From e0074324bacf500f9d0cc11ebc6e2f29bf3d8ba1 Mon Sep 17 00:00:00 2001
From: Andreas Sandberg <Andreas.Sandberg@ARM.com>
Date: Thu, 16 Oct 2014 05:49:41 -0400
Subject: cpu: Probe points for basic PMU stats

This changeset adds probe points that can be used to implement PMU
counters for CPU stats. The following probes are supported:

  * BaseCPU::ppCycles / Cycles
  * BaseCPU::ppRetiredInsts / RetiredInsts
  * BaseCPU::ppRetiredLoads / RetiredLoads
  * BaseCPU::ppRetiredStores / RetiredStores
  * BaseCPU::ppRetiredBranches RetiredBranches
---
 src/cpu/simple/atomic.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'src/cpu/simple/atomic.cc')

diff --git a/src/cpu/simple/atomic.cc b/src/cpu/simple/atomic.cc
index 5af3854e7..d6dbb9292 100644
--- a/src/cpu/simple/atomic.cc
+++ b/src/cpu/simple/atomic.cc
@@ -233,7 +233,9 @@ AtomicSimpleCPU::activateContext(ThreadID thread_num)
     assert(!tickEvent.scheduled());
 
     notIdleFraction = 1;
-    numCycles += ticksToCycles(thread->lastActivate - thread->lastSuspend);
+    Cycles delta = ticksToCycles(thread->lastActivate - thread->lastSuspend);
+    numCycles += delta;
+    ppCycles->notify(delta);
 
     //Make sure ticks are still on multiples of cycles
     schedule(tickEvent, clockEdge(Cycles(0)));
@@ -501,6 +503,7 @@ AtomicSimpleCPU::tick()
 
     for (int i = 0; i < width || locked; ++i) {
         numCycles++;
+        ppCycles->notify(1);
 
         if (!curStaticInst || !curStaticInst->isDelayedCommit())
             checkForInterrupts();
@@ -614,6 +617,8 @@ AtomicSimpleCPU::tick()
 void
 AtomicSimpleCPU::regProbePoints()
 {
+    BaseCPU::regProbePoints();
+
     ppCommit = new ProbePointArg<pair<SimpleThread*, const StaticInstPtr>>
                                 (getProbeManager(), "Commit");
 }
-- 
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