Hello! AFAIK debugfs is available only for GPL licensed modules. Try to add: MODULE_LICENSE("GPL"); -- -----Original Message----- From: swair shah <swairshah@xxxxxxxxx> Sender: kernelnewbies-bounces@xxxxxxxxxxxxxxxxx Date: Mon, 20 Aug 2012 14:15:16 To: <kernelnewbies@xxxxxxxxxxxxxxxxx> Subject: understanding Debugfs _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies