additional sysfs entries for CPPC
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- v2 Latest2 patches 4 repliesIn review
- v12 patches 9 repliesSuperseded
Changes in v2 from the cover letter
- Removed caching of perf caps based on Rafael's inputs
Patches in v2 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/2 | ACPI / CPPC: Read lowest non linear perf in cppc_get_perf_capsdrivers/ include/ | +12 | 2 replies | |
| 2/2 | ACPI / CPPC: add sysfs entries for CPPC perf capabilitiesdrivers/ include/ | +34 | 0 replies |
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Cover letter [PATCH V2 0/2] additional sysfs entries for CPPC
This patch-set adds few additional sysfs entries to expose the performance capabilities of each CPU. The performance capabilities include highest perf, lowest perf, nominal perf and lowest non-linear perf. See 8.4.7.1 for ACPI 6.1 spec for details on these capabilities.
cppc_cpufreq driver operates in KHz scale whereas the delivered performance computed in userspace will be in abstract CPPC scale, so exposing perf capabilities should allow userspace to figure out the conversion factor from CPPC scale to KHz.
Changes in V2:
- Removed caching of perf caps based on Rafael's inputs
Prashanth Prakash (2):
ACPI / CPPC: Read lowest non linear perf in cppc_get_perf_caps ACPI / CPPC: add sysfs entries for CPPC perf capabilities
drivers/acpi/cppc_acpi.c | 80 ++++++++++++++++++++++++++---------------------- include/acpi/cppc_acpi.h | 3 +- 2 files changed, 46 insertions(+), 37 deletions(-)
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