fix the argument to m5.simulate() on a checkpoint.

src/sim/stat_control.cc:
    add curTick to reset stats printf.

--HG--
extra : convert_revision : da8cf5921e81b73f47d6831d539ca1fbdace3d1d

configs/example/fs.py

@@ -124,6 +124,9 @@ exit_event = m5.simulate(maxtick)
 
 while exit_event.getCause() == "checkpoint":
     m5.checkpoint(root, "cpt.%d")
-    exit_event = m5.simulate(maxtick - m5.curTick())
+    if maxtick == -1:
+        exit_event = m5.simulate(maxtick)
+    else:
+        exit_event = m5.simulate(maxtick - m5.curTick())
 
 print 'Exiting @ cycle', m5.curTick(), 'because', exit_event.getCause()

src/sim/stat_control.cc

@@ -186,7 +186,7 @@ StatEvent::process()
         DumpNow();
 
     if (flags & Stats::Reset) {
-        cprintf("Resetting stats!\n");
+        cprintf("Resetting stats at cycle %d!\n", curTick);
         reset();
     }