From f3decab7d0e232833857aaee5bb929c5e21c735c Mon Sep 17 00:00:00 2001
Date: Fri, 22 Jan 2021 16:18:19 +0800
Subject: Add a switch for the dynamic thread related log

Summary: <gc>: Add a switch for the dynamic thread related log
LLT: hotspot/test/gc/ergonomics/TestDynamicNumberOfGCThreads.java
Bug url: https://bugs.openjdk.java.net/browse/JDK-6858051
---
 .../share/vm/gc_implementation/shared/workerManager.hpp   | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/hotspot/src/share/vm/gc_implementation/shared/workerManager.hpp b/hotspot/src/share/vm/gc_implementation/shared/workerManager.hpp
index 1a840cf2b..d48d60f3e 100644
--- a/hotspot/src/share/vm/gc_implementation/shared/workerManager.hpp
+++ b/hotspot/src/share/vm/gc_implementation/shared/workerManager.hpp
@@ -67,9 +67,11 @@ class WorkerManager : public AllStatic {
       os::start_thread(new_worker);
     }
 
-    gclog_or_tty->print_cr("AdaptiveSizePolicy::add_workers() : "
-       "active_workers: %u created_workers: %u",
-       active_workers, created_workers);
+    if (TraceDynamicGCThreads) {
+      gclog_or_tty->print_cr("AdaptiveSizePolicy::add_workers() : "
+         "active_workers: %u created_workers: %u",
+         active_workers, created_workers);
+    }
 
     return created_workers;
   }
-- 
2.19.0