Put lock logging behind DEBUG_LOCKCONTENTION preprocessor directive

src/sync.h

@@ -6,8 +6,11 @@
 #ifndef BITCOIN_SYNC_H
 #define BITCOIN_SYNC_H
 
+#ifdef DEBUG_LOCKCONTENTION
 #include <logging.h>
 #include <logging/timer.h>
+#endif
+
 #include <threadsafety.h>
 #include <util/macros.h>
 
@@ -136,8 +139,10 @@ private:
     void Enter(const char* pszName, const char* pszFile, int nLine)
     {
         EnterCritical(pszName, pszFile, nLine, Base::mutex());
+#ifdef DEBUG_LOCKCONTENTION
         if (Base::try_lock()) return;
         LOG_TIME_MICROS_WITH_CATEGORY(strprintf("lock contention %s, %s:%d", pszName, pszFile, nLine), BCLog::LOCK);
+#endif
         Base::lock();
     }