diff options
author | Daniel R. Carvalho <odanrc@yahoo.com.br> | 2018-03-09 15:04:20 +0100 |
---|---|---|
committer | Daniel Carvalho <odanrc@yahoo.com.br> | 2018-10-10 18:17:42 +0000 |
commit | d204e56b2b9b8ad561fc258ebdc50ae8365159e1 (patch) | |
tree | 52783a7a32db7d055cb85e5454e6512c22cb2b1c /src/mem/cache/tags/base.hh | |
parent | 99a6c94e58b6375c0d524530cab2a27b6ea0f2bc (diff) | |
download | gem5-d204e56b2b9b8ad561fc258ebdc50ae8365159e1.tar.xz |
mem-cache: Use possible locations to find block
Use possible locations to find block to make it placement policy
independent.
Change-Id: I4c9d9e1e1ff91ce12e85ca1970f927d8f4f5a93b
Reviewed-on: https://gem5-review.googlesource.com/c/8884
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Diffstat (limited to 'src/mem/cache/tags/base.hh')
-rw-r--r-- | src/mem/cache/tags/base.hh | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/mem/cache/tags/base.hh b/src/mem/cache/tags/base.hh index 385d25c9f..7badc46c2 100644 --- a/src/mem/cache/tags/base.hh +++ b/src/mem/cache/tags/base.hh @@ -161,6 +161,18 @@ class BaseTags : public ClockedObject */ void setCache(BaseCache *_cache); + /** + * Find all possible block locations for insertion and replacement of + * an address. Should be called immediately before ReplacementPolicy's + * findVictim() not to break cache resizing. + * Returns blocks in all ways belonging to the set of the address. + * + * @param addr The addr to a find possible locations for. + * @return The possible locations. + */ + virtual std::vector<ReplaceableEntry*> getPossibleLocations( + const Addr addr) const; + public: typedef BaseTagsParams Params; BaseTags(const Params *p); @@ -199,9 +211,13 @@ class BaseTags : public ClockedObject std::string print(); /** - * Find a block using the memory address + * Finds the block in the cache without touching it. + * + * @param addr The address to look for. + * @param is_secure True if the target memory space is secure. + * @return Pointer to the cache block. */ - virtual CacheBlk * findBlock(Addr addr, bool is_secure) const = 0; + virtual CacheBlk *findBlock(Addr addr, bool is_secure) const; /** * Find a block given set and way. |