Re: [PATCH v2 2/2] sched/topology: Optimize topology_span_sane()

[Andy Shevchenko]

On Wed, Apr 10, 2024 at 04:33:11PM -0500, Kyle Meyer wrote:
> Optimize topology_span_sane() by removing duplicate comparisons.
> 
> Since topology_span_sane() is called inside of for_each_cpu(), each
> pervious CPU has already been compared against every other CPU. The

previous

> current CPU only needs to be compared against higher-numbered CPUs.
> 
> The total number of comparisons is reduced from N * (N - 1) to
> N * (N - 1) / 2 on each non-NUMA scheduling domain level.

Thank you, now it makes sense.

-- 
With Best Regards,
Andy Shevchenko