hyperv/vmbus: Avoid extra copy of page information.
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Authored by sepherosa_gmail.com on Jan 19 2016, 3:07 AM.

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Reviewers

howard0su_gmail.com
honzhan_microsoft.com
decui_microsoft.com
delphij
royger
adrian

Group Reviewers

network

Commits

rS294705: hyperv/vmbus: Avoid extra copy of page information.

Summary

The page information array could contain up to 32 elements (i.e. 512B). And on network side w/ TSO, 11+ (176B+) elements, i.e. ~44K TSO packet, in the page information array is quite common.

This saves us some cpu cycles.

Diff Detail

Repository

rS FreeBSD src repository - subversion

Lint

Lint Not Applicable

Unit

Tests Not Applicable

Event Timeline

sepherosa_gmail.com updated this revision to Diff 12445.Jan 19 2016, 3:07 AM

sepherosa_gmail.com retitled this revision from to hyperv/vmbus: Avoid extra copy of page information..

sepherosa_gmail.com updated this object.

sepherosa_gmail.com edited the test plan for this revision. (Show Details)

sepherosa_gmail.com added reviewers: network, decui_microsoft.com, honzhan_microsoft.com, howard0su_gmail.com, royger, adrian, delphij.

adrian accepted this revision.Jan 22 2016, 5:03 PM

adrian edited edge metadata.

This revision is now accepted and ready to land.Jan 22 2016, 5:03 PM

delphij accepted this revision.Jan 22 2016, 6:08 PM

delphij edited edge metadata.

Closed by commit rS294705: hyperv/vmbus: Avoid extra copy of page information. (authored by sephe). · Explain WhyJan 25 2016, 5:33 AM

This revision was automatically updated to reflect the committed changes.

Revision Contents
Changeset List

Path

Size

head/

sys/

dev/

hyperv/

vmbus/

hv_channel.c

33 lines

Diff 12673

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head/sys/dev/hyperv/vmbus/hv_channel.c

hyperv/vmbus: Avoid extra copy of page information.ClosedPublicActions