linux-kernel - Re: [PATCH v3 0/6] lib: Extend bitmap find binary operations

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ZtJPis2WKGgk9hvz@yury-ThinkPad>
Date: Fri, 30 Aug 2024 16:02:34 -0700
From: Yury Norov <yury.norov@...il.com>
To: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc: Rasmus Villemoes <linux@...musvillemoes.dk>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/6] lib: Extend bitmap find binary operations

On Fri, Aug 30, 2024 at 03:10:37PM -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. The series can be found at:
> 
> https://lore.kernel.org/lkml/20240823185946.418340-1-mathieu.desnoyers@efficios.com/
> 

Added in bitmap-for-next for testing.

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 | 143 +++++++++++++++++++++++++++++++++------
>  lib/test_bitmap.c        |  81 ++++++++++++++++++++++
>  5 files changed, 418 insertions(+), 26 deletions(-)
> 
> -- 
> 2.39.2