linux-kernel - Re: [PATCH 1/3] acpi: platform_profile

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Message-ID: <CAJZ5v0ipOL+Z3SVdUZdnW1hJ2cCUb_BxU1fFqkeXiZxazEERpA@mail.gmail.com>
Date: Mon, 3 Nov 2025 16:58:33 +0100
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: "Derek J. Clark" <derekjohn.clark@...il.com>
Cc: Hans de Goede <hdegoede@...hat.com>, Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>, 
	Armin Wolf <W_Armin@....de>, Len Brown <lenb@...nel.org>, 
	"Rafael J . Wysocki" <rafael@...nel.org>, Jonathan Corbet <corbet@....net>, 
	Mario Limonciello <superm1@...nel.org>, Zhixin Zhang <zhangzx36@...ovo.com>, Mia Shao <shaohz1@...ovo.com>, 
	Mark Pearson <mpearson-lenovo@...ebb.ca>, 
	"Pierre-Loup A . Griffais" <pgriffais@...vesoftware.com>, Kurt Borja <kuurtb@...il.com>, 
	platform-driver-x86@...r.kernel.org, linux-doc@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [PATCH 1/3] acpi: platform_profile - Add Extreme profile option

On Sun, Oct 26, 2025 at 9:12 AM Derek J. Clark
<derekjohn.clark@...il.com> wrote:
>
> Some devices, namely Lenovo Legion devices, have an "extreme" mode where
> power draw is at the maximum limit of the cooling hardware. Add a new
> "extreme" platform profile to properly reflect this operating mode.
>
> Signed-off-by: Derek J. Clark <derekjohn.clark@...il.com>

This is fine with me from the ACPI angle, so

Acked-by: Rafael J. Wysocki (Intel) <rafael@...nel.org>

> ---
>  Documentation/ABI/testing/sysfs-class-platform-profile | 2 ++
>  drivers/acpi/platform_profile.c                        | 1 +
>  include/linux/platform_profile.h                       | 1 +
>  3 files changed, 4 insertions(+)
>
> diff --git a/Documentation/ABI/testing/sysfs-class-platform-profile b/Documentation/ABI/testing/sysfs-class-platform-profile
> index dc72adfb830a..9bee8deb4dc9 100644
> --- a/Documentation/ABI/testing/sysfs-class-platform-profile
> +++ b/Documentation/ABI/testing/sysfs-class-platform-profile
> @@ -23,6 +23,8 @@ Description:  This file contains a space-separated list of profiles supported
>                                         power consumption with a slight bias
>                                         towards performance
>                 performance             High performance operation
> +               extreme                 Higher performance operation that may exceed
> +                                       internal battery draw limits when on AC power
>                 custom                  Driver defined custom profile
>                 ====================    ========================================
>
> diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
> index b43f4459a4f6..78da17e16d9b 100644
> --- a/drivers/acpi/platform_profile.c
> +++ b/drivers/acpi/platform_profile.c
> @@ -37,6 +37,7 @@ static const char * const profile_names[] = {
>         [PLATFORM_PROFILE_BALANCED] = "balanced",
>         [PLATFORM_PROFILE_BALANCED_PERFORMANCE] = "balanced-performance",
>         [PLATFORM_PROFILE_PERFORMANCE] = "performance",
> +       [PLATFORM_PROFILE_EXTREME] = "extreme",
>         [PLATFORM_PROFILE_CUSTOM] = "custom",
>  };
>  static_assert(ARRAY_SIZE(profile_names) == PLATFORM_PROFILE_LAST);
> diff --git a/include/linux/platform_profile.h b/include/linux/platform_profile.h
> index a299225ab92e..2bf178bde2b5 100644
> --- a/include/linux/platform_profile.h
> +++ b/include/linux/platform_profile.h
> @@ -24,6 +24,7 @@ enum platform_profile_option {
>         PLATFORM_PROFILE_BALANCED,
>         PLATFORM_PROFILE_BALANCED_PERFORMANCE,
>         PLATFORM_PROFILE_PERFORMANCE,
> +       PLATFORM_PROFILE_EXTREME,
>         PLATFORM_PROFILE_CUSTOM,
>         PLATFORM_PROFILE_LAST, /*must always be last */
>  };
> --
> 2.51.1
>