mem-cache: Factor out multiple block eviction

Create a function to try to evict multiple blocks while checking for
transient state.

Change-Id: I6a879fa5e793cd92c4bdf4a258a133de4c865012
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22607
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/mem/cache/base.hh b/src/mem/cache/base.hh
index cd467c8ad..8e5c18c11 100644
--- a/src/mem/cache/base.hh
+++ b/src/mem/cache/base.hh
@@ -710,6 +710,18 @@ class BaseCache : public ClockedObject
     void maintainClusivity(bool from_cache, CacheBlk *blk);
 
     /**
+     * Try to evict the given blocks. If any of them is a transient eviction,
+     * that is, the block is present in the MSHR queue all evictions are
+     * cancelled since handling such cases has not been implemented.
+     *
+     * @param evict_blks Blocks marked for eviction.
+     * @param writebacks List for any writebacks that need to be performed.
+     * @return False if any of the evicted blocks is in transient state.
+     */
+    bool handleEvictions(std::vector<CacheBlk*> &evict_blks,
+        PacketList &writebacks);
+
+    /**
      * Handle a fill operation caused by a received packet.
      *
      * Populates a cache block and handles all outstanding requests for the