base.cc revision 10360:919c02740209 
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
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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 "config/the_isa.hh"
50#include "cpu/smt.hh" //maxThreadsPerCPU
51#include "mem/cache/tags/base.hh"
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      hitLatency(p->hit_latency), cache(nullptr), warmupBound(0),
60      warmedUp(false), numBlocks(0)
61{
62}
63
64void
65BaseTags::setCache(BaseCache *_cache)
66{
67    assert(!cache);
68    cache = _cache;
69}
70
71void
72BaseTags::regStats()
73{
74    using namespace Stats;
75    replacements
76        .init(maxThreadsPerCPU)
77        .name(name() + ".replacements")
78        .desc("number of replacements")
79        .flags(total)
80        ;
81
82    tagsInUse
83        .name(name() + ".tagsinuse")
84        .desc("Cycle average of tags in use")
85        ;
86
87    totalRefs
88        .name(name() + ".total_refs")
89        .desc("Total number of references to valid blocks.")
90        ;
91
92    sampledRefs
93        .name(name() + ".sampled_refs")
94        .desc("Sample count of references to valid blocks.")
95        ;
96
97    avgRefs
98        .name(name() + ".avg_refs")
99        .desc("Average number of references to valid blocks.")
100        ;
101
102    avgRefs = totalRefs/sampledRefs;
103
104    warmupCycle
105        .name(name() + ".warmup_cycle")
106        .desc("Cycle when the warmup percentage was hit.")
107        ;
108
109    occupancies
110        .init(cache->system->maxMasters())
111        .name(name() + ".occ_blocks")
112        .desc("Average occupied blocks per requestor")
113        .flags(nozero | nonan)
114        ;
115    for (int i = 0; i < cache->system->maxMasters(); i++) {
116        occupancies.subname(i, cache->system->getMasterName(i));
117    }
118
119    avgOccs
120        .name(name() + ".occ_percent")
121        .desc("Average percentage of cache occupancy")
122        .flags(nozero | total)
123        ;
124    for (int i = 0; i < cache->system->maxMasters(); i++) {
125        avgOccs.subname(i, cache->system->getMasterName(i));
126    }
127
128    avgOccs = occupancies / Stats::constant(numBlocks);
129
130    occupanciesTaskId
131        .init(ContextSwitchTaskId::NumTaskId)
132        .name(name() + ".occ_task_id_blocks")
133        .desc("Occupied blocks per task id")
134        .flags(nozero | nonan)
135        ;
136
137    ageTaskId
138        .init(ContextSwitchTaskId::NumTaskId, 5)
139        .name(name() + ".age_task_id_blocks")
140        .desc("Occupied blocks per task id")
141        .flags(nozero | nonan)
142        ;
143
144    percentOccsTaskId
145        .name(name() + ".occ_task_id_percent")
146        .desc("Percentage of cache occupancy per task id")
147        .flags(nozero)
148        ;
149
150    percentOccsTaskId = occupanciesTaskId / Stats::constant(numBlocks);
151
152    tagAccesses
153        .name(name() + ".tag_accesses")
154        .desc("Number of tag accesses")
155        ;
156
157    dataAccesses
158        .name(name() + ".data_accesses")
159        .desc("Number of data accesses")
160        ;
161
162    registerDumpCallback(new BaseTagsDumpCallback(this));
163    registerExitCallback(new BaseTagsCallback(this));
164}
165