mem-cache: Remove writebacks parameter from serviceMSHRTargets

Change 8ba77ae8fc introduced the
writebacks parameter, but it was never used.

Change-Id: I225e5b399de42d77c72fc0012d3dc93ef39b8853
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/14896
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>

src/mem/cache/base.cc

@@ -498,7 +498,7 @@ BaseCache::recvTimingResp(PacketPtr pkt)
         mshr->promoteWritable();
     }
 
-    serviceMSHRTargets(mshr, pkt, blk, writebacks);
+    serviceMSHRTargets(mshr, pkt, blk);
 
     if (mshr->promoteDeferredTargets()) {
         // avoid later read getting stale data while write miss is

src/mem/cache/base.hh

@@ -495,16 +495,14 @@ class BaseCache : public MemObject
      * Service non-deferred MSHR targets using the received response
      *
      * Iterates through the list of targets that can be serviced with
-     * the current response. Any writebacks that need to performed
-     * must be appended to the writebacks parameter.
+     * the current response.
      *
      * @param mshr The MSHR that corresponds to the reponse
      * @param pkt The response packet
      * @param blk The reference block
-     * @param writebacks List of writebacks that need to be performed
      */
     virtual void serviceMSHRTargets(MSHR *mshr, const PacketPtr pkt,
-                                    CacheBlk *blk, PacketList& writebacks) = 0;
+                                    CacheBlk *blk) = 0;
 
     /**
      * Handles a response (cache line fill/write ack) from the bus.

src/mem/cache/cache.cc

@@ -685,8 +685,7 @@ Cache::recvAtomic(PacketPtr pkt)
 
 
 void
-Cache::serviceMSHRTargets(MSHR *mshr, const PacketPtr pkt, CacheBlk *blk,
-                          PacketList &writebacks)
+Cache::serviceMSHRTargets(MSHR *mshr, const PacketPtr pkt, CacheBlk *blk)
 {
     MSHR::Target *initial_tgt = mshr->getTarget();
     // First offset for critical word first calculations

src/mem/cache/cache.hh

@@ -103,8 +103,8 @@ class Cache : public BaseCache
 
     void doWritebacksAtomic(PacketList& writebacks) override;
 
-    void serviceMSHRTargets(MSHR *mshr, const PacketPtr pkt, CacheBlk *blk,
-                            PacketList& writebacks) override;
+    void serviceMSHRTargets(MSHR *mshr, const PacketPtr pkt,
+                            CacheBlk *blk) override;
 
     void recvTimingSnoopReq(PacketPtr pkt) override;
 

src/mem/cache/noncoherent_cache.cc

@@ -243,7 +243,7 @@ NoncoherentCache::functionalAccess(PacketPtr pkt, bool from_cpu_side)
 
 void
 NoncoherentCache::serviceMSHRTargets(MSHR *mshr, const PacketPtr pkt,
-                                     CacheBlk *blk, PacketList &writebacks)
+                                     CacheBlk *blk)
 {
     MSHR::Target *initial_tgt = mshr->getTarget();
     // First offset for critical word first calculations

src/mem/cache/noncoherent_cache.hh

@@ -86,7 +86,7 @@ class NoncoherentCache : public BaseCache
     void doWritebacksAtomic(PacketList& writebacks) override;
 
     void serviceMSHRTargets(MSHR *mshr, const PacketPtr pkt,
-                            CacheBlk *blk, PacketList& writebacks) override;
+                            CacheBlk *blk) override;
 
     void recvTimingResp(PacketPtr pkt) override;