I'd like to allow userspace applications to track and display state changes (without polling) in a driver that exports attributes via sysfs. What is the best way to notify userspace applications when a sysfs exported attribute changes? In particular I wanted to drive the notification in the *_store() function of the sysfs attribute. Also, ideally, the mechanism would allow multiple userspace applications to hook into the notification. Thanks, Rick -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html