Re: [PATCH v2 0/2] x86/topology: add bitmap_weight_from() and use it in topo_unit_count()

[Yury Norov]

On Sun, Feb 22, 2026 at 12:49:51PM -0500, Yury Norov wrote:
> Ping?

OK, if no objections, I'm taking it in bitmap-for-next.

Thanks,
Yury
 
> On Mon, Dec 22, 2025 at 02:11:36PM -0500, Yury Norov (NVIDIA) wrote:
> > Currently the function open-codes the missing bitmap_weight_from() with
> > a for-loop, which is known to be less effective. Add the helper and
> > switch topo_unit_count() to using it.
> > 
> > v1: https://lore.kernel.org/all/20251214235437.244125-1-yury.norov@xxxxxxxxx/
> > v2:
> >  - rename 'nbits' to 'end' (Ingo);
> >  - leverage bitmap_weight() in inline implementation;
> >  - drop outline implementation;
> >  - don't handle 'start >= end' case explititly, leave it to user.
> > 
> > Yury Norov (NVIDIA) (2):
> >   bitmap: add bitmap_weight_from()
> >   x86/topology: use bitmap_weight_from()
> > 
> >  arch/x86/kernel/cpu/topology.c |  8 ++------
> >  include/linux/bitmap.h         | 30 ++++++++++++++++++++++++++++++
> >  lib/test_bitmap.c              | 26 ++++++++++++++++++++++++++
> >  3 files changed, 58 insertions(+), 6 deletions(-)
> > 
> > -- 
> > 2.43.0