[v2] Zen6 client CPPC

[PATCH v2 0/3] Zen6 client CPPC

Mario Limonciello posted 3 patches 3 weeks, 3 days ago

Diff against v1 v3
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arch/x86/kernel/acpi/cppc.c    | 166 ++++++++++++++++++++++-----------
drivers/cpufreq/acpi-cpufreq.c |  17 ++--
drivers/cpufreq/amd-pstate.c   |  20 ++--
include/acpi/cppc_acpi.h       |  14 ++-
4 files changed, 143 insertions(+), 74 deletions(-)

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[PATCH v2 0/3] Zen6 client CPPC

Posted by Mario Limonciello 3 weeks, 3 days ago

Zen6 client platforms use CPPC differently than previous platforms
and knowing maximum frequency for a core type is needed for capacity
calculations.

Newer versions of the ACPI will introduce a proper interface
for getting this information, but for now hardcode values so that
these systems perform as intended and to unblock future scheduler
work while we continue to wait.

v2:
 * Rebase on v7.3-rc1 + [1]
 * Add tags
 * Use CPU features instead of FMR
 * Use Prateek's suggested fallback path

Link: https://lore.kernel.org/linux-acpi/20260830115644.2056983-1-christian.loehle@arm.com/ [1]

Mario Limonciello (3):
  ACPI: CPPC: Refactor boost ratio handling
  cpufreq/acpi-cpufreq: Use amd_get_boost_ratio()
  cpufreq/amd-pstate: Get Highest Freq for a CPU

 arch/x86/kernel/acpi/cppc.c    | 166 ++++++++++++++++++++++-----------
 drivers/cpufreq/acpi-cpufreq.c |  17 ++--
 drivers/cpufreq/amd-pstate.c   |  20 ++--
 include/acpi/cppc_acpi.h       |  14 ++-
 4 files changed, 143 insertions(+), 74 deletions(-)

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2.43.0