base.cc revision 11722:f15f02d8c79e
1/* 2 * Copyright (c) 2013 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) 58 : ClockedObject(p), blkSize(p->block_size), size(p->size), 59 lookupLatency(p->tag_latency), 60 accessLatency(p->sequential_access ? 61 p->tag_latency + p->data_latency : 62 std::max(p->tag_latency, p->data_latency)), 63 cache(nullptr), warmupBound(0), 64 warmedUp(false), numBlocks(0) 65{ 66} 67 68void 69BaseTags::setCache(BaseCache *_cache) 70{ 71 assert(!cache); 72 cache = _cache; 73} 74 75void 76BaseTags::regStats() 77{ 78 ClockedObject::regStats(); 79 80 using namespace Stats; 81 82 replacements 83 .init(maxThreadsPerCPU) 84 .name(name() + ".replacements") 85 .desc("number of replacements") 86 .flags(total) 87 ; 88 89 tagsInUse 90 .name(name() + ".tagsinuse") 91 .desc("Cycle average of tags in use") 92 ; 93 94 totalRefs 95 .name(name() + ".total_refs") 96 .desc("Total number of references to valid blocks.") 97 ; 98 99 sampledRefs 100 .name(name() + ".sampled_refs") 101 .desc("Sample count of references to valid blocks.") 102 ; 103 104 avgRefs 105 .name(name() + ".avg_refs") 106 .desc("Average number of references to valid blocks.") 107 ; 108 109 avgRefs = totalRefs/sampledRefs; 110 111 warmupCycle 112 .name(name() + ".warmup_cycle") 113 .desc("Cycle when the warmup percentage was hit.") 114 ; 115 116 occupancies 117 .init(cache->system->maxMasters()) 118 .name(name() + ".occ_blocks") 119 .desc("Average occupied blocks per requestor") 120 .flags(nozero | nonan) 121 ; 122 for (int i = 0; i < cache->system->maxMasters(); i++) { 123 occupancies.subname(i, cache->system->getMasterName(i)); 124 } 125 126 avgOccs 127 .name(name() + ".occ_percent") 128 .desc("Average percentage of cache occupancy") 129 .flags(nozero | total) 130 ; 131 for (int i = 0; i < cache->system->maxMasters(); i++) { 132 avgOccs.subname(i, cache->system->getMasterName(i)); 133 } 134 135 avgOccs = occupancies / Stats::constant(numBlocks); 136 137 occupanciesTaskId 138 .init(ContextSwitchTaskId::NumTaskId) 139 .name(name() + ".occ_task_id_blocks") 140 .desc("Occupied blocks per task id") 141 .flags(nozero | nonan) 142 ; 143 144 ageTaskId 145 .init(ContextSwitchTaskId::NumTaskId, 5) 146 .name(name() + ".age_task_id_blocks") 147 .desc("Occupied blocks per task id") 148 .flags(nozero | nonan) 149 ; 150 151 percentOccsTaskId 152 .name(name() + ".occ_task_id_percent") 153 .desc("Percentage of cache occupancy per task id") 154 .flags(nozero) 155 ; 156 157 percentOccsTaskId = occupanciesTaskId / Stats::constant(numBlocks); 158 159 tagAccesses 160 .name(name() + ".tag_accesses") 161 .desc("Number of tag accesses") 162 ; 163 164 dataAccesses 165 .name(name() + ".data_accesses") 166 .desc("Number of data accesses") 167 ; 168 169 registerDumpCallback(new BaseTagsDumpCallback(this)); 170 registerExitCallback(new BaseTagsCallback(this)); 171} 172