bip_rp.hh File Reference

Copyright (c) 2018-2020 Inria All rights reserved. More...

#include "mem/cache/replacement_policies/lru_rp.hh"

Go to the source code of this file.

Classes
class	gem5::replacement_policy::BIP

Namespaces
	gem5
	Reference material can be found at the JEDEC website: UFS standard http://www.jedec.org/standards-documents/results/jesd220 UFS HCI specification http://www.jedec.org/standards-documents/results/jesd223.
	gem5::replacement_policy

Functions
	gem5::GEM5_DEPRECATED_NAMESPACE (ReplacementPolicy, replacement_policy)

Detailed Description

Copyright (c) 2018-2020 Inria All rights reserved.

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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Declaration of a Bimodal Interval Prediction replacement policy. Has a probability of when placing new entries, placing them as MRU.

Although both LRU and LIP can be seen as specific cases of BIP where the bimodal throtle parameter are 1 and 0, respectively, we decide not to inherit from it, and do the other way around (inherit from LRU) for efficiency reasons.

In the original paper they use btp = 1/32 ~= 3%.

Definition in file bip_rp.hh.