diff options
author | Mitch Hayenga <mitch.hayenga@arm.com> | 2014-09-20 17:17:44 -0400 |
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committer | Mitch Hayenga <mitch.hayenga@arm.com> | 2014-09-20 17:17:44 -0400 |
commit | 3e5bf0c922a88736915f0ea49cf0597d79b8ada1 (patch) | |
tree | 720ea0a19774124c59c82b8a391acd9290611b4d /src/mem/cache/prefetch/ghb.hh | |
parent | ca3513d63038e562782cd193c00c3892a276bb5d (diff) | |
download | gem5-3e5bf0c922a88736915f0ea49cf0597d79b8ada1.tar.xz |
mem: Remove the GHB prefetcher from the source tree
There are two primary issues with this code which make it deserving of deletion.
1) GHB is a way to structure a prefetcher, not a definitive type of prefetcher
2) This prefetcher isn't even structured like a GHB prefetcher.
It's basically a worse version of the stride prefetcher.
It primarily serves to confuse new gem5 users and most functionality is already
present in the stride prefetcher.
Diffstat (limited to 'src/mem/cache/prefetch/ghb.hh')
-rw-r--r-- | src/mem/cache/prefetch/ghb.hh | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/src/mem/cache/prefetch/ghb.hh b/src/mem/cache/prefetch/ghb.hh deleted file mode 100644 index 9ddff1160..000000000 --- a/src/mem/cache/prefetch/ghb.hh +++ /dev/null @@ -1,77 +0,0 @@ -/* - * Copyright (c) 2012-2013 ARM Limited - * All rights reserved - * - * The license below extends only to copyright in the software and shall - * not be construed as granting a license to any other intellectual - * property including but not limited to intellectual property relating - * to a hardware implementation of the functionality of the software - * licensed hereunder. You may use the software subject to the license - * terms below provided that you ensure that this notice is replicated - * unmodified and in its entirety in all distributions of the software, - * modified or unmodified, in source code or in binary form. - * - * Copyright (c) 2005 The Regents of The University of Michigan - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer; - * redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution; - * neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * 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. - * - * Authors: Ron Dreslinski - */ - -/** - * @file - * Describes a ghb prefetcher. - */ - -#ifndef __MEM_CACHE_PREFETCH_GHB_PREFETCHER_HH__ -#define __MEM_CACHE_PREFETCH_GHB_PREFETCHER_HH__ - -#include "mem/cache/prefetch/base.hh" -#include "params/GHBPrefetcher.hh" - -class GHBPrefetcher : public BasePrefetcher -{ - protected: - - static const int Max_Masters = 64; - - Addr secondLastMissAddr[Max_Masters]; - bool secondLastMissIsSecure[Max_Masters]; - Addr lastMissAddr[Max_Masters]; - bool lastMissIsSecure[Max_Masters]; - - public: - GHBPrefetcher(const Params *p) - : BasePrefetcher(p) - { - } - - ~GHBPrefetcher() {} - - void calculatePrefetch(PacketPtr &pkt, std::list<Addr> &addresses, - std::list<Cycles> &delays); -}; - -#endif // __MEM_CACHE_PREFETCH_GHB_PREFETCHER_HH__ |