This is essentially a combined v2 of the following series:
https://lore.kernel.org/lkml/20260715074822.16324-1-kprateek.nayak@amd.com/
https://lore.kernel.org/lkml/20260630185904.5602-1-kprateek.nayak@amd.com/
The first two patches fix BIOS min perf setting and its persistence
across kexec. The next set of patches rework the Dynamic EPP feature
into an energy_performance_preference mode.
Unit tests are extended to cover the new dynamic_epp mode and also the
floor perf (CPPC Performance Priority) feature for completeness.
Patches are based on:
git.kernel.org/pub/scm/linux/kernel/git/superm1/linux.git bleeding-edge
at commit 39c0cf62fc78 ("cpufreq/amd-pstate: handle missing policy in
dynamic EPP callbacks")
Everyone has been Cc'd on the cover letter. Respective maintainers have
been Cc'd on the relevant patches to reduce noise. Lists get the full
series.
---
Changelog rfc v1..v2:
o Simplified bios_min_perf handover during kexec by removing the
defensive check (Mario).
o Removed the amd_dynamic_epp kernel cmdline and the dynamic_epp sysfs
file as they are now redundant.
o Updated the documentation.
o Updated unit test to account for dynamic_epp removal.
o Added unit test for floor frequency. (Kalpana)
Individual patches have breief changelogs attached. Reviews and testing
is highly appreciated.
--
K Prateek Nayak (9):
cpufreq/amd-pstate: Set min_limit_freq based on bios_min_perf
cpufreq/amd-pstate: Remove the defensive check for bios_min_perf
cpufreq/amd-pstate: Extract platform profile to EPP conversion into a
helper
cpufreq/amd-pstate: Add dynamic EPP as an
"energy_performance_preference" mode
cpufreq/amd-pstate: Remove "amd_dynamic_epp" cmdline and "dynamic_epp"
sysfs
Documentation/amd-pstate: Update dynamic_epp documentation with new
behavior
cpufreq/amd-pstate: Reduce the scope of exported symbols
cpufreq/amd-pstate-ut: Add unit test for "dynamic" EPP mode
cpufreq/amd-pstate-ut: Add unit test for CPPC Performance Priority
Documentation/admin-guide/pm/amd-pstate.rst | 46 ++--
drivers/cpufreq/amd-pstate-ut.c | 128 +++++++++--
drivers/cpufreq/amd-pstate.c | 240 ++++++++++----------
drivers/cpufreq/amd-pstate.h | 9 +
4 files changed, 253 insertions(+), 170 deletions(-)
base-commit: 39c0cf62fc7851a17782e7efe8dfb2948739c681
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2.34.1