The System.map is directly related to it, in that this file is produced by nm on the whole kernel program – just like nm lists the symbols and their types for any small object programs.
而System.map則是直接與其相關，因為這個檔案是在整個核心程式上由nm所產生的 － 就像nm列出任意小的目標程式的符號及它們的類型。