export_call_return 518 tools/perf/util/db-export.c if (dbe->export_call_return) export_call_return 519 tools/perf/util/db-export.c return dbe->export_call_return(dbe, cr); export_call_return 58 tools/perf/util/db-export.h int (*export_call_return)(struct db_export *dbe,