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Date: Tue, 10 Nov 2020 02:03:45 -0800
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...hat.com>,
Namhyung Kim <namhyung@...nel.org>,
linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>,
Jin Yao <yao.jin@...ux.intel.com>,
John Garry <john.garry@...wei.com>,
Paul Clarke <pc@...ibm.com>, kajoljain <kjain@...ux.ibm.com>
Cc: Stephane Eranian <eranian@...gle.com>,
Sandeep Dasgupta <sdasgup@...gle.com>,
linux-perf-users@...r.kernel.org, Ian Rogers <irogers@...gle.com>
Subject: [RFC PATCH 11/12] perf topdown-parser: Main driver.
From: Sandeep Dasgupta <sdasgup@...gle.com>
Invoke the necessary configuration reading and parsing, then code
generation. Handles command line arguments.
Add a minor README.
Co-authored-by: Stephane Eranian <eranian@...gle.com>
Co-authored-by: Ian Rogers <irogers@...gle.com>
Signed-off-by: Ian Rogers <irogers@...gle.com>
Signed-off-by: Sandeep Dasgupta <sdasgup@...gle.com>
---
tools/perf/pmu-events/topdown-parser/README | 5 +
.../topdown-parser/topdown_parser_main.cpp | 155 ++++++++++++++++++
2 files changed, 160 insertions(+)
create mode 100644 tools/perf/pmu-events/topdown-parser/README
create mode 100644 tools/perf/pmu-events/topdown-parser/topdown_parser_main.cpp
diff --git a/tools/perf/pmu-events/topdown-parser/README b/tools/perf/pmu-events/topdown-parser/README
new file mode 100644
index 000000000000..7f100792b00c
--- /dev/null
+++ b/tools/perf/pmu-events/topdown-parser/README
@@ -0,0 +1,5 @@
+Topdown parser and code generator
+=================================
+
+The topdown parser processes a TMA_Metrics.csv file and generates
+Intel specific metrics from the data in the spreadsheet cells.
\ No newline at end of file
diff --git a/tools/perf/pmu-events/topdown-parser/topdown_parser_main.cpp b/tools/perf/pmu-events/topdown-parser/topdown_parser_main.cpp
new file mode 100644
index 000000000000..ba9acd32726e
--- /dev/null
+++ b/tools/perf/pmu-events/topdown-parser/topdown_parser_main.cpp
@@ -0,0 +1,155 @@
+/*
+ * Copyright 2020 Google LLC.
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <getopt.h>
+#include <stdlib.h>
+
+#include <iostream>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include "code_gen_target.h"
+#include "configuration.h"
+#include "csvreader.h"
+#include "dependence_dag_utils.h"
+#include "event_info.h"
+#include "logging.h"
+
+namespace topdown_parser
+{
+namespace
+{
+/**
+ * Printing usage model
+ */
+[[noreturn]] void ShowUsage()
+{
+ std::cout
+ << "\n"
+ " Usage: topdown_parser --csv-file <csv input file>\n"
+ " --events-data-dir <path of event "
+ "encoding JSon files>\n"
+ " --config-file <path to "
+ "configuration.json>\n"
+ " --output-path <path to "
+ "output the topdown file(s)>\n"
+ " [Options]\n"
+ " Synopsis: Auto-generates topdown.c \n\n"
+ " Options\n"
+ "\t--dump-events : Dump the unique events for each metric.\n"
+ "generated topdown file. Used for testing.\n"
+ "\t--help : Show help\n";
+ exit(0);
+}
+
+/**
+ * The input csv file name specifying formula encoding for topdown
+ * metric
+ */
+char *g_CsvFile = nullptr;
+
+/**
+ * ProcessArgs parses command-line arguments
+ */
+bool ProcessArgs(int argc, char **argv)
+{
+ // The following command-line arguments to the program
+ // todown_parser are required: --csv-file <file>,
+ // --events-data-dir <dir>, --config-file <file> --output-path
+ // <path>
+ if (argc < 9) {
+ ShowUsage();
+ return false;
+ }
+
+ const char *const short_opts = "f:a:z:hdt";
+ const option long_opts[] = {
+ { "csv-file", required_argument, nullptr, 'f' },
+ { "events-data-dir", required_argument, nullptr, 'a' },
+ { "config-file", required_argument, nullptr, 'z' },
+ { "output-path", required_argument, nullptr, 'o' },
+ { "dump-events", no_argument, nullptr, 'd' },
+ { "help", no_argument, nullptr, 'h' },
+ { nullptr, no_argument, nullptr, 0 }
+ };
+
+ while (true) {
+ const auto opt =
+ getopt_long(argc, argv, short_opts, long_opts, nullptr);
+
+ if (opt == -1)
+ break;
+
+ switch (opt) {
+ case 'f':
+ g_CsvFile = optarg;
+ break;
+
+ case 'a':
+ kConfigParams->event_data_dir_ = optarg;
+ kConfigParams->event_data_dir_ += "/";
+ break;
+
+ case 'z':
+ kConfigParams->config_file_ = optarg;
+ break;
+
+ case 'o':
+ kConfigParams->output_path_ = optarg;
+ break;
+
+ case 'd':
+ g_DumpEvents = true;
+ break;
+
+ case 'h':
+ case '?':
+ default:
+ ShowUsage();
+ return false;
+ }
+ }
+
+ INFO("csv filename: |" << g_CsvFile << "|");
+ INFO("events data dir: |" << kConfigParams->event_data_dir_ << "|");
+ INFO("config file : |" << kConfigParams->config_file_ << "|");
+ return true;
+}
+
+} // namespace
+
+} // namespace topdown_parser
+
+/**
+ * Main driver function for generating topdown files.
+ */
+int main(int argc, char *argv[])
+{
+ bool process_arg_stat = topdown_parser::ProcessArgs(argc, argv);
+ if (!process_arg_stat) {
+ FATAL("Failed to process the command-line arguments");
+ }
+
+ // Read the configuration file "configuration.json"
+ int read_config_stat = topdown_parser::ReadConfig();
+ if (read_config_stat != 0) {
+ FATAL("Failed to read configuration file");
+ }
+
+ // Read the input csv file
+ topdown_parser::CsvReader reader(topdown_parser::g_CsvFile);
+ std::vector<std::vector<std::string> > records = reader.getData();
+ std::unordered_map<std::string, topdown_parser::MappedData>
+ dependence_dag = topdown_parser::ProcessRecords(&records);
+
+ // Read and process the json files specifying the event encodings
+ topdown_parser::ProcessEventEncodings();
+
+ // Generate topdown files for a specific target (or purpose)
+ topdown_parser::CodeGenTarget(dependence_dag);
+
+ return 0;
+}
--
2.29.2.222.g5d2a92d10f8-goog
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