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Signed-off-by: Alexey Dobriyan <[email protected]>
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Alexey Dobriyan
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config SYSFS | ||
bool "sysfs file system support" if EMBEDDED | ||
default y | ||
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. | ||
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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. | ||
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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. | ||
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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. | ||
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Designers of embedded systems may wish to say N here to conserve space. |