ReplacementPolicies.py revision 12634 
1# Copyright (c) 2018 Inria
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27# Authors: Daniel Carvalho
28
29from m5.params import *
30from m5.proxy import *
31from m5.SimObject import SimObject
32
33class BaseReplacementPolicy(SimObject):
34    type = 'BaseReplacementPolicy'
35    abstract = True
36    cxx_header = "mem/cache/replacement_policies/base.hh"
37
38class FIFORP(BaseReplacementPolicy):
39    type = 'FIFORP'
40    cxx_class = 'FIFORP'
41    cxx_header = "mem/cache/replacement_policies/fifo_rp.hh"
42
43class LFURP(BaseReplacementPolicy):
44    type = 'LFURP'
45    cxx_class = 'LFURP'
46    cxx_header = "mem/cache/replacement_policies/lfu_rp.hh"
47
48class LRURP(BaseReplacementPolicy):
49    type = 'LRURP'
50    cxx_class = 'LRURP'
51    cxx_header = "mem/cache/replacement_policies/lru_rp.hh"
52
53class BIPRP(LRURP):
54    type = 'BIPRP'
55    cxx_class = 'BIPRP'
56    cxx_header = "mem/cache/replacement_policies/bip_rp.hh"
57    btp = Param.Percent(3, "Percentage of blocks to be inserted as MRU")
58
59class MRURP(BaseReplacementPolicy):
60    type = 'MRURP'
61    cxx_class = 'MRURP'
62    cxx_header = "mem/cache/replacement_policies/mru_rp.hh"
63
64class RandomRP(BaseReplacementPolicy):
65    type = 'RandomRP'
66    cxx_class = 'RandomRP'
67    cxx_header = "mem/cache/replacement_policies/random_rp.hh"
68
69class BRRIPRP(BaseReplacementPolicy):
70    type = 'BRRIPRP'
71    cxx_class = 'BRRIPRP'
72    cxx_header = "mem/cache/replacement_policies/brrip_rp.hh"
73    max_RRPV = Param.Unsigned(3, "Maximum RRPV possible")
74    hit_priority = Param.Bool(False,
75        "Prioritize evicting blocks that havent had a hit recently")
76    btp = Param.Percent(3,
77        "Percentage of blocks to be inserted with long RRPV")
78
79class RRIPRP(BRRIPRP):
80    btp = 0
81