linux-kernel - Re: [PATCH v2] cpufreq: amd-pstate: Set default governor to schedutil

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Message-ID: <CAJZ5v0isvR-cKN7x7THEN_sbzdNYUMNXx9OVwgif_TQ0tYgvoA@mail.gmail.com>
Date:   Tue, 20 Jun 2023 12:19:35 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Perry Yuan <perry.yuan@....com>
Cc:     rafael.j.wysocki@...el.com, viresh.kumar@...aro.org,
        Ray.Huang@....com, Mario.Limonciello@....com,
        Deepak.Sharma@....com, Wyes.Karny@....com, gautham.shenoy@....com,
        Sunpeng.Li@....com, Xinmei.Huang@....com, Xiaojian.Du@....com,
        Li.Meng@....com, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] cpufreq: amd-pstate: Set default governor to schedutil

On Mon, Jun 12, 2023 at 5:04 AM Perry Yuan <perry.yuan@....com> wrote:
>
> From: Mario Limonciello <mario.limonciello@....com>
>
> The Kconfig currently defaults the governor to schedutil on x86_64
> only when intel-pstate and SMP have been selected.
>
> If the kernel is built only with amd-pstate, the default governor
> should also be schedutil.
>
> Cc: Sun Peng (Leo) Li <sunpeng.li@....com>
> Signed-off-by: Mario Limonciello <mario.limonciello@....com>
> Reviewed-by: Leo Li <sunpeng.li@....com>
> Acked-by: Huang Rui <ray.huang@....com>
> Tested-by: Perry Yuan <Perry.Yuan@....com>
> ---
>  drivers/cpufreq/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
> index 2c839bd2b051..a1c51abddbc5 100644
> --- a/drivers/cpufreq/Kconfig
> +++ b/drivers/cpufreq/Kconfig
> @@ -38,7 +38,7 @@ choice
>         prompt "Default CPUFreq governor"
>         default CPU_FREQ_DEFAULT_GOV_USERSPACE if ARM_SA1110_CPUFREQ
>         default CPU_FREQ_DEFAULT_GOV_SCHEDUTIL if ARM64 || ARM
> -       default CPU_FREQ_DEFAULT_GOV_SCHEDUTIL if X86_INTEL_PSTATE && SMP
> +       default CPU_FREQ_DEFAULT_GOV_SCHEDUTIL if (X86_INTEL_PSTATE || X86_AMD_PSTATE) && SMP
>         default CPU_FREQ_DEFAULT_GOV_PERFORMANCE
>         help
>           This option sets which CPUFreq governor shall be loaded at
> --

Applied as 6.5 material, thanks!