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erasure-code: SSE optimized jerasure plugins
The jerasure plugin is compiled with three sets of flags: * jerasure_generic with no SSE optimization * jerasure_sse3 with SSE2, SSE3 and SSSE3 optimizations * jerasure_sse4 with SSE2, SSE3, SSSE3, SSE41, SSE42 and PCLMUL optimizations The jerasure plugin loads the appropriate plugin depending on the CPU features detected at runtime. http://tracker.ceph.com/issues/7826 fixes #7826 Signed-off-by: Loic Dachary <loic@dachary.org>
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Loic Dachary
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Mar 27, 2014
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src/erasure-code/jerasure/ErasureCodePluginSelectJerasure.cc
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| // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- | ||
| // vim: ts=8 sw=2 smarttab | ||
| /* | ||
| * Ceph - scalable distributed file system | ||
| * | ||
| * Copyright (C) 2014 Cloudwatt <libre.licensing@cloudwatt.com> | ||
| * | ||
| * Author: Loic Dachary <loic@dachary.org> | ||
| * | ||
| * This library is free software; you can redistribute it and/or | ||
| * modify it under the terms of the GNU Lesser General Public | ||
| * License as published by the Free Software Foundation; either | ||
| * version 2.1 of the License, or (at your option) any later version. | ||
| * | ||
| */ | ||
|
|
||
| #include "common/debug.h" | ||
| #include "arch/probe.h" | ||
| #include "arch/intel.h" | ||
| #include "erasure-code/ErasureCodePlugin.h" | ||
|
|
||
| #define dout_subsys ceph_subsys_osd | ||
| #undef dout_prefix | ||
| #define dout_prefix _prefix(_dout) | ||
|
|
||
| static ostream& _prefix(std::ostream* _dout) | ||
| { | ||
| return *_dout << "ErasureCodePluginSelectJerasure: "; | ||
| } | ||
|
|
||
| class ErasureCodePluginSelectJerasure : public ErasureCodePlugin { | ||
| public: | ||
| virtual int factory(const map<std::string,std::string> ¶meters, | ||
| ErasureCodeInterfaceRef *erasure_code) { | ||
| ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance(); | ||
| stringstream ss; | ||
| int ret; | ||
| ceph_arch_probe(); | ||
| if (ceph_arch_intel_pclmul && | ||
| ceph_arch_intel_sse42 && | ||
| ceph_arch_intel_sse41 && | ||
| ceph_arch_intel_ssse3 && | ||
| ceph_arch_intel_sse3 && | ||
| ceph_arch_intel_sse2) { | ||
| dout(10) << "SSE4 plugin" << dendl; | ||
| ret = instance.factory("jerasure_sse4", parameters, erasure_code, ss); | ||
| } else if (ceph_arch_intel_ssse3 && | ||
| ceph_arch_intel_sse3 && | ||
| ceph_arch_intel_sse2) { | ||
| dout(10) << "SSE3 plugin" << dendl; | ||
| ret = instance.factory("jerasure_sse3", parameters, erasure_code, ss); | ||
| } else { | ||
| dout(10) << "generic plugin" << dendl; | ||
| ret = instance.factory("jerasure_generic", parameters, erasure_code, ss); | ||
| } | ||
| if (ret) | ||
| derr << ss.str() << dendl; | ||
| return ret; | ||
| } | ||
| }; | ||
|
|
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| int __erasure_code_init(char *plugin_name) | ||
| { | ||
| ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance(); | ||
| return instance.add(plugin_name, new ErasureCodePluginSelectJerasure()); | ||
| } |
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