git: openjdk/jdk17u-dev: 8305670: Performance regression in LockSupport.unpark with lots of idle threads

[Goetz Lindenmaier]

Changeset: 504ec276
Author:    Goetz Lindenmaier <goetz at openjdk.org>
Date:      2023-07-23 08:43:12 +0000
URL:       https://git.openjdk.org/jdk17u-dev/commit/504ec27625e8d1d4884911f6e0f1d2d6c330c8cc

8305670: Performance regression in LockSupport.unpark with lots of idle threads

Reviewed-by: mdoerr
Backport-of: f030937a51b95dde33ce33537ee830153b2c3b56

! src/hotspot/share/prims/unsafe.cpp
! src/hotspot/share/runtime/threadSMR.cpp
! src/hotspot/share/runtime/threadSMR.hpp