Re: [PATCH 11/15] stackdepot: use read/write lock

[Andrey Konovalov]

On Tue, Jan 2, 2024 at 1:59 PM Marco Elver <elver@xxxxxxxxxx> wrote:
>
> > I started looking into using percpu-rwsem, but it appears that it
> > doesn't have the irqsave/irqrestore API flavor. I suspect that it
> > shouldn't be hard to add it, but I'd rather not pursue this as a part
> > of this series.
> >
> > So I still propose to keep the rwlock for now, and switch to
> > percpu-rwsem later together with the other perf changes.
>
> I may have gotten lost in the post-vacation email avalanche and missed
> it: did you already send the percpu-rwsem optimization? I am a little
> worried about the contention the plain rwlock introduces on big
> machines.

I didn't get to working on that part unfortunately :(

I filed https://bugzilla.kernel.org/show_bug.cgi?id=218312 for this.