hg: jdk-updates/jdk11u-dev: 8248214: Add paddings for TaskQueueSuper to reduce false-sharing cache contention

[goetz.lindenmaier at sap.com]

Changeset: 08c734477683
Author:    qpzhang
Date:      2020-06-16 23:15 +0800
URL:       https://hg.openjdk.java.net/jdk-updates/jdk11u-dev/rev/08c734477683

8248214: Add paddings for TaskQueueSuper to reduce false-sharing cache contention
Summary: This is a downport of a part of JDK-8243326
Reviewed-by: goetz, clanger

! src/hotspot/share/gc/shared/taskqueue.hpp