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在设备驱动模型中，我们用kobject表示设备的基类，而一些相同的设备构成集合，即kset：
/*** struct kset - a set of kobjects of a specific type, belonging to a specific subsystem.** A kset defines a group of kobjects. They can be individually* different "types" but overall these kobjects all want to be grouped* together and operated on in the same manner. ksets are used to* define the attribute callbacks and other common events that happen to* a kobject.** @list: the list of all kobjects for this kset* @list_lock: a lock for iterating over the kobjects* @kobj: the embedded kobject for this kset (recursion, isn't it fun...)* @uevent_ops: the set of uevent operations for this kset. These are* called whenever a kobject has something happen to it so that the kset* can add new environment variables, or filter out the uevents if so* desired.*/ struct kset {struct list_head list;spinlock_t list_lock;struct kobject kobj;const struct kset_uevent_ops *uevent_ops; };
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