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amd-pstate: Add missing documentation for amd_pstate_prefcore_ranking

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`amd_pstate_prefcore_ranking` reflects the dynamic rankings of a CPU
core based on platform conditions.  Explicitly include it in the
documentation.

Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
This commit is contained in:
Mario Limonciello
2024-09-03 14:43:10 -05:00
parent b96b82d1af
commit 15a2b764ea
1 changed files with 8 additions and 1 deletions
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9
Documentation/admin-guide/pm/amd-pstate.rst
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@@ -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