Re: [PATCH v2 0/6] lib/group_cpus: rework grp_spread_init_one() and make it O(1)

[Andrew Morton]

On Thu,  7 Dec 2023 12:38:54 -0800 Yury Norov <yury.norov@xxxxxxxxx> wrote:

> grp_spread_init_one() implementation is sub-optimal because it
> traverses bitmaps from the beginning, instead of picking from the
> previous iteration.
> 
> Fix it and use find_bit API where appropriate. While here, optimize
> cpumasks allocation and drop unneeded cpumask_empty() call.

Thanks.  This isn't my playground, but I'll grab the patches to at
least get them some testing.  Review from those who have worked
on this code would be appreciated.