diff options
Diffstat (limited to 'src/mem/cache/mshr.hh')
-rw-r--r-- | src/mem/cache/mshr.hh | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/src/mem/cache/mshr.hh b/src/mem/cache/mshr.hh index 5fe0fb92d..b4bf33a4f 100644 --- a/src/mem/cache/mshr.hh +++ b/src/mem/cache/mshr.hh @@ -162,6 +162,11 @@ class MSHR : public QueueEntry, public Printable bool hasUpgrade; /** Set when the response should allocate on fill */ bool allocOnFill; + /** + * Determine whether there was at least one non-snooping + * target coming from another cache. + */ + bool hasFromCache; TargetList(); @@ -176,7 +181,12 @@ class MSHR : public QueueEntry, public Printable void updateFlags(PacketPtr pkt, Target::Source source, bool alloc_on_fill); - void resetFlags() { needsWritable = hasUpgrade = allocOnFill = false; } + void resetFlags() { + needsWritable = false; + hasUpgrade = false; + allocOnFill = false; + hasFromCache = false; + } /** * Goes through the list of targets and uses them to populate @@ -191,7 +201,8 @@ class MSHR : public QueueEntry, public Printable * values. */ bool isReset() const { - return !needsWritable && !hasUpgrade && !allocOnFill; + return !needsWritable && !hasUpgrade && !allocOnFill && + !hasFromCache; } /** @@ -257,6 +268,16 @@ class MSHR : public QueueEntry, public Printable bool allocOnFill() const { return targets.allocOnFill; } + + /** + * Determine if there are non-deferred requests from other caches + * + * @return true if any of the targets is from another cache + */ + bool hasFromCache() const { + return targets.hasFromCache; + } + private: /** |