*** old/src/share/vm/gc_implementation/parNew/parNewGeneration.cpp	Fri Dec 21 12:59:44 2012
--- new/src/share/vm/gc_implementation/parNew/parNewGeneration.cpp	Fri Dec 21 12:59:44 2012

*** 1623,1629 ****
--- 1623,1629 ----
  const char* ParNewGeneration::name() const {
    return "par new generation";
  }
  
  bool ParNewGeneration::in_use() {
-   return UseParNewGC && ParallelGCThreads > 0;
  }