kobject: add kobject_init_ng function (e86000d0) · Commits · 戴 / test

include/linux/kobject.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -79,6 +79,7 @@ static inline const char * kobject_name(const struct kobject * kobj)
		}

		extern void kobject_init(struct kobject *);
		extern void kobject_init_ng(struct kobject kobj, struct kobj_type ktype);
		extern int __must_check kobject_add(struct kobject *);
		extern void kobject_del(struct kobject *);

+42 −0

Original line number	Diff line number	Diff line
		@@ -282,6 +282,48 @@ int kobject_set_name(struct kobject kobj, const char fmt, ...)
		}
		EXPORT_SYMBOL(kobject_set_name);

		/**
		* kobject_init_ng - initialize a kobject structure
		* @kobj: pointer to the kobject to initialize
		* @ktype: pointer to the ktype for this kobject.
		*
		* This function will properly initialize a kobject such that it can then
		* be passed to the kobject_add() call.
		*
		* After this function is called, the kobject MUST be cleaned up by a call
		* to kobject_put(), not by a call to kfree directly to ensure that all of
		* the memory is cleaned up properly.
		*/
		void kobject_init_ng(struct kobject kobj, struct kobj_type ktype)
		{
		char *err_str;

		if (!kobj) {
		err_str = "invalid kobject pointer!";
		goto error;
		}
		if (!ktype) {
		err_str = "must have a ktype to be initialized properly!\n";
		goto error;
		}
		if (atomic_read(&kobj->kref.refcount)) {
		/* do not error out as sometimes we can recover */
		printk(KERN_ERR "kobject: reference count is already set, "
		"something is seriously wrong.\n");
		dump_stack();
		}

		kref_init(&kobj->kref);
		INIT_LIST_HEAD(&kobj->entry);
		kobj->ktype = ktype;
		return;

		error:
		printk(KERN_ERR "kobject: %s\n", err_str);
		dump_stack();
		}
		EXPORT_SYMBOL(kobject_init_ng);

		/**
		* kobject_rename - change the name of an object
		* @kobj: object in question.