base.cc revision 10693:c0979b2ebda5 
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
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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 "cpu/smt.hh" //maxThreadsPerCPU
50#include "mem/cache/tags/base.hh"
51#include "mem/cache/base.hh"
52#include "sim/sim_exit.hh"
53
54using namespace std;
55
56BaseTags::BaseTags(const Params *p)
57    : ClockedObject(p), blkSize(p->block_size), size(p->size),
58      accessLatency(p->hit_latency), cache(nullptr), warmupBound(0),
59      warmedUp(false), numBlocks(0)
60{
61}
62
63void
64BaseTags::setCache(BaseCache *_cache)
65{
66    assert(!cache);
67    cache = _cache;
68}
69
70void
71BaseTags::regStats()
72{
73    using namespace Stats;
74    replacements
75        .init(maxThreadsPerCPU)
76        .name(name() + ".replacements")
77        .desc("number of replacements")
78        .flags(total)
79        ;
80
81    tagsInUse
82        .name(name() + ".tagsinuse")
83        .desc("Cycle average of tags in use")
84        ;
85
86    totalRefs
87        .name(name() + ".total_refs")
88        .desc("Total number of references to valid blocks.")
89        ;
90
91    sampledRefs
92        .name(name() + ".sampled_refs")
93        .desc("Sample count of references to valid blocks.")
94        ;
95
96    avgRefs
97        .name(name() + ".avg_refs")
98        .desc("Average number of references to valid blocks.")
99        ;
100
101    avgRefs = totalRefs/sampledRefs;
102
103    warmupCycle
104        .name(name() + ".warmup_cycle")
105        .desc("Cycle when the warmup percentage was hit.")
106        ;
107
108    occupancies
109        .init(cache->system->maxMasters())
110        .name(name() + ".occ_blocks")
111        .desc("Average occupied blocks per requestor")
112        .flags(nozero | nonan)
113        ;
114    for (int i = 0; i < cache->system->maxMasters(); i++) {
115        occupancies.subname(i, cache->system->getMasterName(i));
116    }
117
118    avgOccs
119        .name(name() + ".occ_percent")
120        .desc("Average percentage of cache occupancy")
121        .flags(nozero | total)
122        ;
123    for (int i = 0; i < cache->system->maxMasters(); i++) {
124        avgOccs.subname(i, cache->system->getMasterName(i));
125    }
126
127    avgOccs = occupancies / Stats::constant(numBlocks);
128
129    occupanciesTaskId
130        .init(ContextSwitchTaskId::NumTaskId)
131        .name(name() + ".occ_task_id_blocks")
132        .desc("Occupied blocks per task id")
133        .flags(nozero | nonan)
134        ;
135
136    ageTaskId
137        .init(ContextSwitchTaskId::NumTaskId, 5)
138        .name(name() + ".age_task_id_blocks")
139        .desc("Occupied blocks per task id")
140        .flags(nozero | nonan)
141        ;
142
143    percentOccsTaskId
144        .name(name() + ".occ_task_id_percent")
145        .desc("Percentage of cache occupancy per task id")
146        .flags(nozero)
147        ;
148
149    percentOccsTaskId = occupanciesTaskId / Stats::constant(numBlocks);
150
151    tagAccesses
152        .name(name() + ".tag_accesses")
153        .desc("Number of tag accesses")
154        ;
155
156    dataAccesses
157        .name(name() + ".data_accesses")
158        .desc("Number of data accesses")
159        ;
160
161    registerDumpCallback(new BaseTagsDumpCallback(this));
162    registerExitCallback(new BaseTagsCallback(this));
163}
164