Differential D57825

hwpstate_amd: Detect ACPI _CPC object to enable CPPC
Needs ReviewPublic
Actions

Authored by aokblast on Wed, Jun 24, 6:24 PM.

Tags

None

Referenced Files

	F160636648: D57825.diff
	Fri, Jun 26, 9:32 AM

	Unknown Object (File)
	Thu, Jun 25, 8:09 AM

	Unknown Object (File)
	Thu, Jun 25, 5:24 AM

	Unknown Object (File)
	Thu, Jun 25, 4:40 AM

Subscribers

Details

Reviewers

Summary

We find some devices' CPU with CPPC support breaks the autonomous mode.
However, without Kernel Governer, making CPU stay in highest_performace
largely increase the CPU power consumption. As a concession, we enforace
ACPI _CPC check to enable CPPC by default. Also, provide a sysctl to
disable this check.

Diff Detail

Repository

rG FreeBSD src repository

Lint

Lint Passed

Unit

No Test Coverage

Build Status

Buildable 74207
Build 71090: arc lint + arc unit

Event Timeline

aokblast created this revision.Wed, Jun 24, 6:24 PM

Herald added a subscriber: imp. · View Herald TranscriptWed, Jun 24, 6:24 PM

aokblast requested review of this revision.Wed, Jun 24, 6:24 PM

Harbormaster completed remote builds in B74207: Diff 180557.Wed, Jun 24, 6:24 PM

aokblast added a reviewer: olce.Wed, Jun 24, 6:24 PM

aokblast added parent revisions: D55505: acpi_perf: Mark readonly when using FFH, D55476: x86: Implement Functional Fixed Hardware in SYS_RES, D55475: acpi: Support Functional Fixed Hardware, D55474: acpi_cppc: Add cppc library for parsing ACPI _CPC object..

Enable FFH

Harbormaster completed remote builds in B74245: Diff 180618.Thu, Jun 25, 1:22 PM

Minor fixes

Harbormaster completed remote builds in B74246: Diff 180619.Thu, Jun 25, 1:30 PM

Revision Contents
Changeset List

Path

Size

sys/

x86/

cpufreq/

61 lines

Diff 180557

sys/x86/cpufreq/hwpstate_amd.c

Loading...