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| author | David Hashe <david.hashe@amd.com> | 2015-07-20 09:15:18 -0500 |
|---|---|---|
| committer | David Hashe <david.hashe@amd.com> | 2015-07-20 09:15:18 -0500 |
| commit | 7e9562013b1592c5cc402c43ee1d21025f375a71 (patch) | |
| tree | 3e14882024790d898404eb246d37fa51051c4f8f /src/mem | |
| parent | 7e00772bda1a1c74fe659c56fea803642302c1da (diff) | |
| download | gem5-7e9562013b1592c5cc402c43ee1d21025f375a71.tar.xz | |
ruby: allocate a block in CacheMemory without updating LRU state
Diffstat (limited to 'src/mem')
| -rw-r--r-- | src/mem/protocol/RubySlicc_Types.sm | 1 | ||||
| -rw-r--r-- | src/mem/ruby/structures/CacheMemory.cc | 6 | ||||
| -rw-r--r-- | src/mem/ruby/structures/CacheMemory.hh | 10 |
3 files changed, 13 insertions, 4 deletions
diff --git a/src/mem/protocol/RubySlicc_Types.sm b/src/mem/protocol/RubySlicc_Types.sm index 51f99b603..6c3c4168d 100644 --- a/src/mem/protocol/RubySlicc_Types.sm +++ b/src/mem/protocol/RubySlicc_Types.sm @@ -146,6 +146,7 @@ structure (CacheMemory, external = "yes") { bool cacheAvail(Address); Address cacheProbe(Address); AbstractCacheEntry allocate(Address, AbstractCacheEntry); + AbstractCacheEntry allocate(Address, AbstractCacheEntry, bool); void allocateVoid(Address, AbstractCacheEntry); void deallocate(Address); AbstractCacheEntry lookup(Address); diff --git a/src/mem/ruby/structures/CacheMemory.cc b/src/mem/ruby/structures/CacheMemory.cc index 486b5ae97..c802d8fb6 100644 --- a/src/mem/ruby/structures/CacheMemory.cc +++ b/src/mem/ruby/structures/CacheMemory.cc @@ -251,7 +251,7 @@ CacheMemory::cacheAvail(const Address& address) const } AbstractCacheEntry* -CacheMemory::allocate(const Address& address, AbstractCacheEntry* entry) +CacheMemory::allocate(const Address& address, AbstractCacheEntry* entry, bool touch) { assert(address == line_address(address)); assert(!isTagPresent(address)); @@ -271,7 +271,9 @@ CacheMemory::allocate(const Address& address, AbstractCacheEntry* entry) set[i]->m_locked = -1; m_tag_index[address] = i; - m_replacementPolicy_ptr->touch(cacheSet, i, curTick()); + if (touch) { + m_replacementPolicy_ptr->touch(cacheSet, i, curTick()); + } return entry; } diff --git a/src/mem/ruby/structures/CacheMemory.hh b/src/mem/ruby/structures/CacheMemory.hh index 82bb65776..c9c20d8b8 100644 --- a/src/mem/ruby/structures/CacheMemory.hh +++ b/src/mem/ruby/structures/CacheMemory.hh @@ -74,10 +74,16 @@ class CacheMemory : public SimObject bool cacheAvail(const Address& address) const; // find an unused entry and sets the tag appropriate for the address - AbstractCacheEntry* allocate(const Address& address, AbstractCacheEntry* new_entry); + AbstractCacheEntry* allocate(const Address& address, + AbstractCacheEntry* new_entry, bool touch); + AbstractCacheEntry* allocate(const Address& address, + AbstractCacheEntry* new_entry) + { + return allocate(address, new_entry, true); + } void allocateVoid(const Address& address, AbstractCacheEntry* new_entry) { - allocate(address, new_entry); + allocate(address, new_entry, true); } // Explicitly free up this address |