src/hotspot/share/runtime/objectMonitor.cpp

rev 51780 : imported patch syncknobs-00-base
rev 51781 : imported patch syncknobs-01-Knob_ReportSettings

*** 106,116 ****
  int ObjectMonitor::Knob_Verbose      = 0;
  int ObjectMonitor::Knob_VerifyInUse  = 0;
  int ObjectMonitor::Knob_VerifyMatch  = 0;
  int ObjectMonitor::Knob_SpinLimit    = 5000;    // derived by an external tool -
  
- static int Knob_ReportSettings      = 0;
  static int Knob_SpinBase            = 0;       // Floor AKA SpinMin
  static int Knob_SpinBackOff         = 0;       // spin-loop backoff
  static int Knob_CASPenalty          = -1;      // Penalty for failed CAS
  static int Knob_OXPenalty           = -1;      // Penalty for observed _owner change
  static int Knob_SpinSetSucc         = 1;       // spinners set the _succ field
--- 106,115 ----
*** 2215,2227 ****
    // The initialization is idempotent, so we don't need locks.
    // In the future consider doing this via os::init_2().
  
    if (os::is_MP()) {
      BackOffMask = (1 << Knob_SpinBackOff) - 1;
-     if (Knob_ReportSettings) {
-       tty->print_cr("INFO: BackOffMask=0x%X", BackOffMask);
-     }
      // CONSIDER: BackOffMask = ROUNDUP_NEXT_POWER2 (ncpus-1)
    } else {
      Knob_SpinLimit = 0;
      Knob_SpinBase  = 0;
      Knob_PreSpin   = 0;
--- 2214,2223 ----