RFR: 8322420: [Linux] cgroup v2: Limits in parent nested control groups are not detected [v20]

[Jan Kratochvil]

On Wed, 14 Aug 2024 15:55:53 GMT, Severin Gehwolf <sgehwolf at openjdk.org> wrote:

>> Jan Kratochvil has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Testcase update upon review by Severin Gehwolf
>
> test/hotspot/jtreg/containers/cgroup/NestedCgroup.java line 139:
> 
>> 137:             } else {
>> 138:               throw new IllegalArgumentException();
>> 139:             }
> 
> This can be done once in `NestedCgroup.main` and then passed in on instantiation of `Test*` classes.

It cannot because jdk.internal.platform.Metrics is JDK-private and it must be exported by jtreg `@modules java.base/jdk.internal.platform`. And this jtreg export does not work for the newly spawned Java as I cannot replicate the jtreg commandline, I haven't found it in system properties.

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PR Review Comment: https://git.openjdk.org/jdk/pull/17198#discussion_r1720605769