[PATCH v3] nptl: Optimize trylock for high cache contention workloads (BZ #33704)

[Andreas K. Huettel]

Am Donnerstag, 18. Dezember 2025, 19:02:11 Mitteleuropäische Normalzeit schrieb Sunil Pandey via Libc-stable:
> On Thu, Dec 18, 2025 at 5:01 AM Wilco Dijkstra <Wilco.Dijkstra@arm.com>
> wrote:
> 
> > Hi Sunil,
> >
> > > Check lock availability before acquisition to reduce cache line
> > > bouncing.  Significantly improves trylock throughput on multi-core
> > > systems under heavy contention.
> >
> > LGTM.
> >
> > Reviewed-by: Wilco Dijkstra  <Wilco.Dijkstra@arm.com>
> >
> > Cheers,
> > Wilco
> >

[...]

> 
> I would like to backport this patch to release branches.
> Any comments or objections?
> 
> --Sunil
> 

No objections, just that it would probably make sense to have it
simmer in master for a while before pushing it to the stable branches.

-- 
Andreas K. Hüttel
dilfridge@gentoo.org
Gentoo Linux developer
(council, toolchain, base-system, perl, libreoffice)
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