RFR: 8342818: Implement JEP 509: JFR CPU-Time Profiling [v5]

[Erik Gahlin]

On Sun, 25 May 2025 20:48:55 GMT, Johannes Bechberger <jbechberger at openjdk.org> wrote:

> How long the stack walking took. But it's probably irrelevant with the new design.

It will probably confuse user more than help them.

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PR Review Comment: https://git.openjdk.org/jdk/pull/25302#discussion_r2106313187