Originally only join controllers of form `cpu,cpuacct` would have been recognized. However, this fails if more controllers are joined at a certain path.
The proposed fix is to be sure to split join controllers on `,` and set the path accordingly. Otherwise, the Metrics system might be initialized due to some non-join controllers, yet the limits for join controllers wouldn't be detected. A test for this can be added once [JDK-8254001](https://bugs.openjdk.java.net/browse/JDK-8254001) has been implemented. Testing: - [x] jdk/submit - [x] container tests on Linux cgroups v1 system. Thoughts? ------------- Commit messages: - 8254854: [cgroups v1] Metric limits not properly detected on some join controller combinations Changes: https://git.openjdk.java.net/jdk/pull/809/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=809&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8254854 Stats: 36 lines in 1 file changed: 3 ins; 10 del; 23 mod Patch: https://git.openjdk.java.net/jdk/pull/809.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/809/head:pull/809 PR: https://git.openjdk.java.net/jdk/pull/809
