[jdk17u] RFR: 8274521: jdk/jfr/event/gc/detailed/TestGCLockerEvent.java fails when other GC is selected

[Aleksey Shipilev]

On Fri, 12 Nov 2021 08:50:27 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Clean backport to improve testing.
> 
> Additional testing:
>  - [x] Linux x86_64 fastdebug, affected test still passes (default)
>  - [x] Linux x86_64 fastdebug, affected test still passes (G1)
>  - [x] Linux x86_64 fastdebug, affected test is now ignored (Shenandoah)

Got the push approval.

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PR: https://git.openjdk.java.net/jdk17u/pull/256