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

[Yury Norov]

On Thu, Dec 07, 2023 at 01:46:19PM -0800, Andrew Morton wrote:
> 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.

Thanks you!