1/*
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2 * Copyright (c) 2013 ARM Limited
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2 * Copyright (c) 2013,2016 ARM Limited |
3 * All rights reserved. 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license 10 * terms below provided that you ensure that this notice is replicated 11 * unmodified and in its entirety in all distributions of the software, 12 * modified or unmodified, in source code or in binary form. 13 * 14 * Copyright (c) 2003-2005 The Regents of The University of Michigan 15 * All rights reserved. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions are 19 * met: redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer; 21 * redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution; 24 * neither the name of the copyright holders nor the names of its 25 * contributors may be used to endorse or promote products derived from 26 * this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39 * 40 * Authors: Erik Hallnor 41 * Ron Dreslinski 42 */ 43 44/** 45 * @file 46 * Definitions of BaseTags. 47 */ 48 49#include "mem/cache/tags/base.hh" 50 51#include "cpu/smt.hh" //maxThreadsPerCPU 52#include "mem/cache/base.hh" 53#include "sim/sim_exit.hh" 54 55using namespace std; 56 57BaseTags::BaseTags(const Params *p)
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58 : ClockedObject(p), blkSize(p->block_size), size(p->size),
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58 : ClockedObject(p), blkSize(p->block_size), blkMask(blkSize - 1), 59 size(p->size), |
60 lookupLatency(p->tag_latency), 61 accessLatency(p->sequential_access ? 62 p->tag_latency + p->data_latency : 63 std::max(p->tag_latency, p->data_latency)), 64 cache(nullptr), warmupBound(0), 65 warmedUp(false), numBlocks(0) 66{ 67} 68 69void 70BaseTags::setCache(BaseCache *_cache) 71{ 72 assert(!cache); 73 cache = _cache; 74} 75 76void 77BaseTags::regStats() 78{ 79 ClockedObject::regStats(); 80 81 using namespace Stats; 82 83 replacements 84 .init(maxThreadsPerCPU) 85 .name(name() + ".replacements") 86 .desc("number of replacements") 87 .flags(total) 88 ; 89 90 tagsInUse 91 .name(name() + ".tagsinuse") 92 .desc("Cycle average of tags in use") 93 ; 94 95 totalRefs 96 .name(name() + ".total_refs") 97 .desc("Total number of references to valid blocks.") 98 ; 99 100 sampledRefs 101 .name(name() + ".sampled_refs") 102 .desc("Sample count of references to valid blocks.") 103 ; 104 105 avgRefs 106 .name(name() + ".avg_refs") 107 .desc("Average number of references to valid blocks.") 108 ; 109 110 avgRefs = totalRefs/sampledRefs; 111 112 warmupCycle 113 .name(name() + ".warmup_cycle") 114 .desc("Cycle when the warmup percentage was hit.") 115 ; 116 117 occupancies 118 .init(cache->system->maxMasters()) 119 .name(name() + ".occ_blocks") 120 .desc("Average occupied blocks per requestor") 121 .flags(nozero | nonan) 122 ; 123 for (int i = 0; i < cache->system->maxMasters(); i++) { 124 occupancies.subname(i, cache->system->getMasterName(i)); 125 } 126 127 avgOccs 128 .name(name() + ".occ_percent") 129 .desc("Average percentage of cache occupancy") 130 .flags(nozero | total) 131 ; 132 for (int i = 0; i < cache->system->maxMasters(); i++) { 133 avgOccs.subname(i, cache->system->getMasterName(i)); 134 } 135 136 avgOccs = occupancies / Stats::constant(numBlocks); 137 138 occupanciesTaskId 139 .init(ContextSwitchTaskId::NumTaskId) 140 .name(name() + ".occ_task_id_blocks") 141 .desc("Occupied blocks per task id") 142 .flags(nozero | nonan) 143 ; 144 145 ageTaskId 146 .init(ContextSwitchTaskId::NumTaskId, 5) 147 .name(name() + ".age_task_id_blocks") 148 .desc("Occupied blocks per task id") 149 .flags(nozero | nonan) 150 ; 151 152 percentOccsTaskId 153 .name(name() + ".occ_task_id_percent") 154 .desc("Percentage of cache occupancy per task id") 155 .flags(nozero) 156 ; 157 158 percentOccsTaskId = occupanciesTaskId / Stats::constant(numBlocks); 159 160 tagAccesses 161 .name(name() + ".tag_accesses") 162 .desc("Number of tag accesses") 163 ; 164 165 dataAccesses 166 .name(name() + ".data_accesses") 167 .desc("Number of data accesses") 168 ; 169 170 registerDumpCallback(new BaseTagsDumpCallback(this)); 171 registerExitCallback(new BaseTagsCallback(this)); 172}
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