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| author | Andreas Sandberg <Andreas.Sandberg@arm.com> | 2012-11-02 11:32:02 -0500 |
|---|---|---|
| committer | Andreas Sandberg <Andreas.Sandberg@arm.com> | 2012-11-02 11:32:02 -0500 |
| commit | ddd6af414cdd4939f4ff382f0e83e7dfa695781d (patch) | |
| tree | 5149831ec4714dea40a550665ba87e1299d4485a /src/mem/cache/base.cc | |
| parent | 050f24c7964cbe65633261e431e1105d1d5e8070 (diff) | |
| download | gem5-ddd6af414cdd4939f4ff382f0e83e7dfa695781d.tar.xz | |
mem: Add support for writing back and flushing caches
This patch adds support for the following optional drain methods in
the classical memory system's cache model:
memWriteback() - Write back all dirty cache lines to memory using
functional accesses.
memInvalidate() - Invalidate all cache lines. Dirty cache lines
are lost unless a writeback is requested.
Since memWriteback() is called when checkpointing systems, this patch
adds support for checkpointing systems with caches. The serialization
code now checks whether there are any dirty lines in the cache. If
there are dirty lines in the cache, the checkpoint is flagged as bad
and a warning is printed.
Diffstat (limited to 'src/mem/cache/base.cc')
| -rw-r--r-- | src/mem/cache/base.cc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mem/cache/base.cc b/src/mem/cache/base.cc index ad1c751bc..262573663 100644 --- a/src/mem/cache/base.cc +++ b/src/mem/cache/base.cc @@ -751,7 +751,8 @@ BaseCache::regStats() unsigned int BaseCache::drain(DrainManager *dm) { - int count = memSidePort->drain(dm) + cpuSidePort->drain(dm); + int count = memSidePort->drain(dm) + cpuSidePort->drain(dm) + + mshrQueue.drain(dm) + writeBuffer.drain(dm); // Set status if (count != 0) { |