xref: /gem5/src/mem/cache/tags/base.cc

/*
 * Copyright (c) 2003-2005 The Regents of The University of Michigan
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Authors: Erik Hallnor
 *          Ron Dreslinski
 */

/**
 * @file
 * Definitions of BaseTags.
 */

#include "mem/cache/tags/base.hh"

#include "mem/cache/base.hh"
#include "cpu/smt.hh" //maxThreadsPerCPU
#include "sim/sim_exit.hh"

using namespace std;

void
BaseTags::setCache(BaseCache *_cache)
{
    cache = _cache;
    objName = cache->name();
}

void
BaseTags::regStats(const string &name)
{
    using namespace Stats;
    replacements
        .init(maxThreadsPerCPU)
        .name(name + ".replacements")
        .desc("number of replacements")
        .flags(total)
        ;

    tagsInUse
        .name(name + ".tagsinuse")
        .desc("Cycle average of tags in use")
        ;

    totalRefs
        .name(name + ".total_refs")
        .desc("Total number of references to valid blocks.")
        ;

    sampledRefs
        .name(name + ".sampled_refs")
        .desc("Sample count of references to valid blocks.")
        ;

    avgRefs
        .name(name + ".avg_refs")
        .desc("Average number of references to valid blocks.")
        ;

    avgRefs = totalRefs/sampledRefs;

    warmupCycle
        .name(name + ".warmup_cycle")
        .desc("Cycle when the warmup percentage was hit.")
        ;

    occupancies
        .init(cache->numCpus())
        .name(name + ".occ_blocks")
        .desc("Average occupied blocks per context")
        .flags(nozero | nonan)
        ;

    avgOccs
        .name(name + ".occ_%")
        .desc("Average percentage of cache occupancy")
        .flags(nozero)
        ;

    avgOccs = occupancies / Stats::constant(numBlocks);

    registerExitCallback(new BaseTagsCallback(this));
}