# SPDX-License-Identifier: GPL-2.0-onlyconfig SYSFS	bool "sysfs file system support" if EXPERT	default y	select KERNFS	help	The sysfs filesystem is a virtual filesystem that the kernel uses to	export internal kernel objects, their attributes, and their	relationships to one another. 	Users can use sysfs to ascertain useful information about the running	kernel, such as the devices the kernel has discovered on each bus and	which driver each is bound to. sysfs can also be used to tune devices	and other kernel subsystems. 	Some system agents rely on the information in sysfs to operate.	/sbin/hotplug uses device and object attributes in sysfs to assist in	delegating policy decisions, like persistently naming devices. 	sysfs is currently used by the block subsystem to mount the root	partition.  If sysfs is disabled you must specify the boot device on	the kernel boot command line via its major and minor numbers.  For	example, "root=03:01" for /dev/hda1. 	Designers of embedded systems may wish to say N here to conserve space.