mem: Remove threadId from memory request class

In general, the ThreadID parameter is unnecessary in the memory system
as the ContextID is what is used for the purposes of locks/wakeups.
Since we allocate sequential ContextIDs for each thread on MT-enabled
CPUs, ThreadID is unnecessary as the CPUs can identify the requesting
thread through sideband info (SenderState / LSQ entries) or ContextID
offset from the base ContextID for a cpu.

This is a re-spin of 20264eb after the revert (bd1c6789) and includes
some fixes of that commit.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/cpu/trace/trace_cpu.cc b/src/cpu/trace/trace_cpu.cc
index d6aa9aaeb..e81a79818 100644
--- a/src/cpu/trace/trace_cpu.cc
+++ b/src/cpu/trace/trace_cpu.cc
@@ -627,7 +627,7 @@ TraceCPU::ElasticDataGen::executeMemReq(GraphNode* node_ptr)
     // Create a request and the packet containing request
     Request* req = new Request(node_ptr->physAddr, node_ptr->size,
                                node_ptr->flags, masterID, node_ptr->seqNum,
-                               ContextID(0), ThreadID(0));
+                               ContextID(0));
     req->setPC(node_ptr->pc);
     // If virtual address is valid, set the asid and virtual address fields
     // of the request.
@@ -1123,7 +1123,7 @@ TraceCPU::FixedRetryGen::send(Addr addr, unsigned size, const MemCmd& cmd,
     req->setPC(pc);
 
     // If this is not done it triggers assert in L1 cache for invalid contextId
-    req->setThreadContext(ContextID(0), ThreadID(0));
+    req->setContext(ContextID(0));
 
     // Embed it in a packet
     PacketPtr pkt = new Packet(req, cmd);