linux-kernel - Re: [PATCH V12 1/7] x86: Drop CPU_SUP_INTEL from SCHED_MC

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Date: Tue, 9 Jan 2024 11:45:12 +0100
From: Borislav Petkov <bp@...en8.de>
To: Meng Li <li.meng@....com>
Cc: "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
	Huang Rui <ray.huang@....com>, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org, x86@...nel.org,
	linux-acpi@...r.kernel.org, Shuah Khan <skhan@...uxfoundation.org>,
	linux-kselftest@...r.kernel.org,
	Nathan Fontenot <nathan.fontenot@....com>,
	Deepak Sharma <deepak.sharma@....com>,
	Alex Deucher <alexander.deucher@....com>,
	Mario Limonciello <mario.limonciello@....com>,
	Shimmer Huang <shimmer.huang@....com>,
	Perry Yuan <Perry.Yuan@....com>, Xiaojian Du <Xiaojian.Du@....com>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Oleksandr Natalenko <oleksandr@...alenko.name>
Subject: Re: [PATCH V12 1/7] x86: Drop CPU_SUP_INTEL from SCHED_MC_PRIO for
 the expansion.

On Tue, Dec 05, 2023 at 02:35:31PM +0800, Meng Li wrote:
> amd-pstate driver also uses SCHED_MC_PRIO, so decouple the requirement
> of CPU_SUP_INTEL from the dependencies to allow compilation in kernels
> without Intel CPU support.
> 
> Tested-by: Oleksandr Natalenko <oleksandr@...alenko.name>
> Reviewed-by: Mario Limonciello <mario.limonciello@....com>
> Reviewed-by: Huang Rui <ray.huang@....com>
> Reviewed-by: Perry Yuan <perry.yuan@....com>
> Signed-off-by: Meng Li <li.meng@....com>
> ---
>  arch/x86/Kconfig | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 3762f41bb092..3e57773f946a 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -1054,8 +1054,9 @@ config SCHED_MC
>  
>  config SCHED_MC_PRIO
>  	bool "CPU core priorities scheduler support"
> -	depends on SCHED_MC && CPU_SUP_INTEL
> -	select X86_INTEL_PSTATE
> +	depends on SCHED_MC
> +	select X86_INTEL_PSTATE if CPU_SUP_INTEL
> +	select X86_AMD_PSTATE if CPU_SUP_AMD && ACPI
>  	select CPU_FREQ
>  	default y
>  	help
> -- 

I was gonna ask why the selects but apparently mingo wants SCHED_MC_PRIO
to be selectable easier:

0a21fc1214a2 ("sched/x86: Make CONFIG_SCHED_MC_PRIO=y easier to enable")

So,

Acked-by: Borislav Petkov (AMD) <bp@...en8.de>

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette