Takenori Nagano <t-nagano at ah.jp.nec.com> writes: > This patch adds new notifier function tunable_notifier_chain. Its base is > atomic_notifier_chain. > +/** > + * tunable_notifier_chain_register - Add notifier to an tunable notifier chain > + * @nh: Pointer to head of the tunable notifier chain > + * @n: New entry in notifier chain > + * @name: Pointer to the name of this notifier chain > + * @desc: Pointer to the description of new entry > + * > + * Adds a notifier to an tunable notifier chain and makes control dir. > + * > + * Returns zero on success or %-ENODEV on failure. > + */ > + > +int tunable_notifier_chain_register(struct tunable_notifier_head *nh, > + struct tunable_notifier_block *n, char *name, char *desc) > +{ > + unsigned long flags; > + int ret = -EINVAL; > + struct dentry *nh_dir, *nb_dir, *pri_dentry, *desc_dentry = NULL; > + > + if (!name) > + goto nb_fail; > + > + ret = -ENOMEM; > + if (!nh->dir) { > + nh_dir = debugfs_create_dir(nh->name, NULL); Hmm. debugfs does not appear to be an appropriate place to create files that are supposed to be part of a serious user space interface. Eric