diff mbox series

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

Message ID 20231129065437.290183-8-li.meng@amd.com
State Superseded
Headers show
Series [V11,1/7] x86: Drop CPU_SUP_INTEL from SCHED_MC_PRIO for the expansion. | expand

Commit Message

Meng, Li (Jassmine) Nov. 29, 2023, 6:54 a.m. UTC 
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@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
---
 Documentation/admin-guide/kernel-parameters.txt | 5 +++++
 1 file changed, 5 insertions(+)

Comments

Yuan, Perry Nov. 30, 2023, 5:52 a.m. UTC | #1 
[AMD Official Use Only - General]

> -----Original Message-----
> From: Meng, Li (Jassmine) <Li.Meng@amd.com>
> Sent: Wednesday, November 29, 2023 2:55 PM
> To: Rafael J . Wysocki <rafael.j.wysocki@intel.com>; Huang, Ray
> <Ray.Huang@amd.com>
> Cc: linux-pm@vger.kernel.org; linux-kernel@vger.kernel.org; x86@kernel.org;
> linux-acpi@vger.kernel.org; Shuah Khan <skhan@linuxfoundation.org>; linux-
> kselftest@vger.kernel.org; Fontenot, Nathan <Nathan.Fontenot@amd.com>;
> Sharma, Deepak <Deepak.Sharma@amd.com>; Deucher, Alexander
> <Alexander.Deucher@amd.com>; Limonciello, Mario
> <Mario.Limonciello@amd.com>; Huang, Shimmer
> <Shimmer.Huang@amd.com>; Yuan, Perry <Perry.Yuan@amd.com>; Du,
> Xiaojian <Xiaojian.Du@amd.com>; Viresh Kumar <viresh.kumar@linaro.org>;
> Borislav Petkov <bp@alien8.de>; Oleksandr Natalenko
> <oleksandr@natalenko.name>; Meng, Li (Jassmine) <Li.Meng@amd.com>;
> Karny, Wyes <Wyes.Karny@amd.com>
> 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@amd.com>
> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
> Reviewed-by: Wyes Karny <wyes.karny@amd.com>
> Reviewed-by: Huang Rui <ray.huang@amd.com>
> Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
> ---
>  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@amd.com>
diff mbox series

Patch

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>