linux-kernel - Re: [PATCH 0/3] Add support for hidden choices to platform

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Message-ID: <CAJZ5v0jvvfWCoCZxZzGRM01QLLgmL8Xmz8pQa8jHde1Sr1BqRQ@mail.gmail.com>
Date: Tue, 4 Mar 2025 20:59:40 +0100
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>, 
	Mario Limonciello <superm1@...nel.org>
Cc: Shyam Sundar S K <Shyam-sundar.S-k@....com>, "Rafael J . Wysocki" <rafael@...nel.org>, 
	Hans de Goede <hdegoede@...hat.com>, "Luke D . Jones" <luke@...nes.dev>, 
	Mark Pearson <mpearson-lenovo@...ebb.ca>, 
	"open list:AMD PMF DRIVER" <platform-driver-x86@...r.kernel.org>, 
	open list <linux-kernel@...r.kernel.org>, 
	"open list:ACPI" <linux-acpi@...r.kernel.org>, "Derek J . Clark" <derekjohn.clark@...il.com>, 
	Antheas Kapenekakis <lkml@...heas.dev>, me@...egospodneti.ch, 
	Denis Benato <benato.denis96@...il.com>, Mario Limonciello <mario.limonciello@....com>
Subject: Re: [PATCH 0/3] Add support for hidden choices to platform_profile

On Tue, Mar 4, 2025 at 5:22 PM Ilpo Järvinen
<ilpo.jarvinen@...ux.intel.com> wrote:
>
> On Fri, 28 Feb 2025, Mario Limonciello wrote:
>
> > From: Mario Limonciello <mario.limonciello@....com>
> >
> > When two drivers provide platform profile handlers but use different
> > strings to mean (essentially) the same thing the legacy interface won't
> > export them because it only shows profiles common to multiple drivers.
> >
> > This causes an unexpected behavior to people who have upgraded from an
> > earlier kernel because if multiple drivers have bound platform profile
> > handlers they might not be able to access profiles they were expecting.
> >
> > Introduce a concept of a "hidden choice" that drivers can register and
> > the platform profile handler code will utilize when using the legacy
> > interface.
> >
> > There have been some other attempts at solving this issue in other ways.
> > This serves as an alternative to those attempts.
> >
> > Link: https://lore.kernel.org/platform-driver-x86/e64b771e-3255-42ad-9257-5b8fc6c24ac9@gmx.de/T/#t
> > Link: https://lore.kernel.org/platform-driver-x86/CAGwozwF-WVEgiAbWbRCiUaXf=BVa3KqmMJfs06trdMQHpTGmjQ@mail.gmail.com/T/#m2f3929e2d4f73cc0eedd14738170dad45232fd18
> > Cc: Antheas Kapenekakis <lkml@...heas.dev>
> > Cc: "Luke D. Jones" <luke@...nes.dev>
> >
> > Mario Limonciello (3):
> >   ACPI: platform_profile: Add support for hidden choices
> >   platform/x86/amd: pmf: Add 'quiet' to hidden choices
> >   platform/x86/amd: pmf: Add balanced-performance to hidden choices
> >
> >  drivers/acpi/platform_profile.c    | 94 +++++++++++++++++++++++-------
> >  drivers/platform/x86/amd/pmf/sps.c | 11 ++++
> >  include/linux/platform_profile.h   |  3 +
> >  3 files changed, 87 insertions(+), 21 deletions(-)
> >
> >
>
> Acked-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>

All 3 patches applied as 6.14-rc6 material, thanks!