remote nodes, which
> > doesn't allow to test the for_each_numa_cpu() properly.
> > 
> 
> This patch results in a crash when testing sparc64 images with qemu.

Thanks Guenter for reporting. I'll remove the series until fixing the
issue.

Thanks,
Yury