Re: [PATCHSET v12 sched_ext/for-6.15] sched_ext: split global idle cpumask into per-NUMA cpumasks

[Tejun Heo]

On Fri, Feb 14, 2025 at 08:39:59PM +0100, Andrea Righi wrote:
> = Overview =
> 
> As discussed during the sched_ext office hours, using a global cpumask to
> keep track of the idle CPUs can be inefficient and it may not scale really
> well on large NUMA systems.
> 
> Therefore, split the idle cpumask into multiple per-NUMA node cpumasks to
> improve scalability and performance on such large systems.
> 
> Scalability issues seem to be more noticeable on Intel Sapphire Rapids
> dual-socket architectures.

Applied 1-7 to sched_ext/for-6.15.

Thanks.

-- 
tejun