2 * Copyright (c) 2013 ARM Limited
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14 * Copyright (c) 2003-2005 The Regents of The University of Michigan
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26 * this software without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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40 * Authors: Erik Hallnor
46 * Definitions of BaseTags.
49 #include "mem/cache/tags/base.hh"
51 #include "cpu/smt.hh" //maxThreadsPerCPU
52 #include "mem/cache/base.hh"
53 #include "sim/sim_exit.hh"
57 BaseTags::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)
69 BaseTags::setCache(BaseCache
*_cache
)
78 ClockedObject::regStats();
80 using namespace Stats
;
83 .init(maxThreadsPerCPU
)
84 .name(name() + ".replacements")
85 .desc("number of replacements")
90 .name(name() + ".tagsinuse")
91 .desc("Cycle average of tags in use")
95 .name(name() + ".total_refs")
96 .desc("Total number of references to valid blocks.")
100 .name(name() + ".sampled_refs")
101 .desc("Sample count of references to valid blocks.")
105 .name(name() + ".avg_refs")
106 .desc("Average number of references to valid blocks.")
109 avgRefs
= totalRefs
/sampledRefs
;
112 .name(name() + ".warmup_cycle")
113 .desc("Cycle when the warmup percentage was hit.")
117 .init(cache
->system
->maxMasters())
118 .name(name() + ".occ_blocks")
119 .desc("Average occupied blocks per requestor")
120 .flags(nozero
| nonan
)
122 for (int i
= 0; i
< cache
->system
->maxMasters(); i
++) {
123 occupancies
.subname(i
, cache
->system
->getMasterName(i
));
127 .name(name() + ".occ_percent")
128 .desc("Average percentage of cache occupancy")
129 .flags(nozero
| total
)
131 for (int i
= 0; i
< cache
->system
->maxMasters(); i
++) {
132 avgOccs
.subname(i
, cache
->system
->getMasterName(i
));
135 avgOccs
= occupancies
/ Stats::constant(numBlocks
);
138 .init(ContextSwitchTaskId::NumTaskId
)
139 .name(name() + ".occ_task_id_blocks")
140 .desc("Occupied blocks per task id")
141 .flags(nozero
| nonan
)
145 .init(ContextSwitchTaskId::NumTaskId
, 5)
146 .name(name() + ".age_task_id_blocks")
147 .desc("Occupied blocks per task id")
148 .flags(nozero
| nonan
)
152 .name(name() + ".occ_task_id_percent")
153 .desc("Percentage of cache occupancy per task id")
157 percentOccsTaskId
= occupanciesTaskId
/ Stats::constant(numBlocks
);
160 .name(name() + ".tag_accesses")
161 .desc("Number of tag accesses")
165 .name(name() + ".data_accesses")
166 .desc("Number of data accesses")
169 registerDumpCallback(new BaseTagsDumpCallback(this));
170 registerExitCallback(new BaseTagsCallback(this));