diff options
Diffstat (limited to 'src/mem/cache/tags/lru.cc')
-rw-r--r-- | src/mem/cache/tags/lru.cc | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/mem/cache/tags/lru.cc b/src/mem/cache/tags/lru.cc index db0cc0839..6b05744af 100644 --- a/src/mem/cache/tags/lru.cc +++ b/src/mem/cache/tags/lru.cc @@ -176,6 +176,7 @@ LRU::insertBlock(PacketPtr pkt, BlkType *blk) { Addr addr = pkt->getAddr(); MasterID master_id = pkt->req->masterId(); + uint32_t task_id = pkt->req->taskId(); if (!blk->isTouched) { tagsInUse++; blk->isTouched = true; @@ -210,6 +211,8 @@ LRU::insertBlock(PacketPtr pkt, BlkType *blk) assert(master_id < cache->system->maxMasters()); occupancies[master_id]++; blk->srcMasterId = master_id; + blk->task_id = task_id; + blk->tickInserted = curTick(); unsigned set = extractSet(addr); sets[set].moveToHead(blk); @@ -224,6 +227,8 @@ LRU::invalidate(BlkType *blk) assert(blk->srcMasterId < cache->system->maxMasters()); occupancies[blk->srcMasterId]--; blk->srcMasterId = Request::invldMasterId; + blk->task_id = ContextSwitchTaskId::Unknown; + blk->tickInserted = curTick(); // should be evicted before valid blocks unsigned set = blk->set; @@ -270,3 +275,38 @@ LRU::cleanupRefs() } } } + +void +LRU::computeStats() +{ + for (unsigned i = 0; i < ContextSwitchTaskId::NumTaskId; ++i) { + occupanciesTaskId[i] = 0; + for (unsigned j = 0; j < 5; ++j) { + ageTaskId[i][j] = 0; + } + } + + for (unsigned i = 0; i < numSets * assoc; ++i) { + if (blks[i].isValid()) { + assert(blks[i].task_id < ContextSwitchTaskId::NumTaskId); + occupanciesTaskId[blks[i].task_id]++; + Tick age = curTick() - blks[i].tickInserted; + assert(age >= 0); + + int age_index; + if (age / SimClock::Int::us < 10) { // <10us + age_index = 0; + } else if (age / SimClock::Int::us < 100) { // <100us + age_index = 1; + } else if (age / SimClock::Int::ms < 1) { // <1ms + age_index = 2; + } else if (age / SimClock::Int::ms < 10) { // <10ms + age_index = 3; + } else + age_index = 4; // >10ms + + ageTaskId[blks[i].task_id][age_index]++; + } + } +} + |