Re: [RFC PATCH] sched/fair: Refactor can_migrate_task() to elimate looping

[Peter Zijlstra]

On Thu, Jan 09, 2025 at 06:12:22PM +0800, I Hsin Cheng wrote:

> > > Except you cannot put cpumask on-stack...
> 
> Oh I'm sorry, may I ask the reason? is it because cpumask tends to be
> very large?

Yes, when building with NR_CPUS=8192 (as Distos tend to do) it is 1K of
stack space.