Feasibility to backport new allocation event and event throttling to JDK 8,11

[Mukilesh Sethu]

Hey,

I could see new allocation event and event throttling was added recently(
https://github.com/openjdk/jdk/pull/1624). I was wondering if we could
backport these changes to JDK 8,11. I am just checking if there are any
concerns in backporting these changes to JDK 8,11 as it introduces new
event and new event functionality (throttling). From the initial look I
think backport should be trivial, please let me know what you think ?

Thanks,
Mukilesh