1 # Copyright (c) 2018 Inria
4 # Redistribution and use in source and binary forms, with or without
5 # modification, are permitted provided that the following conditions are
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7 # notice, this list of conditions and the following disclaimer;
8 # redistributions in binary form must reproduce the above copyright
9 # notice, this list of conditions and the following disclaimer in the
10 # documentation and/or other materials provided with the distribution;
11 # neither the name of the copyright holders nor the names of its
12 # contributors may be used to endorse or promote products derived from
13 # this software without specific prior written permission.
15 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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18 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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25 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 # Authors: Daniel Carvalho
29 from m5
.params
import *
30 from m5
.proxy
import *
31 from m5
.SimObject
import SimObject
33 class BaseReplacementPolicy(SimObject
):
34 type = 'BaseReplacementPolicy'
36 cxx_header
= "mem/cache/replacement_policies/base.hh"
38 class FIFORP(BaseReplacementPolicy
):
41 cxx_header
= "mem/cache/replacement_policies/fifo_rp.hh"
43 class SecondChanceRP(FIFORP
):
44 type = 'SecondChanceRP'
45 cxx_class
= 'SecondChanceRP'
46 cxx_header
= "mem/cache/replacement_policies/second_chance_rp.hh"
48 class LFURP(BaseReplacementPolicy
):
51 cxx_header
= "mem/cache/replacement_policies/lfu_rp.hh"
53 class LRURP(BaseReplacementPolicy
):
56 cxx_header
= "mem/cache/replacement_policies/lru_rp.hh"
61 cxx_header
= "mem/cache/replacement_policies/bip_rp.hh"
62 btp
= Param
.Percent(3, "Percentage of blocks to be inserted as MRU")
67 class MRURP(BaseReplacementPolicy
):
70 cxx_header
= "mem/cache/replacement_policies/mru_rp.hh"
72 class RandomRP(BaseReplacementPolicy
):
74 cxx_class
= 'RandomRP'
75 cxx_header
= "mem/cache/replacement_policies/random_rp.hh"
77 class BRRIPRP(BaseReplacementPolicy
):
80 cxx_header
= "mem/cache/replacement_policies/brrip_rp.hh"
81 max_RRPV
= Param
.Int(3, "Maximum RRPV possible")
82 hit_priority
= Param
.Bool(False,
83 "Prioritize evicting blocks that havent had a hit recently")
84 btp
= Param
.Percent(3,
85 "Percentage of blocks to be inserted with long RRPV")
87 class RRIPRP(BRRIPRP
):
94 class TreePLRURP(BaseReplacementPolicy
):
96 cxx_class
= 'TreePLRURP'
97 cxx_header
= "mem/cache/replacement_policies/tree_plru_rp.hh"
98 num_leaves
= Param
.Int(Parent
.assoc
, "Number of leaves in each tree")