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AMD's P-state driver for Zen2 and Zen3 processors

Started by AxL, August 26, 2022, 04:17:41 PM

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AxL

Hi! @pavroo


I would like to know, if the sparky 5.19.x series kernels, use AMD's P-state driver for Zen2 and Zen3 processors.

As always, thank you very much for all your work and support with SparkyLinux.









Cheers !! 
➤ Want to know how you can use a program you have never used before? "man" will be your best new friend! Type "man <pkg-name>" in a shell.
➤ Or, point your browser to "manpages.debian.org/<pkg-name>" .... RTFM !!!

AxL

Quote from: AxL on August 26, 2022, 04:17:41 PM[...]
I would like to know, if the sparky 5.19.x series kernels, use AMD's P-state driver for Zen2 and Zen3 processors.


Anyway, if after four days there is no answer, it is clear to me that your kernels don't use AMD P-state.


Thanks anyway
➤ Want to know how you can use a program you have never used before? "man" will be your best new friend! Type "man <pkg-name>" in a shell.
➤ Or, point your browser to "manpages.debian.org/<pkg-name>" .... RTFM !!!

AxL

For those who might be interested:


The latest version of the kernel (6.1.x series) amd_pstate driver is included by default (builtin) in the kernel itself (NO longer available as a module anymore).


➤ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver
amd-pstate

➤ sudo modinfo amd_pstate
name:           amd_pstate
filename:       (builtin)
license:        GPL
file:           drivers/cpufreq/amd_pstate
description:    AMD Processor P-state Frequency Driver
author:         Huang Rui <ray.huang@amd.com>

So with this change, anyone who wants to enable it, will have to add 'amd_pstate=passive' to the kernel (as boot parameter) in the command line.








- More info:

















Cheers !! 
➤ Want to know how you can use a program you have never used before? "man" will be your best new friend! Type "man <pkg-name>" in a shell.
➤ Or, point your browser to "manpages.debian.org/<pkg-name>" .... RTFM !!!

AxL

An update about the message written above. 

With versions 6.4.x and 6.5.x series kernels, there are new options with the amd_pstate driver.


➤ Want to know how you can use a program you have never used before? "man" will be your best new friend! Type "man <pkg-name>" in a shell.
➤ Or, point your browser to "manpages.debian.org/<pkg-name>" .... RTFM !!!

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