RE: [PATCH V11 7/7] Documentation: introduce amd-pstate preferrd core mode kernel command line options

[Yuan, Perry]

[AMD Official Use Only - General]

> -----Original Message-----
> From: Meng, Li (Jassmine) <Li.Meng@xxxxxxx>
> Sent: Wednesday, November 29, 2023 2:55 PM
> To: Rafael J . Wysocki <rafael.j.wysocki@xxxxxxxxx>; Huang, Ray
> <Ray.Huang@xxxxxxx>
> Cc: linux-pm@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; x86@xxxxxxxxxx;
> linux-acpi@xxxxxxxxxxxxxxx; Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>; linux-
> kselftest@xxxxxxxxxxxxxxx; Fontenot, Nathan <Nathan.Fontenot@xxxxxxx>;
> Sharma, Deepak <Deepak.Sharma@xxxxxxx>; Deucher, Alexander
> <Alexander.Deucher@xxxxxxx>; Limonciello, Mario
> <Mario.Limonciello@xxxxxxx>; Huang, Shimmer
> <Shimmer.Huang@xxxxxxx>; Yuan, Perry <Perry.Yuan@xxxxxxx>; Du,
> Xiaojian <Xiaojian.Du@xxxxxxx>; Viresh Kumar <viresh.kumar@xxxxxxxxxx>;
> Borislav Petkov <bp@xxxxxxxxx>; Oleksandr Natalenko
> <oleksandr@xxxxxxxxxxxxxx>; Meng, Li (Jassmine) <Li.Meng@xxxxxxx>;
> Karny, Wyes <Wyes.Karny@xxxxxxx>
> Subject: [PATCH V11 7/7] Documentation: introduce amd-pstate preferrd core
> mode kernel command line options
>
> amd-pstate driver support enable/disable preferred core.
> Default enabled on platforms supporting amd-pstate preferred core.
> Disable amd-pstate preferred core with
> "amd_prefcore=disable" added to the kernel command line.
>
> Signed-off-by: Meng Li <li.meng@xxxxxxx>
> Reviewed-by: Mario Limonciello <mario.limonciello@xxxxxxx>
> Reviewed-by: Wyes Karny <wyes.karny@xxxxxxx>
> Reviewed-by: Huang Rui <ray.huang@xxxxxxx>
> Tested-by: Oleksandr Natalenko <oleksandr@xxxxxxxxxxxxxx>
> ---
>  Documentation/admin-guide/kernel-parameters.txt | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/Documentation/admin-guide/kernel-parameters.txt
> b/Documentation/admin-guide/kernel-parameters.txt
> index 758bb25ea3e6..008bdfd63c22 100644
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -363,6 +363,11 @@
>                         selects a performance level in this range and
> appropriate
>                         to the current workload.
>
> +     amd_prefcore=
> +                     [X86]
> +                     disable
> +                       Disable amd-pstate preferred core.
> +
>       amijoy.map=     [HW,JOY] Amiga joystick support
>                       Map of devices attached to JOY0DAT and JOY1DAT
>                       Format: <a>,<b>
> --
> 2.34.1

Reviewed-by: Perry Yuan < perry.yuan@xxxxxxx>