diff options
Diffstat (limited to 'src/mem/cache/prefetch/base.cc')
| -rw-r--r-- | src/mem/cache/prefetch/base.cc | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/mem/cache/prefetch/base.cc b/src/mem/cache/prefetch/base.cc index e58d4f3d5..cd3eade09 100644 --- a/src/mem/cache/prefetch/base.cc +++ b/src/mem/cache/prefetch/base.cc @@ -81,7 +81,8 @@ BasePrefetcher::BasePrefetcher(const BasePrefetcherParams *p) onWrite(p->on_write), onData(p->on_data), onInst(p->on_inst), masterId(p->sys->getMasterId(this)), pageBytes(p->sys->getPageBytes()), prefetchOnAccess(p->prefetch_on_access), - useVirtualAddresses(p->use_virtual_addresses) + useVirtualAddresses(p->use_virtual_addresses), issuedPrefetches(0), + usefulPrefetches(0) { } @@ -146,6 +147,12 @@ BasePrefetcher::inMissQueue(Addr addr, bool is_secure) const } bool +BasePrefetcher::hasBeenPrefetched(Addr addr, bool is_secure) const +{ + return cache->hasBeenPrefetched(addr, is_secure); +} + +bool BasePrefetcher::samePage(Addr a, Addr b) const { return roundDown(a, pageBytes) == roundDown(b, pageBytes); @@ -190,6 +197,10 @@ BasePrefetcher::probeNotify(const PacketPtr &pkt) if (pkt->req->isCacheMaintenance()) return; if (pkt->isWrite() && cache != nullptr && cache->coalesce()) return; + if (hasBeenPrefetched(pkt->getAddr(), pkt->isSecure())) { + usefulPrefetches += 1; + } + // Verify this access type is observed by prefetcher if (observeAccess(pkt)) { if (useVirtualAddresses && pkt->req->hasVaddr()) { |