linux-kernel - Re: [PATCH v6 04/12] platform/x86: hfi: Introduce AMD Hardware Feedback Interface Driver

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Message-ID: <123bd610-03d7-4c08-9314-616c0d3349d2@infradead.org>
Date: Mon, 4 Nov 2024 10:00:21 -0800
From: Randy Dunlap <rdunlap@...radead.org>
To: Mario Limonciello <mario.limonciello@....com>,
 Borislav Petkov <bp@...en8.de>, Hans de Goede <hdegoede@...hat.com>,
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc: x86@...nel.org, "Gautham R . Shenoy" <gautham.shenoy@....com>,
 Perry Yuan <perry.yuan@....com>, linux-kernel@...r.kernel.org,
 linux-doc@...r.kernel.org, linux-pm@...r.kernel.org,
 platform-driver-x86@...r.kernel.org,
 Shyam Sundar S K <Shyam-sundar.S-k@....com>
Subject: Re: [PATCH v6 04/12] platform/x86: hfi: Introduce AMD Hardware
 Feedback Interface Driver

On 11/4/24 9:53 AM, Mario Limonciello wrote:
> diff --git a/drivers/platform/x86/amd/hfi/Kconfig b/drivers/platform/x86/amd/hfi/Kconfig
> new file mode 100644
> index 0000000000000..79e3b0073275c
> --- /dev/null
> +++ b/drivers/platform/x86/amd/hfi/Kconfig
> @@ -0,0 +1,18 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +#
> +# AMD Hardware Feedback Interface Driver
> +#
> +
> +config AMD_HFI
> +	bool "AMD Hetero Core Hardware Feedback Driver"
> +	depends on ACPI
> +	depends on CPU_SUP_AMD
> +	help
> +	 Select this option to enable the AMD Heterogeneous Core Hardware Feedback Interface. If
> +	 selected, hardware provides runtime thread classification guidance to the operating system
> +	 on the performance and energy efficiency capabilities of each heterogeneous CPU core.
> +	 These capabilities may vary due to the inherent differences in the core types and can
> +	 also change as a result of variations in the operating conditions of the system such
> +	 as power and thermal limits. If selected, the kernel relays updates in heterogeneous
> +	 CPUs' capabilities to userspace, allowing for more optimal task scheduling and
> +	 resource allocation, leveraging the diverse set of cores available.

Please adjust the help text to fit in 80 columns.
Thanks.

-- 
~Randy