[gem5-dev] changeset in gem5: ruby: improved stall and wait debugging

[Brad Beckmann]

changeset 4fbe4b0adb4d in /z/repo/gem5
details: http://repo.gem5.org/gem5?cmd=changeset;node=4fbe4b0adb4d
description:
        ruby: improved stall and wait debugging

        Added dprintfs and asserts for identifying stall and wait bugs.

diffstat:

 src/mem/ruby/network/MessageBuffer.cc              |  2 +-
 src/mem/ruby/slicc_interface/AbstractController.cc |  7 ++++++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diffs (37 lines):

diff -r d87a25259254 -r 4fbe4b0adb4d src/mem/ruby/network/MessageBuffer.cc
--- a/src/mem/ruby/network/MessageBuffer.cc     Mon Jul 20 09:15:18 2015 -0500
+++ b/src/mem/ruby/network/MessageBuffer.cc     Mon Jul 20 09:15:18 2015 -0500
@@ -295,7 +295,7 @@
 void
 MessageBuffer::reanalyzeMessages(const Address& addr)
 {
-    DPRINTF(RubyQueue, "ReanalyzeMessages\n");
+    DPRINTF(RubyQueue, "ReanalyzeMessages %s\n", addr);
     assert(m_stall_msg_map.count(addr) > 0);
     Tick curTick = m_receiver->clockEdge();
 
diff -r d87a25259254 -r 4fbe4b0adb4d 
src/mem/ruby/slicc_interface/AbstractController.cc
--- a/src/mem/ruby/slicc_interface/AbstractController.cc        Mon Jul 20 
09:15:18 2015 -0500
+++ b/src/mem/ruby/slicc_interface/AbstractController.cc        Mon Jul 20 
09:15:18 2015 -0500
@@ -26,8 +26,10 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include "mem/ruby/slicc_interface/AbstractController.hh"
+
+#include "debug/RubyQueue.hh"
 #include "mem/protocol/MemoryMsg.hh"
-#include "mem/ruby/slicc_interface/AbstractController.hh"
 #include "mem/ruby/system/Sequencer.hh"
 #include "mem/ruby/system/System.hh"
 #include "sim/system.hh"
@@ -103,6 +105,9 @@
         msgVec->resize(m_in_ports, NULL);
         m_waiting_buffers[addr] = msgVec;
     }
+    DPRINTF(RubyQueue, "stalling %s port %d addr %s\n", buf, m_cur_in_port,
+            addr);
+    assert(m_in_ports > m_cur_in_port);
     (*(m_waiting_buffers[addr]))[m_cur_in_port] = buf;
 }
 
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