| config 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. |