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