| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <stdio.h> |
| |
| #include <memory> |
| #include <regex> |
| #include <string> |
| |
| #include "ETMDecoder.h" |
| #include "command.h" |
| #include "record_file.h" |
| #include "thread_tree.h" |
| #include "utils.h" |
| |
| using namespace simpleperf; |
| |
| namespace { |
| |
| using AddrPair = std::pair<uint64_t, uint64_t>; |
| |
| struct AddrPairHash { |
| size_t operator()(const AddrPair& ap) const noexcept { |
| size_t seed = 0; |
| HashCombine(seed, ap.first); |
| HashCombine(seed, ap.second); |
| return seed; |
| } |
| }; |
| |
| struct BinaryInfo { |
| std::unordered_map<AddrPair, uint64_t, AddrPairHash> range_count_map; |
| std::unordered_map<AddrPair, uint64_t, AddrPairHash> branch_count_map; |
| }; |
| |
| class InjectCommand : public Command { |
| public: |
| InjectCommand() |
| : Command("inject", "convert etm instruction tracing data into instr ranges", |
| // clang-format off |
| "Usage: simpleperf inject [options]\n" |
| "--binary binary_name Generate data only for binaries matching binary_name regex.\n" |
| "-i <file> input perf.data, generated by recording cs-etm event type.\n" |
| " Default is perf.data.\n" |
| "-o <file> output file. Default is perf_inject.data.\n" |
| " The output is in text format accepted by AutoFDO.\n" |
| "--dump-etm type1,type2,... Dump etm data. A type is one of raw, packet and element.\n" |
| "--symdir <dir> Look for binaries in a directory recursively.\n" |
| // clang-format on |
| ), |
| output_fp_(nullptr, fclose) {} |
| |
| bool Run(const std::vector<std::string>& args) override { |
| if (!ParseOptions(args)) { |
| return false; |
| } |
| record_file_reader_ = RecordFileReader::CreateInstance(input_filename_); |
| if (!record_file_reader_) { |
| return false; |
| } |
| record_file_reader_->LoadBuildIdAndFileFeatures(thread_tree_); |
| output_fp_.reset(fopen(output_filename_.c_str(), "w")); |
| if (!output_fp_) { |
| PLOG(ERROR) << "failed to write to " << output_filename_; |
| return false; |
| } |
| if (!record_file_reader_->ReadDataSection([this](auto r) { return ProcessRecord(r.get()); })) { |
| return false; |
| } |
| PostProcess(); |
| output_fp_.reset(nullptr); |
| return true; |
| } |
| |
| private: |
| bool ParseOptions(const std::vector<std::string>& args) { |
| for (size_t i = 0; i < args.size(); i++) { |
| if (args[i] == "--binary") { |
| if (!NextArgumentOrError(args, &i)) { |
| return false; |
| } |
| binary_name_regex_ = args[i]; |
| } else if (args[i] == "-i") { |
| if (!NextArgumentOrError(args, &i)) { |
| return false; |
| } |
| input_filename_ = args[i]; |
| } else if (args[i] == "-o") { |
| if (!NextArgumentOrError(args, &i)) { |
| return false; |
| } |
| output_filename_ = args[i]; |
| } else if (args[i] == "--dump-etm") { |
| if (!NextArgumentOrError(args, &i) || !ParseEtmDumpOption(args[i], &etm_dump_option_)) { |
| return false; |
| } |
| } else if (args[i] == "--symdir") { |
| if (!NextArgumentOrError(args, &i) || !Dso::AddSymbolDir(args[i])) { |
| return false; |
| } |
| } else { |
| ReportUnknownOption(args, i); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool ProcessRecord(Record* r) { |
| thread_tree_.Update(*r); |
| if (r->type() == PERF_RECORD_AUXTRACE_INFO) { |
| auto instr_range_callback = [this](auto& range) { ProcessInstrRange(range); }; |
| etm_decoder_ = ETMDecoder::Create(*static_cast<AuxTraceInfoRecord*>(r), thread_tree_); |
| if (!etm_decoder_) { |
| return false; |
| } |
| etm_decoder_->EnableDump(etm_dump_option_); |
| etm_decoder_->RegisterCallback(instr_range_callback); |
| } else if (r->type() == PERF_RECORD_AUX) { |
| AuxRecord* aux = static_cast<AuxRecord*>(r); |
| uint64_t aux_size = aux->data->aux_size; |
| if (aux_size > 0) { |
| if (aux_data_buffer_.size() < aux_size) { |
| aux_data_buffer_.resize(aux_size); |
| } |
| if (!record_file_reader_->ReadAuxData(aux->Cpu(), aux->data->aux_offset, |
| aux_data_buffer_.data(), aux_size)) { |
| LOG(ERROR) << "failed to read aux data"; |
| return false; |
| } |
| return etm_decoder_->ProcessData(aux_data_buffer_.data(), aux_size); |
| } |
| } |
| return true; |
| } |
| |
| std::unordered_map<Dso*, bool> dso_filter_cache; |
| bool FilterInstrRange(const ETMInstrRange& instr_range) { |
| auto lookup = dso_filter_cache.find(instr_range.dso); |
| if (lookup != dso_filter_cache.end()) { |
| return lookup->second; |
| } |
| bool match = std::regex_search(instr_range.dso->GetDebugFilePath(), |
| binary_name_regex_); |
| dso_filter_cache.insert({instr_range.dso, match}); |
| return match; |
| } |
| |
| void ProcessInstrRange(const ETMInstrRange& instr_range) { |
| if (!FilterInstrRange(instr_range)) { |
| return; |
| } |
| |
| auto& binary = binary_map_[instr_range.dso->GetDebugFilePath()]; |
| binary.range_count_map[AddrPair(instr_range.start_addr, instr_range.end_addr)] += |
| instr_range.branch_taken_count + instr_range.branch_not_taken_count; |
| if (instr_range.branch_taken_count > 0) { |
| binary.branch_count_map[AddrPair(instr_range.end_addr, instr_range.branch_to_addr)] += |
| instr_range.branch_taken_count; |
| } |
| } |
| |
| void PostProcess() { |
| for (const auto& pair : binary_map_) { |
| const std::string& binary_path = pair.first; |
| const BinaryInfo& binary = pair.second; |
| |
| // Write range_count_map. |
| fprintf(output_fp_.get(), "%zu\n", binary.range_count_map.size()); |
| for (const auto& pair2 : binary.range_count_map) { |
| const AddrPair& addr_range = pair2.first; |
| uint64_t count = pair2.second; |
| |
| fprintf(output_fp_.get(), "%" PRIx64 "-%" PRIx64 ":%" PRIu64 "\n", addr_range.first, |
| addr_range.second, count); |
| } |
| |
| // Write addr_count_map. |
| fprintf(output_fp_.get(), "0\n"); |
| |
| // Write branch_count_map. |
| fprintf(output_fp_.get(), "%zu\n", binary.branch_count_map.size()); |
| for (const auto& pair2 : binary.branch_count_map) { |
| const AddrPair& branch = pair2.first; |
| uint64_t count = pair2.second; |
| |
| fprintf(output_fp_.get(), "%" PRIx64 "->%" PRIx64 ":%" PRIu64 "\n", branch.first, |
| branch.second, count); |
| } |
| |
| // Write the binary path in comment. |
| fprintf(output_fp_.get(), "// %s\n\n", binary_path.c_str()); |
| } |
| } |
| |
| std::regex binary_name_regex_{""}; // Default to match everything. |
| std::string input_filename_ = "perf.data"; |
| std::string output_filename_ = "perf_inject.data"; |
| ThreadTree thread_tree_; |
| std::unique_ptr<RecordFileReader> record_file_reader_; |
| ETMDumpOption etm_dump_option_; |
| std::unique_ptr<ETMDecoder> etm_decoder_; |
| std::vector<uint8_t> aux_data_buffer_; |
| std::unique_ptr<FILE, decltype(&fclose)> output_fp_; |
| |
| // Store results for AutoFDO. |
| std::unordered_map<std::string, BinaryInfo> binary_map_; |
| }; |
| |
| } // namespace |
| |
| void RegisterInjectCommand() { |
| return RegisterCommand("inject", [] { return std::unique_ptr<Command>(new InjectCommand); }); |
| } |