Edit file File name : systemtap-init.el Content :(autoload 'systemtap-mode "systemtap-mode.el") (setq auto-mode-alist (append '(("\\.stp$" . systemtap-mode)) auto-mode-alist)) (setq auto-mode-alist (append '(("\\.stpm$" . systemtap-mode)) auto-mode-alist)) Save