8f010ce138
This patch adds three flag options to set the prefetcher class of the L1i cache, L1d cache and L2 cache. Change-Id: I310fcd9c49f9554d98cd565a32bdb96a3e165486 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/17709 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Tested-by: kokoro <noreply+kokoro@google.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
89 lines
3.3 KiB
Python
89 lines
3.3 KiB
Python
# Copyright (c) 2018 Metempsy Technology Consulting
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Pau Cabre
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# This file is a copy of MemConfig.py / CpuConfig.py, but modified to
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# hanle branch predictors instead of memory controllers / CPUs
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from __future__ import print_function
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from __future__ import absolute_import
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from m5 import fatal
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import m5.objects
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import inspect
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import sys
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from textwrap import TextWrapper
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# Dictionary of mapping names of real branch predictor models to classes.
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_hwp_classes = {}
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def is_hwp_class(cls):
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"""Determine if a class is a prefetcher that can be instantiated"""
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# We can't use the normal inspect.isclass because the ParamFactory
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# and ProxyFactory classes have a tendency to confuse it.
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try:
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return issubclass(cls, m5.objects.BasePrefetcher) and \
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not cls.abstract
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except (TypeError, AttributeError):
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return False
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def get(name):
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"""Get a HWP class from a user provided class name or alias."""
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try:
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hwp_class = _hwp_classes[name]
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return hwp_class
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except KeyError:
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print("%s is not a valid HWP model." % (name,))
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sys.exit(1)
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def print_hwp_list():
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"""Print a list of available HWP classes."""
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print("Available Hardware Prefetcher classes:")
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doc_wrapper = TextWrapper(initial_indent="\t\t", subsequent_indent="\t\t")
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for name, cls in _hwp_classes.items():
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print("\t%s" % name)
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# Try to extract the class documentation from the class help
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# string.
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doc = inspect.getdoc(cls)
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if doc:
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for line in doc_wrapper.wrap(doc):
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print(line)
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def hwp_names():
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"""Return a list of valid Hardware Prefetcher names."""
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return list(_hwp_classes.keys())
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# Add all HWPs in the object hierarchy.
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for name, cls in inspect.getmembers(m5.objects, is_hwp_class):
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_hwp_classes[name] = cls
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