StubRoutines blobs bundle many individually-named stubs into a single BufferBlob, so perf profiles previously attributed all samples inside those blobs to the enclosing blob name (e.g. "StubRoutines (compiler stubs)"). Walk the StubCodeDesc list and emit a line per descriptor, so perf can name the actual stub.
--------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - 8383709: Linux perf map should record individual stubs Changes: https://git.openjdk.org/jdk/pull/31007/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=31007&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8383709 Stats: 28 lines in 2 files changed: 27 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/31007.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/31007/head:pull/31007 PR: https://git.openjdk.org/jdk/pull/31007
