linux-kernel - Re: [PATCH v6 14/22] ACPI: platform_profile: Notify change events on register and unregister

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Message-ID: <c5df06b5-b827-4978-a3fd-63a0fa052f87@gmx.de>
Date: Sun, 17 Nov 2024 20:21:51 +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 v6 14/22] ACPI: platform_profile: Notify change events on
 register and unregister

Am 09.11.24 um 05:41 schrieb Mario Limonciello:

> As multiple platform profile handlers may come and go, send a notification
> to userspace each time that a platform profile handler is registered or
> unregistered.

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

>
> Tested-by: Mark Pearson <mpearson-lenovo@...ebb.ca>
> Tested-by: Matthew Schwartz <matthew.schwartz@...ux.dev>
> Reviewed-by: Mark Pearson <mpearson-lenovo@...ebb.ca>
> Signed-off-by: Mario Limonciello <mario.limonciello@....com>
> ---
>   drivers/acpi/platform_profile.c | 4 ++++
>   1 file changed, 4 insertions(+)
>
> diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
> index c5487d3928c1b..c4d451782ff18 100644
> --- a/drivers/acpi/platform_profile.c
> +++ b/drivers/acpi/platform_profile.c
> @@ -380,6 +380,8 @@ int platform_profile_register(struct platform_profile_handler *pprof)
>   		goto cleanup_ida;
>   	}
>
> +	sysfs_notify(acpi_kobj, NULL, "platform_profile");
> +
>   	cur_profile = pprof;
>
>   	err = sysfs_update_group(acpi_kobj, &platform_profile_group);
> @@ -408,6 +410,8 @@ int platform_profile_remove(struct platform_profile_handler *pprof)
>   	device_unregister(pprof->class_dev);
>   	ida_free(&platform_profile_ida, id);
>
> +	sysfs_notify(acpi_kobj, NULL, "platform_profile");
> +
>   	cur_profile = NULL;
>
>   	sysfs_update_group(acpi_kobj, &platform_profile_group);