| Message ID | 20240903203701.2695040-12-superm1@kernel.org |
|---|---|
| State | New |
| Headers | show |
| Series | Adjustments for preferred core detection | expand |
On Tue, Sep 03, 2024 at 03:37:01PM -0500, Mario Limonciello wrote: > From: Mario Limonciello <mario.limonciello@amd.com> > > `amd_pstate_prefcore_ranking` reflects the dynamic rankings of a CPU > core based on platform conditions. Explicitly include it in the > documentation. Thanks for adding this. > > Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com> > --- > Documentation/admin-guide/pm/amd-pstate.rst | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) > > diff --git a/Documentation/admin-guide/pm/amd-pstate.rst b/Documentation/admin-guide/pm/amd-pstate.rst > index d5c050ea390dc..210a808b74ec2 100644 > --- a/Documentation/admin-guide/pm/amd-pstate.rst > +++ b/Documentation/admin-guide/pm/amd-pstate.rst > @@ -252,7 +252,8 @@ In some ASICs, the highest CPPC performance is not the one in the ``_CPC`` > table, so we need to expose it to sysfs. If boost is not active, but > still supported, this maximum frequency will be larger than the one in > ``cpuinfo``. On systems that support preferred core, the driver will have > -different values for some cores than others. > +different values for some cores than others and this will reflect the values > +advertised by the platform at bootup. > This attribute is read-only. > > ``amd_pstate_lowest_nonlinear_freq`` > @@ -268,6 +269,12 @@ This attribute is read-only. > Whether the platform supports the preferred core feature and it has been > enabled. This attribute is read-only. > > +``amd_pstate_prefcore_ranking`` > + > +The performance ranking of the core. This number doesn't have any unit, but > +larger numbers are preferred at the time of reading. This can change at > +runtime based on platform conditions. This attribute is read-only. > + > ``energy_performance_available_preferences`` > > A list of all the supported EPP preferences that could be used for > -- > 2.43.0 >
diff --git a/Documentation/admin-guide/pm/amd-pstate.rst b/Documentation/admin-guide/pm/amd-pstate.rst index d5c050ea390dc..210a808b74ec2 100644 --- a/Documentation/admin-guide/pm/amd-pstate.rst +++ b/Documentation/admin-guide/pm/amd-pstate.rst @@ -252,7 +252,8 @@ In some ASICs, the highest CPPC performance is not the one in the ``_CPC`` table, so we need to expose it to sysfs. If boost is not active, but still supported, this maximum frequency will be larger than the one in ``cpuinfo``. On systems that support preferred core, the driver will have -different values for some cores than others. +different values for some cores than others and this will reflect the values +advertised by the platform at bootup. This attribute is read-only. ``amd_pstate_lowest_nonlinear_freq`` @@ -268,6 +269,12 @@ This attribute is read-only. Whether the platform supports the preferred core feature and it has been enabled. This attribute is read-only. +``amd_pstate_prefcore_ranking`` + +The performance ranking of the core. This number doesn't have any unit, but +larger numbers are preferred at the time of reading. This can change at +runtime based on platform conditions. This attribute is read-only. + ``energy_performance_available_preferences`` A list of all the supported EPP preferences that could be used for