1 files changed, 3 insertions, 0 deletions
diff --git a/src/mem/bus.cc b/src/mem/bus.cc
index ab8b76594..583e60a15 100644
--- a/src/mem/bus.cc
+++ b/src/mem/bus.cc
@@ -52,6 +52,7 @@
 #include "base/trace.hh"
 #include "debug/Bus.hh"
 #include "debug/BusAddrRanges.hh"
+#include "debug/Drain.hh"
 #include "mem/bus.hh"
 
 BaseBus::BaseBus(const BaseBusParams *p)
@@ -246,6 +247,7 @@ BaseBus::Layer<PortClass>::releaseLayer()
         // we see a retry from the destination
         retryWaiting();
     } else if (drainEvent) {
+        DPRINTF(Drain, "Bus done draining, processing drain event\n");
         //If we weren't able to drain before, do it now.
         drainEvent->process();
         // Clear the drain event once we're done with it.
@@ -498,6 +500,7 @@ BaseBus::Layer<PortClass>::drain(Event * de)
     //waiting. We might be idle but have someone waiting if the device we
     //contacted for a retry didn't actually retry.
     if (!retryList.empty() || state != IDLE) {
+        DPRINTF(Drain, "Bus not drained\n");
         drainEvent = de;
         return 1;
     }