[jdk21u-dev] RFR: 8322420: [Linux] cgroup v2: Limits in parent nested control groups are not detected [v3]

[Goetz Lindenmaier]

On Wed, 2 Jul 2025 13:32:35 GMT, Jan Kratochvil <jkratochvil at openjdk.org> wrote:

>> A patch 7 of 7 for: [[21u] Backport intention of 8322420: [Linux] cgroup v2: Limits in parent nested control groups are not detected](https://mail.openjdk.org/pipermail/jdk-updates-dev/2025-April/043206.html)
>> 
>> It has a patch dependency on PR 6 of 7: https://github.com/openjdk/jdk21u-dev/pull/1663
>> 
>> This backport is clean.
>> 
>> The whole patchset has been tested on CentOS-7.9 (for cgroup v1) and on Fedora 40 (for cgroup v2) for test/hotspot/jtreg/containers.
>
> Jan Kratochvil has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains nine commits:
> 
>  - Merge remote-tracking branch 'janjdk21u-dev/devmaster-cgroup2reduced123456b' into devmaster-cgroup2reduced123456-new
>  - 8322420: [Linux] cgroup v2: Limits in parent nested control groups are not detected
>    
>    Reviewed-by: stuefe, asmehra
>  - 8338236: Compile error in cgroup code on Linux when using clang
>    
>    Reviewed-by: mdoerr, sgehwolf
>  - 8331560: Refactor Hotspot container detection code so that subsystem delegates to controllers
>    
>    Reviewed-by: jsjolen, stuefe
>  - 8261242: [Linux] OSContainer::is_containerized() returns true when run outside a container
>    
>    Reviewed-by: stuefe, iklam
>  - src/java.base/linux/native/libjava/CgroupMetrics.c:42:(.text+0x11): undefined reference to `JVM_IsContainerized'
>     - a patch by Yuri Nesterenko
>  - 8333326: Linux Alpine build fails after 8302744
>    
>    Reviewed-by: sgehwolf, clanger, stuefe
>  - 8302744: Refactor Hotspot container detection code
>    
>    Reviewed-by: jsjolen, stuefe
>  - 8322420: [Linux] cgroup v2: Limits in parent nested control groups are not detected
>    
>    Reviewed-by: stuefe, asmehra

Hi @jankratochvil 
Can you please fix the pre-submit tests.
Can you please also do a dependent PR for the follow-up build issue?  We should submit them close after each other.

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PR Comment: https://git.openjdk.org/jdk21u-dev/pull/1664#issuecomment-3027926708