--perf_instrument parameter now has int type and 0, 1, 2 modes (1 - simple trees, 2 - expanded trees for functions with same name but different calling address);

Maximum depth limit var was added to the instrumentation structure;

Trace names output console output fix: improper tree formatting could happen;
Output in case of error was added;

Custom regions improvements;

Improved timing and weight calculation for parallel regions; New TC (threads counter) value to indicate how many different threads accessed particular node;

parallel_for, warnings fixes and ReturnAddress code from Alexander Alekhin;

modules/core/src/dxt.cpp

@@ -1564,8 +1564,6 @@ public:
 
     virtual void operator()(const Range& range) const
     {
-        CV_INSTRUMENT_REGION_IPP();
-
         IppStatus status;
         Ipp8u* pBuffer = 0;
         Ipp8u* pMemInit= 0;
@@ -1647,8 +1645,6 @@ public:
 
     virtual void operator()(const Range& range) const
     {
-        CV_INSTRUMENT_REGION_IPP();
-
         IppStatus status;
         Ipp8u* pBuffer = 0;
         Ipp8u* pMemInit= 0;
@@ -3809,8 +3805,6 @@ public:
 
     virtual void operator()(const Range& range) const
     {
-        CV_INSTRUMENT_REGION_IPP()
-
         if(*ok == false)
             return;