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mem-cache: Add multi-prefetcher adaptor

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This patch adds a meta-prefetcher that enables gem5's cache models to
connect to multiple prefetchers. Sub-prefetchers still use the
probes-based interface and training can be controlled
independently. However, when the cache requests a prefetch packet, the
adaptor traverses the priority list of prefetchers and uses the first
prefetcher that is able to generate a prefetch.

Kudos to Mitch Hayenga for the original version of this patch.

Change-Id: I25569a834997e5404c7183ec995d212912c5dcdf
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/18868
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
This commit is contained in:
Andreas Sandberg
2016-04-12 09:10:13 -05:00
parent 526a2fb619
commit b4c472945a
5 changed files with 170 additions and 2 deletions
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1
src/mem/cache/prefetch/SConscript vendored
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@@ -34,6 +34,7 @@ SimObject('Prefetcher.py')
Source('access_map_pattern_matching.cc')
Source('base.cc')
Source('multi.cc')
Source('bop.cc')
Source('delta_correlating_prediction_tables.cc')
Source('irregular_stream_buffer.cc')