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libcontainer/intelrdt: rm init() from intelrdt.go#2678

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AkihiroSuda merged 1 commit intoopencontainers:masterfrom
xiaochenshen:rdt-rm-init
Dec 22, 2020
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libcontainer/intelrdt: rm init() from intelrdt.go#2678
AkihiroSuda merged 1 commit intoopencontainers:masterfrom
xiaochenshen:rdt-rm-init

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@xiaochenshen xiaochenshen commented Nov 10, 2020

Use sync.Once to init Intel RDT when needed for a small speedup to
operations which do not require Intel RDT.

Simplify IntelRdtManager initialization in LinuxFactory.

Signed-off-by: Xiaochen Shen xiaochen.shen@intel.com

@xiaochenshen xiaochenshen mentioned this pull request Nov 10, 2020
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xiaochenshen commented Nov 10, 2020 •
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This is the follow-up PR for #2643 :
@kolyshkin suggested and reviewed this change. But appreciate the input from @cyphar on the matter.

See details in #2643 (comment).

Please help review the third commit only, the first and second commits are dependencies.

crosbymichael
crosbymichael previously approved these changes Nov 10, 2020
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LGTM

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xiaochenshen commented Nov 10, 2020

Rebased for dependency #2677 has been merged.
No code change.

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Creatone commented Nov 16, 2020

LGTM

AkihiroSuda
AkihiroSuda previously approved these changes Nov 16, 2020
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xiaochenshen commented Nov 16, 2020

@crosbymichael @AkihiroSuda
Thank you very much for code review and approval!
This PR has a dependent commit which is addressed in #2643 .
Could you also help review #2643 which one more LGTM needed to merge? Thank you!

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xiaochenshen commented Nov 18, 2020 •
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@crosbymichael @AkihiroSuda @kolyshkin @Creatone
Code rebased to merge with master branch: just removed the dependent commits, the patch for this PR keeps unchanged.
Please help re-approve.
Thank you!

@xiaochenshen xiaochenshen force-pushed the rdt-rm-init branch 5 times, most recently from d012059 to 1a74585 Compare November 19, 2020 04:50
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xiaochenshen commented Nov 19, 2020

Travis-CI always fails on cases "Go: 1.15.x", "Go: 1.14.x", and "Go: tip" with the same error:
https://travis-ci.org/github/opencontainers/runc/jobs/744584826#L1922

Looks like something wrong with Travis-CI itself?

@xiaochenshen xiaochenshen force-pushed the rdt-rm-init branch 2 times, most recently from 8ac1042 to 481ce35 Compare November 20, 2020 12:54
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xiaochenshen commented Nov 20, 2020

The Travis-CI system issue seems to be fixed already.

@crosbymichael @AkihiroSuda @kolyshkin @Creatone
Code rebased but the patch keeps unchanged.
Could you help re-approve at your convenience?
Thank you!

kolyshkin
kolyshkin reviewed Nov 23, 2020
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xiaochenshen commented Dec 7, 2020

@crosbymichael @AkihiroSuda @kolyshkin
This PR is pending for a long time. I think just re-approvals are required for merge. Am I right?
The code change in the old version of the patch has been approved by you. But then this PR is rebased against master branch (without code change), the original approvals are outdated.

Could you help re-approve at your convenience?
Thank you very much for help!

kolyshkin
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LGTM

kolyshkin
kolyshkin approved these changes Dec 16, 2020
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LGTM

kolyshkin
kolyshkin reviewed Dec 16, 2020
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On a second thought, I think it needs to be changed to not require user call Init explicitly (see details above).

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xiaochenshen commented Dec 16, 2020

On a second thought, I think it needs to be changed to not require user call Init explicitly (see details above).

@kolyshkin Thank you very much for code review and good suggestions. I will make change to prevent calling Init() explicitly by outside caller.

@xiaochenshen xiaochenshen force-pushed the rdt-rm-init branch 2 times, most recently from 0634d26 to 325a74d Compare December 16, 2020 15:16
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xiaochenshen commented Dec 16, 2020

@kolyshkin
I have made the change according to your suggestion.

Change log:

  1. Remove intelrdt.Init() call in IntelRdtFs().
  2. Privatize and rename Init() to featuresInit().
  3. Call featuresInit() in Is{CAT | MBA | MBASc | CMT | MBM}Enabled().

@xiaochenshen
libcontainer/intelrdt: rm init() from intelrdt.go
325a74d 
Use sync.Once to init Intel RDT when needed for a small speedup to
operations which do not require Intel RDT.

Simplify IntelRdtManager initialization in LinuxFactory.

Signed-off-by: Xiaochen Shen <xiaochen.shen@intel.com>
kolyshkin
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LGTM, and thanks for working on this.

@AkihiroSuda PTAL

@AkihiroSuda AkihiroSuda merged commit 5efdc0c into opencontainers:master Dec 22, 2020
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@kolyshkin kolyshkin kolyshkin approved these changes

@AkihiroSuda AkihiroSuda AkihiroSuda approved these changes

@crosbymichael crosbymichael Awaiting requested review from crosbymichael

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@xiaochenshen @Creatone @crosbymichael @kolyshkin @AkihiroSuda