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author | Ali Saidi <Ali.Saidi@ARM.com> | 2010-10-01 16:04:04 -0500 |
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committer | Ali Saidi <Ali.Saidi@ARM.com> | 2010-10-01 16:04:04 -0500 |
commit | dcaa0668ae2c243158fbc886e81e6a6b0e451c83 (patch) | |
tree | 1d43518c50c4b9af500563aabae948ef7f937d13 /src/arch/arm/tlb.hh | |
parent | f0c0b8a7f613758cc99af827cfc0bb7d4587131e (diff) | |
download | gem5-dcaa0668ae2c243158fbc886e81e6a6b0e451c83.tar.xz |
ARM: Make the TLB a little bit faster by moving most recently used items to front of list
Diffstat (limited to 'src/arch/arm/tlb.hh')
-rw-r--r-- | src/arch/arm/tlb.hh | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/src/arch/arm/tlb.hh b/src/arch/arm/tlb.hh index caccad873..2d3661f7d 100644 --- a/src/arch/arm/tlb.hh +++ b/src/arch/arm/tlb.hh @@ -88,7 +88,6 @@ class TLB : public BaseTLB TlbEntry *table; // the Page Table int size; // TLB Size - int nlu; // not last used entry (for replacement) uint32_t _attr; // Memory attributes for last accessed TLB entry @@ -96,7 +95,6 @@ class TLB : public BaseTLB TableWalker *tableWalker; #endif - void nextnlu() { if (++nlu >= size) nlu = 0; } /** Lookup an entry in the TLB * @param vpn virtual address * @param asn context id/address space id to use @@ -118,6 +116,7 @@ class TLB : public BaseTLB Stats::Formula misses; Stats::Formula accesses; + int rangeMRU; //On lookup, only move entries ahead when outside rangeMRU public: typedef ArmTLBParams Params; |