sim: Expose the current clock period as a stat

This patch adds observability to the clock period of the clock domains
by including it as a stat.

As a result of adding this, the regressions will be updated in a
separate patch.

1 files changed, 14 insertions, 0 deletions

diff --git a/src/sim/clock_domain.cc b/src/sim/clock_domain.cc
index ff96f2808..0d1836e83 100644
--- a/src/sim/clock_domain.cc
+++ b/src/sim/clock_domain.cc
@@ -49,6 +49,20 @@
 #include "sim/voltage_domain.hh"
 #include "sim/clocked_object.hh"
 
+void
+ClockDomain::regStats()
+{
+    using namespace Stats;
+
+    // Expose the current clock period as a stat for observability in
+    // the dumps
+    currentClock
+        .scalar(_clockPeriod)
+        .name(params()->name + ".clock")
+        .desc("Clock period in ticks")
+        ;
+}
+
 double
 ClockDomain::voltage() const
 {