6563ec8634
The MemTest class really only tests false sharing, and as such there was a lot of old cruft that could be removed. This patch cleans up the tester, and also makes it more clear what the assumptions are. As part of this simplification the reference functional memory is also removed. The regression configs using MemTest are updated to reflect the changes, and the stats will be bumped in a separate patch. The example config will be updated in a separate patch due to more extensive re-work. In a follow-on patch a new tester will be introduced that uses the MemChecker to implement true sharing.
76 lines
3.7 KiB
Python
76 lines
3.7 KiB
Python
# Copyright (c) 2015 ARM Limited
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# All rights reserved.
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#
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# The license below extends only to copyright in the software and shall
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# not be construed as granting a license to any other intellectual
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# property including but not limited to intellectual property relating
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# to a hardware implementation of the functionality of the software
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# licensed hereunder. You may use the software subject to the license
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# terms below provided that you ensure that this notice is replicated
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# unmodified and in its entirety in all distributions of the software,
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# modified or unmodified, in source code or in binary form.
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#
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# Copyright (c) 2005-2007 The Regents of The University of Michigan
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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: Nathan Binkert
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# Andreas Hansson
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from MemObject import MemObject
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from m5.params import *
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from m5.proxy import *
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class MemTest(MemObject):
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type = 'MemTest'
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cxx_header = "cpu/testers/memtest/memtest.hh"
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# Interval of packet injection, the size of the memory range
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# touched, and an optional stop condition
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interval = Param.Cycles(1, "Interval between request packets")
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size = Param.Unsigned(65536, "Size of memory region to use (bytes)")
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max_loads = Param.Counter(0, "Number of loads to execute before exiting")
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# Control the mix of packets and if functional accesses are part of
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# the mix or not
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percent_reads = Param.Percent(65, "Percentage reads")
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percent_functional = Param.Percent(50, "Percentage functional accesses")
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percent_uncacheable = Param.Percent(10, "Percentage uncacheable")
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# Determine how often to print progress messages and what timeout
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# to use for checking progress of both requests and responses
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progress_interval = Param.Counter(1000000,
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"Progress report interval (in accesses)")
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progress_check = Param.Cycles(5000000, "Cycles before exiting " \
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"due to lack of progress")
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port = MasterPort("Port to the memory system")
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system = Param.System(Parent.any, "System this tester is part of")
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# Add the ability to supress error responses on functional
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# accesses as Ruby needs this
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suppress_func_warnings = Param.Bool(False, "Suppress warnings when "\
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"functional accesses fail.")
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