lkml.org 
[lkml]   [2020]   [Nov]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v3 0/4] cpufreq: intel_pstate: Handle powersave governor correctly in the passive mode with HWP
Date
Hi,

On Monday, November 9, 2020 5:49:49 PM CET Rafael J. Wysocki wrote:
>
> Even after the changes made very recently, the handling of the powersave
> governor is not exactly as expected when intel_pstate operates in the
> "passive" mode with HWP enabled.
>
> Namely, in that case HWP is not limited to the policy min frequency, but it
> can scale the frequency up to the policy max limit and it cannot be constrained
> currently, because there are no provisions for that in the framework.
>
> To address that, patches [1-3/4] add a new governor flag to indicate that this
> governor wants the target frequency to be set to the exact value passed to the
> driver, if possible, and change the powersave and performance governors to have
> that flag set.
>
> The last patch makes intel_pstate take that flag into account when programming
> the HWP Request MSR.

The v3 simply uses different names for the new governor flags.

Thanks!



\
 
 \ /
  Last update: 2020-11-10 18:28    [W:0.124 / U:0.596 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site