cpufreq/amd-pstate: Remove obsolete amd_dynamic_epp documentation

[PATCH] cpufreq/amd-pstate: Remove obsolete amd_dynamic_epp documentation

Posted by Karl Mehltretter 3 weeks ago

The amd_dynamic_epp command-line parameter was removed. Dynamic EPP
is now selected through the per-policy energy_performance_preference
attribute, which is already documented.

Fixes: 32692fcf61ed ("cpufreq/amd-pstate: Remove "amd_dynamic_epp" cmdline and "dynamic_epp" sysfs")
Assisted-by: LLM
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
---
 Documentation/admin-guide/kernel-parameters.txt | 7 -------
 Documentation/admin-guide/pm/amd-pstate.rst     | 6 ------
 2 files changed, 13 deletions(-)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 4a12805a50ba5..1fa37bce5bb3a 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -499,13 +499,6 @@ Kernel parameters
 			disable
 			  Disable amd-pstate preferred core.
 
-	amd_dynamic_epp=
-			[X86]
-			disable
-			  Disable amd-pstate dynamic EPP.
-			enable
-			  Enable amd-pstate dynamic EPP.
-
 	amijoy.map=	[HW,JOY] Amiga joystick support
 			Map of devices attached to JOY0DAT and JOY1DAT
 			Format: <a>,<b>
diff --git a/Documentation/admin-guide/pm/amd-pstate.rst b/Documentation/admin-guide/pm/amd-pstate.rst
index 6fd72ba52df20..4c5d3d8acf645 100644
--- a/Documentation/admin-guide/pm/amd-pstate.rst
+++ b/Documentation/admin-guide/pm/amd-pstate.rst
@@ -481,12 +481,6 @@ For systems that support ``amd-pstate`` preferred core, the core rankings will
 always be advertised by the platform. But OS can choose to ignore that via the
 kernel parameter ``amd_prefcore=disable``.
 
-``amd_dynamic_epp``
-
-When AMD pstate is in auto mode, dynamic EPP will control whether the kernel
-autonomously changes the EPP mode. The default is disabled. It can be enabled
-with the kernel parameter ``amd_dynamic_epp=enable``.
-
 User Space Interface in ``sysfs`` - General
 ===========================================
 
-- 
2.53.0

Re: [PATCH] cpufreq/amd-pstate: Remove obsolete amd_dynamic_epp documentation

Posted by K Prateek Nayak 2 weeks, 4 days ago

Hello Karl,

On 9/5/2026 6:37 AM, Karl Mehltretter wrote:
> The amd_dynamic_epp command-line parameter was removed. Dynamic EPP
> is now selected through the per-policy energy_performance_preference
> attribute, which is already documented.
> 
> Fixes: 32692fcf61ed ("cpufreq/amd-pstate: Remove "amd_dynamic_epp" cmdline and "dynamic_epp" sysfs")
> Assisted-by: LLM
> Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>

Thank you for catching this. Feel free to include:

Reviewed-by: K Prateek Nayak <kprateek.nayak@amd.com>

> ---
>  Documentation/admin-guide/kernel-parameters.txt | 7 -------
>  Documentation/admin-guide/pm/amd-pstate.rst     | 6 ------
>  2 files changed, 13 deletions(-)
> 
> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
> index 4a12805a50ba5..1fa37bce5bb3a 100644
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -499,13 +499,6 @@ Kernel parameters
>  			disable
>  			  Disable amd-pstate preferred core.
>  
> -	amd_dynamic_epp=
> -			[X86]
> -			disable
> -			  Disable amd-pstate dynamic EPP.
> -			enable
> -			  Enable amd-pstate dynamic EPP.
> -
>  	amijoy.map=	[HW,JOY] Amiga joystick support
>  			Map of devices attached to JOY0DAT and JOY1DAT
>  			Format: <a>,<b>
> diff --git a/Documentation/admin-guide/pm/amd-pstate.rst b/Documentation/admin-guide/pm/amd-pstate.rst
> index 6fd72ba52df20..4c5d3d8acf645 100644
> --- a/Documentation/admin-guide/pm/amd-pstate.rst
> +++ b/Documentation/admin-guide/pm/amd-pstate.rst
> @@ -481,12 +481,6 @@ For systems that support ``amd-pstate`` preferred core, the core rankings will
>  always be advertised by the platform. But OS can choose to ignore that via the
>  kernel parameter ``amd_prefcore=disable``.
>  
> -``amd_dynamic_epp``
> -
> -When AMD pstate is in auto mode, dynamic EPP will control whether the kernel
> -autonomously changes the EPP mode. The default is disabled. It can be enabled
> -with the kernel parameter ``amd_dynamic_epp=enable``.
> -
>  User Space Interface in ``sysfs`` - General
>  ===========================================
>  

-- 
Thanks and Regards,
Prateek

Re: [PATCH] cpufreq/amd-pstate: Remove obsolete amd_dynamic_epp documentation

Posted by Mario Limonciello 2 weeks, 1 day ago


On 9/6/26 22:58, K Prateek Nayak wrote:
> Hello Karl,
> 
> On 9/5/2026 6:37 AM, Karl Mehltretter wrote:
>> The amd_dynamic_epp command-line parameter was removed. Dynamic EPP
>> is now selected through the per-policy energy_performance_preference
>> attribute, which is already documented.
>>
>> Fixes: 32692fcf61ed ("cpufreq/amd-pstate: Remove "amd_dynamic_epp" cmdline and "dynamic_epp" sysfs")
>> Assisted-by: LLM
>> Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
> 
> Thank you for catching this. Feel free to include:
> 
> Reviewed-by: K Prateek Nayak <kprateek.nayak@amd.com>
> 

Thanks, applied to my amd-pstate bleeding-edge branch.

>> ---
>>   Documentation/admin-guide/kernel-parameters.txt | 7 -------
>>   Documentation/admin-guide/pm/amd-pstate.rst     | 6 ------
>>   2 files changed, 13 deletions(-)
>>
>> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
>> index 4a12805a50ba5..1fa37bce5bb3a 100644
>> --- a/Documentation/admin-guide/kernel-parameters.txt
>> +++ b/Documentation/admin-guide/kernel-parameters.txt
>> @@ -499,13 +499,6 @@ Kernel parameters
>>   			disable
>>   			  Disable amd-pstate preferred core.
>>   
>> -	amd_dynamic_epp=
>> -			[X86]
>> -			disable
>> -			  Disable amd-pstate dynamic EPP.
>> -			enable
>> -			  Enable amd-pstate dynamic EPP.
>> -
>>   	amijoy.map=	[HW,JOY] Amiga joystick support
>>   			Map of devices attached to JOY0DAT and JOY1DAT
>>   			Format: <a>,<b>
>> diff --git a/Documentation/admin-guide/pm/amd-pstate.rst b/Documentation/admin-guide/pm/amd-pstate.rst
>> index 6fd72ba52df20..4c5d3d8acf645 100644
>> --- a/Documentation/admin-guide/pm/amd-pstate.rst
>> +++ b/Documentation/admin-guide/pm/amd-pstate.rst
>> @@ -481,12 +481,6 @@ For systems that support ``amd-pstate`` preferred core, the core rankings will
>>   always be advertised by the platform. But OS can choose to ignore that via the
>>   kernel parameter ``amd_prefcore=disable``.
>>   
>> -``amd_dynamic_epp``
>> -
>> -When AMD pstate is in auto mode, dynamic EPP will control whether the kernel
>> -autonomously changes the EPP mode. The default is disabled. It can be enabled
>> -with the kernel parameter ``amd_dynamic_epp=enable``.
>> -
>>   User Space Interface in ``sysfs`` - General
>>   ===========================================
>>   
>

Re: [PATCH] cpufreq/amd-pstate: Remove obsolete amd_dynamic_epp documentation

Posted by Randy Dunlap 2 weeks, 6 days ago


On 9/4/26 6:07 PM, Karl Mehltretter wrote:
> The amd_dynamic_epp command-line parameter was removed. Dynamic EPP
> is now selected through the per-policy energy_performance_preference
> attribute, which is already documented.
> 
> Fixes: 32692fcf61ed ("cpufreq/amd-pstate: Remove "amd_dynamic_epp" cmdline and "dynamic_epp" sysfs")
> Assisted-by: LLM
> Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>

Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Thanks.

> ---
>  Documentation/admin-guide/kernel-parameters.txt | 7 -------
>  Documentation/admin-guide/pm/amd-pstate.rst     | 6 ------
>  2 files changed, 13 deletions(-)
> 
> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
> index 4a12805a50ba5..1fa37bce5bb3a 100644
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -499,13 +499,6 @@ Kernel parameters
>  			disable
>  			  Disable amd-pstate preferred core.
>  
> -	amd_dynamic_epp=
> -			[X86]
> -			disable
> -			  Disable amd-pstate dynamic EPP.
> -			enable
> -			  Enable amd-pstate dynamic EPP.
> -
>  	amijoy.map=	[HW,JOY] Amiga joystick support
>  			Map of devices attached to JOY0DAT and JOY1DAT
>  			Format: <a>,<b>
> diff --git a/Documentation/admin-guide/pm/amd-pstate.rst b/Documentation/admin-guide/pm/amd-pstate.rst
> index 6fd72ba52df20..4c5d3d8acf645 100644
> --- a/Documentation/admin-guide/pm/amd-pstate.rst
> +++ b/Documentation/admin-guide/pm/amd-pstate.rst
> @@ -481,12 +481,6 @@ For systems that support ``amd-pstate`` preferred core, the core rankings will
>  always be advertised by the platform. But OS can choose to ignore that via the
>  kernel parameter ``amd_prefcore=disable``.
>  
> -``amd_dynamic_epp``
> -
> -When AMD pstate is in auto mode, dynamic EPP will control whether the kernel
> -autonomously changes the EPP mode. The default is disabled. It can be enabled
> -with the kernel parameter ``amd_dynamic_epp=enable``.
> -
>  User Space Interface in ``sysfs`` - General
>  ===========================================
>  

-- 
~Randy