linux-kernel - Re: [RFT][PATCH v4 0/2] PM: sleep: Handle async suppliers like parents and async consumers like children

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Message-ID: <CAJZ5v0iJ65xxuHtJrWp1sC76FUzPHNpXB+xtHB=e4qTRSgAC4w@mail.gmail.com>
Date: Fri, 27 Jun 2025 12:40:32 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Mario Limonciello <mario.limonciello@....com>
Cc: Ulf Hansson <ulf.hansson@...aro.org>, "Rafael J. Wysocki" <rjw@...ysocki.net>, 
	Linux PM <linux-pm@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, 
	Chris Bainbridge <chris.bainbridge@...il.com>, Saravana Kannan <saravanak@...gle.com>, 
	Sudeep Holla <sudeep.holla@....com>
Subject: Re: [RFT][PATCH v4 0/2] PM: sleep: Handle async suppliers like
 parents and async consumers like children

On Fri, Jun 27, 2025 at 12:28 AM Mario Limonciello
<mario.limonciello@....com> wrote:
>
> On 6/26/2025 4:46 AM, Ulf Hansson wrote:
> > On Mon, 23 Jun 2025 at 14:55, Rafael J. Wysocki <rjw@...ysocki.net> wrote:
> >>
> >> Hi Everyone,
> >>
> >> These two patches complement the recently made PM core changes related to
> >> the async suspend and resume of devices.  They should apply on top of
> >> 6.16-rc3.
> >>
> >> They were sent along with the other changes mentioned above:
> >>
> >> https://lore.kernel.org/linux-pm/2229735.Mh6RI2rZIc@rjwysocki.net/
> >> https://lore.kernel.org/linux-pm/2651185.Lt9SDvczpP@rjwysocki.net/
> >>
> >> (and this is v4 because they have been rebased in the meantime), but they don't
> >> make any difference on my test-bed x86 systems, so I'd appreciate a confirmation
> >> that they are actually needed on ARM (or another architecture using DT).
> >>
> >> Thanks!
> >
> > Hi Rafael,
> >
> > I haven't yet got the time to test these, but the code looks good to
> > me, so feel free to add for the series:
> >
> > Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>
> >
> > Kind regards
> > Uffe
>
> I passed this series to some internal guys to test on a wide variety of
> AMD x86 hardware.  The initial testing looks good.
> Will keep you apprised if anything pops up.

Thanks!

It would also help if you could check whether or not there is any
measurable performance (that is, system suspend and resume time)
difference between "before" and "after".