git: openjdk/mobile: 8237261: Concurrent refinement activation threshold not updated for card counts

[duke]

Changeset: f779e495
Author:    Kim Barrett <kbarrett at openjdk.org>
Date:      2020-01-20 14:31:20 +0000
URL:       https://git.openjdk.java.net/mobile/commit/f779e495

8237261: Concurrent refinement activation threshold not updated for card counts

Fix special-case threshold calculation for primary refinement thread

Reviewed-by: tschatzl, sjohanss

! src/hotspot/share/gc/g1/g1ConcurrentRefine.cpp