mem: Add deferred packet class to prefetcher

This patch removes the time field from the packet as it was only used
by the preftecher. Similar to the packet queue, the prefetcher now
wraps the packet in a deferred packet, which also has a tick
representing the absolute time when the packet should be sent.

1 files changed, 3 insertions, 6 deletions

diff --git a/src/mem/packet.hh b/src/mem/packet.hh
index 6d9e88b8f..181320850 100644
--- a/src/mem/packet.hh
+++ b/src/mem/packet.hh
@@ -329,8 +329,6 @@ class Packet : public Printable
     uint16_t bytesValidEnd;
 
   public:
-    /// Used to calculate latencies for each packet.
-    Tick time;
 
     /// The time at which the packet will be fully transmitted
     Tick finishTime;
@@ -585,7 +583,7 @@ class Packet : public Printable
         :  cmd(_cmd), req(_req), data(NULL),
            src(InvalidPortID), dest(InvalidPortID),
            bytesValidStart(0), bytesValidEnd(0),
-           time(curTick()), senderState(NULL)
+           senderState(NULL)
     {
         if (req->hasPaddr()) {
             addr = req->getPaddr();
@@ -606,7 +604,7 @@ class Packet : public Printable
         :  cmd(_cmd), req(_req), data(NULL),
            src(InvalidPortID), dest(InvalidPortID),
            bytesValidStart(0), bytesValidEnd(0),
-           time(curTick()), senderState(NULL)
+           senderState(NULL)
     {
         if (req->hasPaddr()) {
             addr = req->getPaddr() & ~(_blkSize - 1);
@@ -628,7 +626,7 @@ class Packet : public Printable
            data(pkt->flags.isSet(STATIC_DATA) ? pkt->data : NULL),
            addr(pkt->addr), size(pkt->size), src(pkt->src), dest(pkt->dest),
            bytesValidStart(pkt->bytesValidStart), bytesValidEnd(pkt->bytesValidEnd),
-           time(curTick()), senderState(pkt->senderState)
+           senderState(pkt->senderState)
     {
         if (!clearFlags)
             flags.set(pkt->flags & COPY_FLAGS);
@@ -665,7 +663,6 @@ class Packet : public Printable
         flags = 0;
         addr = req->getPaddr();
         size = req->getSize();
-        time = req->time();
 
         flags.set(VALID_ADDR|VALID_SIZE);
         deleteData();