Re: [PATCH v2 0/6] lib: Extend bitmap find binary operations

[Mathieu Desnoyers]

On 2024-08-30 17:56, Yury Norov wrote:
> On Thu, Aug 29, 2024 at 09:59:20AM -0400, Mathieu Desnoyers wrote:
> > Extend bitmap find.h and cpumask.h with additional binary operations
> > such as "nor".
> >
> > Also extend the testing and benchmark coverage of those bitmap find with
> > binary operations.
> >
> > This is useful for NUMA-aware rseq concurrency IDs which depend on this
> > series.
>   
> Hi Mathieu,
>
> Thanks for the series! I appreciate your time nailing it down, and
> especially the tests provided. A couple nits is that we don't need
> an 'extern' specifier,  and would better avoid local statics, even
> in tests.

OK. I've mostly followed the style present in the files I modified.
I'm OK if you change that in place.

> I'll fix that inplace and apply in bitmap-for-next. Can you share
> a link for your work that requires the new API? I need to point it
> when sending a merge request.

Here is the latest version posted, before I split the bitmap patches
into a serparate series:

https://lore.kernel.org/lkml/20240823185946.418340-1-mathieu.desnoyers@xxxxxxxxxxxx/

Please note that I am currently doing additional tests/benchmarks/schedstat
instrumentation and bug fixes on the RSEQ numa-aware patch.

Thanks,

Mathieu

> Thanks,
> Yury
>   
> > Mathieu Desnoyers (6):
> >    lib: Clarify comment on top of find_next_andnot_bit
> >    lib: Implement find_{first,next,nth}_nor_bit, for_each_nor_bit,
> >      find_first_andnot_bit
> >    lib: test bitmap sets binary operation iterators
> >    lib: Fix test_find_first_and_bit and test_find_next_and_bit benchmark
> >    lib: benchmark bitmap sets binary operation find
> >    cpumask: Implement cpumask_{first,next}_{nor,andnot}
> >
> >   include/linux/cpumask.h  |  60 +++++++++++++++++++
> >   include/linux/find.h     | 124 +++++++++++++++++++++++++++++++++++++--
> >   lib/find_bit.c           |  36 ++++++++++++
> >   lib/find_bit_benchmark.c | 103 ++++++++++++++++++++++++++++++--
> >   lib/test_bitmap.c        |  81 +++++++++++++++++++++++++
> >   5 files changed, 396 insertions(+), 8 deletions(-)
> >
> > --
> > 2.39.2

--
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com