init-linum-mode.el

;; http://stackoverflow.com/questions/3875213/turning-on-linum-mode-when-in-python-c-mode
(setq linum-mode-inhibit-modes-list '(eshell-mode
                                      shell-mode
                                      profiler-report-mode
                                      ffip-diff-mode
                                      dictionary-mode
                                      erc-mode
                                      browse-kill-ring-mode
                                      dired-mode
                                      help-mode
                                      text-mode
                                      fundamental-mode
                                      jabber-roster-mode
                                      jabber-chat-mode
                                      inferior-js-mode
                                      inferior-python-mode
                                      inferior-scheme-mode
                                      ivy-occur-grep-mode ; better performance
                                      ivy-occur-mode ; better performance
                                      twittering-mode
                                      compilation-mode
                                      weibo-timeline-mode
                                      woman-mode
                                      Info-mode
                                      calc-mode
                                      calc-trail-mode
                                      comint-mode
                                      gnus-group-mode
                                      inf-ruby-mode
                                      gud-mode
                                      org-mode
                                      vc-git-log-edit-mode
                                      log-edit-mode
                                      term-mode
                                      w3m-mode
                                      speedbar-mode
                                      gnus-summary-mode
                                      gnus-article-mode
                                      calendar-mode))

(cond
 ((fboundp 'global-display-line-numbers-mode)
  (defun display-line-numbers-mode-hook-setup ()
    (setq display-line-numbers (if (or (memq major-mode linum-mode-inhibit-modes-list)
                                       ;; don't show line number for certain file extensions
                                       (should-use-minimum-resource))
                                   nil
                                 t)))
  (add-hook 'display-line-numbers-mode-hook 'display-line-numbers-mode-hook-setup)
  (global-display-line-numbers-mode t))
 (t
  (global-linum-mode t)

  (defadvice linum-on (around linum-on-inhibit-for-modes)
    "Stop the load of linum-mode for some major modes."
    (unless (member major-mode linum-mode-inhibit-modes-list)
      ad-do-it))
  (ad-activate 'linum-on)

  ;; update line number every second so `linum-mode' won't slow down Emacs
  ;; @see https://lists.gnu.org/archive/html/bug-gnu-emacs/2013-04/msg00577.html
  ;; package like `nlinum-mode' has better performance but `git-gutter' is dependent
  ;; on `linum-mode'.
  ;; So we have to use `linum-mode'.
  (setq linum-delay t)
  (defadvice linum-schedule (around my-linum-schedule () activate)
    (run-with-idle-timer 1 nil #'linum-update-current))))

(provide 'init-linum-mode)