diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gpgpu-sim/gpu-cache.cc | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/src/gpgpu-sim/gpu-cache.cc b/src/gpgpu-sim/gpu-cache.cc index 63b5fc9..690657f 100644 --- a/src/gpgpu-sim/gpu-cache.cc +++ b/src/gpgpu-sim/gpu-cache.cc @@ -401,6 +401,11 @@ cache_request_status data_cache::wr_hit_wt(new_addr_type addr, unsigned cache_in if(miss_queue_full(0)) return RESERVATION_FAIL; // cannot handle request this cycle + new_addr_type block_addr = m_config.block_addr(addr); + m_tag_array.access(block_addr,time,cache_index); // update LRU state + cache_block_t &block = m_tag_array.get_block(cache_index); + block.m_status = MODIFIED; + // generate a write-through send_write_request(mf, WRITE_REQUEST_SENT, time, events); @@ -425,9 +430,9 @@ cache_request_status data_cache::wr_hit_we(new_addr_type addr, unsigned cache_in enum cache_request_status data_cache::wr_hit_global_we_local_wb(new_addr_type addr, unsigned cache_index, mem_fetch *mf, unsigned time, std::list<cache_event> &events ){ bool evict = (mf->get_access_type() == GLOBAL_ACC_W); // evict a line that hits on global memory write if(evict) - return wr_hit_wb(addr, cache_index, mf, time, events); + return wr_hit_we(addr, cache_index, mf, time, events); // Write-evict else - return wr_hit_we(addr, cache_index, mf, time, events); + return wr_hit_wb(addr, cache_index, mf, time, events); // Write-back } /****** Write-miss functions (Set by config file) ******/ @@ -471,7 +476,7 @@ enum cache_request_status data_cache::wr_miss_wa(new_addr_type addr, unsigned ca // Send read request resulting from write miss send_read_request(addr, block_addr, cache_index, n_mf, time, do_miss, wb, evicted, events, false, true); - if( wb ) { // If evicted block is modified + if( wb && (m_config.m_write_policy != WRITE_THROUGH) ) { // If evicted block is modified and not a write-through (already modified lower level) mem_fetch *wb = m_memfetch_creator->alloc(evicted.m_block_addr,L2_WRBK_ACC,m_config.get_line_sz(),true); m_miss_queue.push_back(wb); wb->set_status(m_miss_queue_status,time); @@ -519,7 +524,7 @@ enum cache_request_status data_cache::rd_miss_base(new_addr_type addr, unsigned cache_block_t evicted; send_read_request(addr, block_addr, cache_index, mf, time, do_miss, wb, evicted, events, false, false); - if(wb){ + if(wb && (m_config.m_write_policy != WRITE_THROUGH) ){ // If evicted block is modified and not a write-through (already modified lower level) mem_fetch *wb = m_memfetch_creator->alloc(evicted.m_block_addr, L1_WRBK_ACC,m_config.get_line_sz(),true); send_write_request(wb, WRITE_BACK_REQUEST_SENT, time, events); } |