RFR: 8322420: [Linux] cgroup v2: Limits in parent nested control groups are not detected [v12]

[Severin Gehwolf]

On Thu, 11 Jul 2024 06:54:27 GMT, Jan Kratochvil <jkratochvil at openjdk.org> wrote:

>> The testcase requires root permissions.
>> 
>> Designed by  Severin Gehwolf, implemented by Jan Kratochvil.
>
> Jan Kratochvil has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 103 commits:
> 
>  - Fix the gtest
>  - fix compilation warning
>  - fix the gtest
>  - less refactorizations
>  - remove not a real backward compat.
>  - whitespace
>  - less refactorizations
>  - reduce refactorizations
>  - Fix caching
>  - Merge branch 'master' into master-cgroup
>  - ... and 93 more: https://git.openjdk.org/jdk/compare/537d20af...060e7688

Feel free to take this alternative fix as inspiration: https://github.com/openjdk/jdk/compare/master...jerboaa:jdk:jdk-8322420_cgroup_hierarchy_walk_init There ought to be a way to remove the duplication between cgv1 and cgv2's impl of `adjust_controller()` but I haven't spent time on that.

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PR Comment: https://git.openjdk.org/jdk/pull/17198#issuecomment-2225563522