linux-kernel - Re: [PATCH v4 15/20] ACPI: platform_profile: Add concept of a "custom" profile

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Message-ID: <2e48d12b-e772-4a11-8660-b3153a018443@gmx.de>
Date: Wed, 6 Nov 2024 20:17:44 +0100
From: Armin Wolf <W_Armin@....de>
To: Mario Limonciello <mario.limonciello@....com>,
 Hans de Goede <hdegoede@...hat.com>,
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc: "Rafael J . Wysocki" <rafael@...nel.org>, Len Brown <lenb@...nel.org>,
 Maximilian Luz <luzmaximilian@...il.com>, Lee Chun-Yi <jlee@...e.com>,
 Shyam Sundar S K <Shyam-sundar.S-k@....com>,
 Corentin Chary <corentin.chary@...il.com>, "Luke D . Jones"
 <luke@...nes.dev>, Ike Panhc <ike.pan@...onical.com>,
 Henrique de Moraes Holschuh <hmh@....eng.br>,
 Alexis Belmonte <alexbelm48@...il.com>,
 Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
 Ai Chao <aichao@...inos.cn>, Gergo Koteles <soyer@....hu>,
 open list <linux-kernel@...r.kernel.org>,
 "open list:ACPI" <linux-acpi@...r.kernel.org>,
 "open list:MICROSOFT SURFACE PLATFORM PROFILE DRIVER"
 <platform-driver-x86@...r.kernel.org>,
 "open list:THINKPAD ACPI EXTRAS DRIVER"
 <ibm-acpi-devel@...ts.sourceforge.net>,
 Mark Pearson <mpearson-lenovo@...ebb.ca>,
 Matthew Schwartz <matthew.schwartz@...ux.dev>
Subject: Re: [PATCH v4 15/20] ACPI: platform_profile: Add concept of a
 "custom" profile

Am 05.11.24 um 16:33 schrieb Mario Limonciello:

> When two profile handlers don't agree on the current profile it's ambiguous
> what to show to the legacy sysfs interface.
>
> Add a "custom" profile string that userspace will be able to distinguish
> this situation when using the legacy sysfs interface.

Reviewed-by: Armin Wolf <W_Armin@....de>

> Reviewed-by: Mark Pearson <mpearson-lenovo@...ebb.ca>
> Signed-off-by: Mario Limonciello <mario.limonciello@....com>
> ---
>   drivers/acpi/platform_profile.c  | 1 +
>   include/linux/platform_profile.h | 1 +
>   2 files changed, 2 insertions(+)
>
> diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
> index 8de7c8352673e..d8c2d195106c2 100644
> --- a/drivers/acpi/platform_profile.c
> +++ b/drivers/acpi/platform_profile.c
> @@ -20,6 +20,7 @@ static const char * const profile_names[] = {
>   	[PLATFORM_PROFILE_BALANCED] = "balanced",
>   	[PLATFORM_PROFILE_BALANCED_PERFORMANCE] = "balanced-performance",
>   	[PLATFORM_PROFILE_PERFORMANCE] = "performance",
> +	[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 f81c3afcb7575..d2a2ab4c6cee9 100644
> --- a/include/linux/platform_profile.h
> +++ b/include/linux/platform_profile.h
> @@ -23,6 +23,7 @@ enum platform_profile_option {
>   	PLATFORM_PROFILE_BALANCED,
>   	PLATFORM_PROFILE_BALANCED_PERFORMANCE,
>   	PLATFORM_PROFILE_PERFORMANCE,
> +	PLATFORM_PROFILE_CUSTOM,
>   	PLATFORM_PROFILE_LAST, /*must always be last */
>   };
>