8253797: [cgroups v2] Account for the fact that swap accounting is disabled on some systems

[ebaron]

Hi all,

This pull request contains a backport of commit 66936111 from the openjdk/jdk repository.

The commit being backported was authored by Severin Gehwolf on 10 Dec 2020 and was reviewed by Harold Seigel.

Thanks!

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8253797: [cgroups v2] Account for the fact that swap accounting is disabled on some systems

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk11u-dev pull/987/head:pull/987
$ git checkout pull/987

Update a local copy of the PR:
$ git checkout pull/987
$ git pull https://git.openjdk.java.net/jdk11u-dev pull/987/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 987

View PR using the GUI difftool:
$ git pr show -t 987

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk11u-dev/pull/987.diff

[bridgekeeper]

👋 Welcome back ebaron! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

@ebaron This change now passes all automated pre-integration checks.

After integration, the commit message for the final commit will be:

8253797: [cgroups v2] Account for the fact that swap accounting is disabled on some systems

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 50 new commits pushed to the master branch:

• 8482b37: 8284756: [11u] Remove unused isUseContainerSupport in CgroupV1Subsystem
• 1f20c8d: 8281274: deal with ActiveProcessorCount in os::Linux::print_container_info
• bc28d8f: 8217233: Update build settings for AIX/xlc
• 24fec25: 8203238: [TESTBUG] rewrite MemOptions shell test in Java
• f5586d9: 8203239: [TESTBUG] remove vmTestbase/vm/gc/kind/parOld test
• 3a6dbb4: 8208207: Test nsk/stress/jni/gclocker/gcl001 fails after co-location
• 684fe80: 8220658: Improve the readability of container information in the error log
• c38229f: 8284507: GHA: Only check test results if testing was not skipped
• 6f0e5b1: 8284604: [11u] Update Boot JDK used in GHA to 11.0.14.1
• 869b259: 8284389: Improve stability of GHA Pre-submit testing by caching cygwin installer
• ... and 40 more: https://git.openjdk.java.net/jdk11u-dev/compare/4c8b0990333913bb990c40200515dd83149bb843...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

As you do not have Committer status in this project an existing Committer must agree to sponsor your change.

➡️ To flag this PR as ready for integration with the above commit message, type /integrate in a new comment. (Afterwards, your sponsor types /sponsor in a new comment to perform the integration).

[mlbridge]

Webrevs

• 00: Full (e2839b19)

[ebaron]

/integrate

[openjdk]

@ebaron
Your change (at version e2839b1) is now ready to be sponsored by a Committer.

[jerboaa]

/sponsor

[openjdk]

Going to push as commit 8de4b89.
Since your change was applied there have been 50 commits pushed to the master branch:

• 8482b37: 8284756: [11u] Remove unused isUseContainerSupport in CgroupV1Subsystem
• 1f20c8d: 8281274: deal with ActiveProcessorCount in os::Linux::print_container_info
• bc28d8f: 8217233: Update build settings for AIX/xlc
• 24fec25: 8203238: [TESTBUG] rewrite MemOptions shell test in Java
• f5586d9: 8203239: [TESTBUG] remove vmTestbase/vm/gc/kind/parOld test
• 3a6dbb4: 8208207: Test nsk/stress/jni/gclocker/gcl001 fails after co-location
• 684fe80: 8220658: Improve the readability of container information in the error log
• c38229f: 8284507: GHA: Only check test results if testing was not skipped
• 6f0e5b1: 8284604: [11u] Update Boot JDK used in GHA to 11.0.14.1
• 869b259: 8284389: Improve stability of GHA Pre-submit testing by caching cygwin installer
• ... and 40 more: https://git.openjdk.java.net/jdk11u-dev/compare/4c8b0990333913bb990c40200515dd83149bb843...master

Your commit was automatically rebased without conflicts.

[openjdk]

@jerboaa @ebaron Pushed as commit 8de4b89.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.