base.cc revision 11522 
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      accessLatency(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    ClockedObject::regStats();
75
76    using namespace Stats;
77
78    replacements
79        .init(maxThreadsPerCPU)
80        .name(name() + ".replacements")
81        .desc("number of replacements")
82        .flags(total)
83        ;
84
85    tagsInUse
86        .name(name() + ".tagsinuse")
87        .desc("Cycle average of tags in use")
88        ;
89
90    totalRefs
91        .name(name() + ".total_refs")
92        .desc("Total number of references to valid blocks.")
93        ;
94
95    sampledRefs
96        .name(name() + ".sampled_refs")
97        .desc("Sample count of references to valid blocks.")
98        ;
99
100    avgRefs
101        .name(name() + ".avg_refs")
102        .desc("Average number of references to valid blocks.")
103        ;
104
105    avgRefs = totalRefs/sampledRefs;
106
107    warmupCycle
108        .name(name() + ".warmup_cycle")
109        .desc("Cycle when the warmup percentage was hit.")
110        ;
111
112    occupancies
113        .init(cache->system->maxMasters())
114        .name(name() + ".occ_blocks")
115        .desc("Average occupied blocks per requestor")
116        .flags(nozero | nonan)
117        ;
118    for (int i = 0; i < cache->system->maxMasters(); i++) {
119        occupancies.subname(i, cache->system->getMasterName(i));
120    }
121
122    avgOccs
123        .name(name() + ".occ_percent")
124        .desc("Average percentage of cache occupancy")
125        .flags(nozero | total)
126        ;
127    for (int i = 0; i < cache->system->maxMasters(); i++) {
128        avgOccs.subname(i, cache->system->getMasterName(i));
129    }
130
131    avgOccs = occupancies / Stats::constant(numBlocks);
132
133    occupanciesTaskId
134        .init(ContextSwitchTaskId::NumTaskId)
135        .name(name() + ".occ_task_id_blocks")
136        .desc("Occupied blocks per task id")
137        .flags(nozero | nonan)
138        ;
139
140    ageTaskId
141        .init(ContextSwitchTaskId::NumTaskId, 5)
142        .name(name() + ".age_task_id_blocks")
143        .desc("Occupied blocks per task id")
144        .flags(nozero | nonan)
145        ;
146
147    percentOccsTaskId
148        .name(name() + ".occ_task_id_percent")
149        .desc("Percentage of cache occupancy per task id")
150        .flags(nozero)
151        ;
152
153    percentOccsTaskId = occupanciesTaskId / Stats::constant(numBlocks);
154
155    tagAccesses
156        .name(name() + ".tag_accesses")
157        .desc("Number of tag accesses")
158        ;
159
160    dataAccesses
161        .name(name() + ".data_accesses")
162        .desc("Number of data accesses")
163        ;
164
165    registerDumpCallback(new BaseTagsDumpCallback(this));
166    registerExitCallback(new BaseTagsCallback(this));
167}
168