perf_config_from_file 661 tools/perf/util/config.c return perf_config_from_file(collect_config, config_exclusive_filename, set); perf_config_from_file 663 tools/perf/util/config.c if (perf_config_from_file(collect_config, perf_etc_perfconfig(), set) < 0) perf_config_from_file 697 tools/perf/util/config.c ret = perf_config_from_file(collect_config, user_config, set);