base.cc revision 9796:485399270ca1 
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 "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      hitLatency(p->hit_latency)
59{
60}
61
62void
63BaseTags::setCache(BaseCache *_cache)
64{
65    cache = _cache;
66}
67
68void
69BaseTags::regStats()
70{
71    using namespace Stats;
72    replacements
73        .init(maxThreadsPerCPU)
74        .name(name() + ".replacements")
75        .desc("number of replacements")
76        .flags(total)
77        ;
78
79    tagsInUse
80        .name(name() + ".tagsinuse")
81        .desc("Cycle average of tags in use")
82        ;
83
84    totalRefs
85        .name(name() + ".total_refs")
86        .desc("Total number of references to valid blocks.")
87        ;
88
89    sampledRefs
90        .name(name() + ".sampled_refs")
91        .desc("Sample count of references to valid blocks.")
92        ;
93
94    avgRefs
95        .name(name() + ".avg_refs")
96        .desc("Average number of references to valid blocks.")
97        ;
98
99    avgRefs = totalRefs/sampledRefs;
100
101    warmupCycle
102        .name(name() + ".warmup_cycle")
103        .desc("Cycle when the warmup percentage was hit.")
104        ;
105
106    occupancies
107        .init(cache->system->maxMasters())
108        .name(name() + ".occ_blocks")
109        .desc("Average occupied blocks per requestor")
110        .flags(nozero | nonan)
111        ;
112    for (int i = 0; i < cache->system->maxMasters(); i++) {
113        occupancies.subname(i, cache->system->getMasterName(i));
114    }
115
116    avgOccs
117        .name(name() + ".occ_percent")
118        .desc("Average percentage of cache occupancy")
119        .flags(nozero | total)
120        ;
121    for (int i = 0; i < cache->system->maxMasters(); i++) {
122        avgOccs.subname(i, cache->system->getMasterName(i));
123    }
124
125    avgOccs = occupancies / Stats::constant(numBlocks);
126
127    registerExitCallback(new BaseTagsCallback(this));
128}
129