Page MenuHomeFreeBSD
Differential D34365

cam: add hw.cam.iosched.read_bias
ClosedPublic
Actions

Authored by imp on Feb 24 2022, 12:20 AM.
Tags
None
Referenced Files
F161509650: D34365.id105621.diff
Sat, Jul 4, 10:15 AM
F161507736: D34365.id103186.diff
Sat, Jul 4, 9:50 AM
Unknown Object (File)
Fri, Jul 3, 8:02 AM
Unknown Object (File)
Wed, Jul 1, 9:44 AM
Unknown Object (File)
Jun 2 2026, 9:34 PM
Unknown Object (File)
May 26 2026, 1:23 AM
Unknown Object (File)
May 26 2026, 1:23 AM
Unknown Object (File)
May 16 2026, 2:58 PM
View All Files
Subscribers
None

Details

Reviewers
chs
Group Reviewers
cam
Commits
rGd592c0db8ba7: cam: add hw.cam.iosched.read_bias
Summary

Allow a global setting for the read_bias for the dynamic io
scheduler. This allows global policy to be set, in addition to the
existing per-drive policy. kern.cam.iosched.read_bias is a new tunable.

Sponsored by: Netflix

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Not Applicable
Unit
Tests Not Applicable

Event Timeline

imp created this revision.Feb 24 2022, 12:20 AM
Herald added a reviewer: cam. · View Herald TranscriptFeb 24 2022, 12:20 AM
imp requested review of this revision.Feb 24 2022, 12:20 AM
Harbormaster completed remote builds in B44561: Diff 103186.Feb 24 2022, 12:20 AM
imp added a reviewer: chs.Feb 24 2022, 12:21 AM
chs accepted this revision.Feb 24 2022, 12:50 AM
chs added inline comments.
sys/cam/cam_iosched.c
1246

this "val" parameter isn't used if the "ptr" parameter immediate before it is non-NULL, so you might as well just leave val 0 here.

This revision is now accepted and ready to land.Feb 24 2022, 12:50 AM
Closed by commit rGd592c0db8ba7: cam: add hw.cam.iosched.read_bias (authored by imp). · Explain WhyMay 1 2022, 5:29 PM
This revision was automatically updated to reflect the committed changes.
imp added a commit: rGd592c0db8ba7: cam: add hw.cam.iosched.read_bias.

Revision Contents
Changeset List

PathSize
sys/
cam/
13 lines

Diff 105621

View Options

sys/cam/cam_iosched.c

Loading...