sim: Enable sampling of run-time for code-sections marked using pseudo insts.

This patch adds a mechanism to collect run time samples for specific portions
of a benchmark, using work_begin and work_end pseudo instructions.It also enhances
the histogram stat to report geometric mean.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/sim/pseudo_inst.cc b/src/sim/pseudo_inst.cc
index 2062dfb8c..647420ca1 100644
--- a/src/sim/pseudo_inst.cc
+++ b/src/sim/pseudo_inst.cc
@@ -383,6 +383,7 @@ workbegin(ThreadContext *tc, uint64_t workid, uint64_t threadid)
     tc->getCpuPtr()->workItemBegin();
     System *sys = tc->getSystemPtr();
     const System::Params *params = sys->params();
+    sys->workItemBegin(threadid, workid);
 
     DPRINTF(WorkItems, "Work Begin workid: %d, threadid %d\n", workid, 
             threadid);
@@ -439,6 +440,7 @@ workend(ThreadContext *tc, uint64_t workid, uint64_t threadid)
     tc->getCpuPtr()->workItemEnd();
     System *sys = tc->getSystemPtr();
     const System::Params *params = sys->params();
+    sys->workItemEnd(threadid, workid);
 
     DPRINTF(WorkItems, "Work End workid: %d, threadid %d\n", workid, threadid);