fs/sysfs/Kconfig

Source file repositories/reference/linux-study-clean/fs/sysfs/Kconfig

File Facts

System
Linux kernel
Corpus path
fs/sysfs/Kconfig
Extension
[no extension]
Size
1053 bytes
Lines
26
Domain
Core OS
Bucket
VFS And Filesystem Core
Inferred role
Core OS: build/configuration rule
Status
atlas-only

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0-only
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.

Annotation

Implementation Notes