Re: [PATCH V3 3/4] pmdomain: core: Fix debugfs node creation failure

From: Dmitry Baryshkov
Date: Thu Oct 10 2024 - 08:47:35 EST


On Wed, Oct 09, 2024 at 01:11:14PM GMT, Ulf Hansson wrote:
> On Mon, 7 Oct 2024 at 19:33, Dmitry Baryshkov
> <dmitry.baryshkov@xxxxxxxxxx> wrote:
> >
> > On Mon, Oct 07, 2024 at 11:36:41AM GMT, Sibi Sankar wrote:
> > > The domain attributes returned by the perf protocol can end up
> > > reporting identical names across domains, resulting in debugfs
> > > node creation failure. Fix this failure by ensuring that pm domains
> > > get a unique name using ida in pm_genpd_init.
>
> Thanks for working on this!
>
> >
> > Can we make this opt-in or opt-out? Seeing numeric suffixes next to
> > well-known power domain names (e.g. those comin from RPMh or the CPU
> > domains) is a bit strange. Or maybe you can limit the IDA suffix just to
> > the SCMI / perf domains?
>
> I was also thinking something along the lines of this.
>
> Another thing on top of what Dmitry suggests, could be to iterate
> through the &gpd_list and compare the existing genpd->names with the
> one that we are adding in pm_genpd_init(). In this way, we don't need
> to add the IDA to more than those that really need it.
>
> What do you think?

I have no strong preference. Your proposal sounds good to me too.

>
> [...]
>
> Kind regards
> Uffe

--
With best wishes
Dmitry