Page MenuHomeFreeBSD
Differential D12260

cpufreq(4) hwpstate: Yield CPU awaiting frequency change
ClosedPublic
Actions

Authored by cem on Sep 6 2017, 8:01 PM.
Tags
None
Referenced Files
Unknown Object (File)
Wed, Oct 29, 3:03 AM
Unknown Object (File)
Wed, Oct 29, 3:03 AM
Unknown Object (File)
Wed, Oct 29, 3:03 AM
Unknown Object (File)
Tue, Oct 28, 9:02 PM
Unknown Object (File)
Oct 10 2025, 12:00 PM
Unknown Object (File)
Oct 4 2025, 5:04 AM
Unknown Object (File)
Sep 30 2025, 12:53 AM
Unknown Object (File)
Jul 9 2025, 12:40 AM
View All 88 Files
Subscribers
None

Details

Reviewers
avg
jhb
mjoras
truckman
Commits
rS323286: cpufreq(4) hwpstate: Yield CPU awaiting frequency change
Summary

It doesn't seem necessary to busy the CPU while waiting to transition
into a different p-state.

Test Plan

Transitions continue to work (well, P0 and P2), just like before.

Diff Detail

Repository
rS FreeBSD src repository - subversion
Lint
Lint Not Applicable
Unit
Tests Not Applicable

Event Timeline

cem created this revision.Sep 6 2017, 8:01 PM
truckman accepted this revision.Sep 7 2017, 5:57 PM

Builds fine and doesn't appear to break anything on my Ryzen machine.

This revision is now accepted and ready to land.Sep 7 2017, 5:57 PM
Closed by commit rS323286: cpufreq(4) hwpstate: Yield CPU awaiting frequency change (authored by cem). · Explain WhySep 7 2017, 8:20 PM
This revision was automatically updated to reflect the committed changes.

Revision Contents
Changeset List

PathSize
head/
sys/
x86/
cpufreq/
14 lines

Diff 32786

View Options

head/sys/x86/cpufreq/hwpstate.c

Loading...