Peter Park
245 líneas
8.2 KiB
C++
245 líneas
8.2 KiB
C++
// MIT License
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//
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// Copyright (c) 2022-2025 Advanced Micro Devices, Inc. All Rights Reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#include "perf.hpp"
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#include "debug.hpp"
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#include <timemory/units.hpp>
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namespace rocprofsys
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{
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namespace perf
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{
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namespace units = ::tim::units;
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std::vector<std::string>
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get_config_choices()
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{
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namespace regex_const = ::std::regex_constants;
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auto _data = std::vector<std::string>{};
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auto _papi_events = tim::papi::available_events_info();
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const auto _prefix = std::string_view{ "perf::" };
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auto _regex =
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std::regex{ "^(perf::|)PERF_COUNT_(HW|SW|HW_CACHE)_([A-Z_]+)(|:[A-Z]+)$",
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regex_const::optimize };
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for(const auto& itr : _papi_events)
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{
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if(std::regex_match(itr.symbol(), _regex))
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{
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auto _symbol = itr.symbol();
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auto _pos = _symbol.find(_prefix);
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if(_pos == 0) _symbol = _symbol.substr(_prefix.length());
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_data.emplace_back(_symbol);
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}
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}
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std::sort(_data.begin(), _data.end());
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_data.erase(std::unique(_data.begin(), _data.end()), _data.end());
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return _data;
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}
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event_type
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get_event_type(std::string_view _v)
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{
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if(_v.find("PERF_COUNT_SW_") != std::string_view::npos)
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return event_type::software;
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else if(_v.find("PERF_COUNT_SW_") != std::string_view::npos &&
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!std::regex_search(_v.data(),
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std::regex{ "PERF_COUNT_HW_CACHE_(MISSES|REFERENCES)$" }))
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return event_type::hw_cache;
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else if(_v.find("PERF_COUNT_HW_") != std::string_view::npos)
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return event_type::hardware;
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return event_type::max;
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}
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hw_config
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get_hw_config(std::string_view _v)
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{
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#define HW_CONFIG_REGEX(KEY) std::regex_search(_v.data(), std::regex{ "(HW_" KEY ")$" })
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if(HW_CONFIG_REGEX("CPU_CYCLES"))
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return hw_config::cpu_cycles;
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else if(HW_CONFIG_REGEX("INSTRUCTIONS"))
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return hw_config::instructions;
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else if(HW_CONFIG_REGEX("CACHE_REFERENCES"))
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return hw_config::cache_references;
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else if(HW_CONFIG_REGEX("CACHE_MISSES"))
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return hw_config::cache_misses;
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else if(HW_CONFIG_REGEX("BRANCH_INSTRUCTIONS"))
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return hw_config::branch_instructions;
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else if(HW_CONFIG_REGEX("BRANCH_MISSES"))
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return hw_config::branch_misses;
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else if(HW_CONFIG_REGEX("BUS_CYCLES"))
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return hw_config::bus_cycles;
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else if(HW_CONFIG_REGEX("STALLED_CYCLES_FRONTEND"))
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return hw_config::stalled_cycles_frontend;
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else if(HW_CONFIG_REGEX("STALLED_CYCLES_BACKEND"))
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return hw_config::stalled_cycles_backend;
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else if(HW_CONFIG_REGEX("REF_CPU_CYCLES"))
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return hw_config::reference_cpu_cycles;
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else
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{
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ROCPROFSYS_THROW("Unknown perf hardware config: %s", _v.data());
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}
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#undef HW_CONFIG_REGEX
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return hw_config::max;
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}
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sw_config
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get_sw_config(std::string_view _v)
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{
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#define SW_CONFIG_REGEX(KEY) std::regex_search(_v.data(), std::regex{ "(SW_" KEY ")$" })
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if(SW_CONFIG_REGEX("CPU_CLOCK"))
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return sw_config::cpu_clock;
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else if(SW_CONFIG_REGEX("TASK_CLOCK"))
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return sw_config::task_clock;
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else if(SW_CONFIG_REGEX("PAGE_FAULTS"))
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return sw_config::page_faults;
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else if(SW_CONFIG_REGEX("CONTEXT_SWITCHES"))
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return sw_config::context_switches;
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else if(SW_CONFIG_REGEX("CPU_MIGRATIONS"))
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return sw_config::cpu_migrations;
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else if(SW_CONFIG_REGEX("PAGE_FAULTS_MIN"))
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return sw_config::page_faults_minor;
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else if(SW_CONFIG_REGEX("PAGE_FAULTS_MAJ"))
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return sw_config::page_faults_major;
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else if(SW_CONFIG_REGEX("ALIGNMENT_FAULTS"))
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return sw_config::alignment_faults;
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else if(SW_CONFIG_REGEX("EMULATION_FAULTS"))
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return sw_config::emulation_faults;
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else
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{
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ROCPROFSYS_THROW("Unknown perf hw cache config: %s", _v.data());
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}
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#undef SW_CONFIG_REGEX
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return sw_config::max;
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}
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int
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get_hw_cache_config(std::string_view _v)
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{
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int _value = 0;
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#define HW_CACHE_CONFIG_REGEX(KEY) \
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std::regex_search(_v.data(), std::regex{ "(HW_CACHE_" KEY ")" })
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if(HW_CACHE_CONFIG_REGEX("L1D"))
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_value |= static_cast<int>(hw_cache_config::l1d);
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else if(HW_CACHE_CONFIG_REGEX("L1I"))
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_value |= static_cast<int>(hw_cache_config::l1i);
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else if(HW_CACHE_CONFIG_REGEX("LL"))
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_value |= static_cast<int>(hw_cache_config::ll);
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else if(HW_CACHE_CONFIG_REGEX("DTLB"))
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_value |= static_cast<int>(hw_cache_config::dtlb);
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else if(HW_CACHE_CONFIG_REGEX("ITLB"))
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_value |= static_cast<int>(hw_cache_config::itlb);
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else if(HW_CACHE_CONFIG_REGEX("BPU"))
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_value |= static_cast<int>(hw_cache_config::bpu);
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else if(HW_CACHE_CONFIG_REGEX("NODE"))
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_value |= static_cast<int>(hw_cache_config::node);
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else
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ROCPROFSYS_THROW("Unknown perf software config: %s", _v.data());
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#undef HW_CACHE_CONFIG_REGEX
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#define HW_CACHE_OP_REGEX(KEY) \
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std::regex_search(_v.data(), std::regex{ "(HW_CACHE_([A-Z1]+):" KEY ")" })
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if(HW_CACHE_OP_REGEX("READ"))
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_value |= (static_cast<int>(hw_cache_op::read) << 8);
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else if(HW_CACHE_OP_REGEX("WRITE"))
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_value |= (static_cast<int>(hw_cache_op::write) << 8);
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else if(HW_CACHE_OP_REGEX("PREFETCH"))
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_value |= (static_cast<int>(hw_cache_op::prefetch) << 8);
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else
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_value |= (static_cast<int>(hw_cache_op::read) << 8);
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#undef HW_CACHE_OP_REGEX
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#define HW_CACHE_OP_RESULT_REGEX(KEY) \
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std::regex_search(_v.data(), std::regex{ "(HW_CACHE_([A-Z1]+):" KEY ")" })
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if(HW_CACHE_OP_RESULT_REGEX("READ"))
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_value |= (static_cast<int>(hw_cache_op_result::access) << 16);
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else if(HW_CACHE_OP_RESULT_REGEX("WRITE"))
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_value |= (static_cast<int>(hw_cache_op_result::miss) << 16);
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else
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_value |= (static_cast<int>(hw_cache_op_result::access) << 16);
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#undef HW_CACHE_OP_RESULT_REGEX
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return _value;
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}
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void
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config_overflow_sampling(struct perf_event_attr& _pe, std::string_view _event,
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double _freq)
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{
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auto _period = (1.0 / _freq) * units::sec;
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_pe.type = static_cast<int>(perf::get_event_type(_event));
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switch(_pe.type)
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{
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case PERF_TYPE_HARDWARE:
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{
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_pe.config = static_cast<int>(perf::get_hw_config(_event));
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break;
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}
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case PERF_TYPE_SOFTWARE:
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{
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_pe.config = static_cast<int>(perf::get_sw_config(_event));
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break;
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}
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case PERF_TYPE_HW_CACHE:
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{
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_pe.config = static_cast<int>(perf::get_hw_cache_config(_event));
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break;
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}
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case PERF_TYPE_BREAKPOINT:
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case PERF_TYPE_TRACEPOINT:
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case PERF_TYPE_RAW:
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case PERF_TYPE_MAX:
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default:
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{
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ROCPROFSYS_THROW("unsupported perf type");
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}
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};
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if(_pe.type == PERF_TYPE_SOFTWARE &&
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(_pe.config == PERF_COUNT_SW_CPU_CLOCK || _pe.config == PERF_COUNT_SW_TASK_CLOCK))
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{
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_pe.sample_period = static_cast<uint64_t>(_period);
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}
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else
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{
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_pe.sample_period = static_cast<uint64_t>(_freq);
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}
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}
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} // namespace perf
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} // namespace rocprofsys
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