Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 4237e5fd authored by Kay Sievers's avatar Kay Sievers Committed by Greg Kroah-Hartman
Browse files

Driver-Core: devtmpfs - remove EXPERIMENTAL and flush out the description 



All major distros enable devtmpfs on recent systems, so remove
the EXPERIMENTAL flag, and make the description a bit more instructive.

Signed-off-by: default avatarKay Sievers <kay.sievers@vrfy.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 5e31d76f

drivers/base/Kconfig

+24 −17
Original line number Original line Diff line number Diff line
@@ -9,29 +9,36 @@ config UEVENT_HELPER_PATH 
	  every uevent.

	  every uevent.





config DEVTMPFS

config DEVTMPFS

	bool "Create a kernel maintained /dev tmpfs (EXPERIMENTAL)"

	bool "Maintain a devtmpfs filesystem to mount at /dev"

	depends on HOTPLUG && SHMEM && TMPFS

	depends on HOTPLUG && SHMEM && TMPFS

	help

	help

	  This creates a tmpfs filesystem, and mounts it at bootup

	  This creates a tmpfs filesystem instance early at bootup.

	  and mounts it at /dev. The kernel driver core creates device

	  In this filesystem, the kernel driver core maintains device

	  nodes for all registered devices in that filesystem. All device

	  nodes with their default names and permissions for all

	  nodes are owned by root and have the default mode of 0600.

	  registered devices with an assigned major/minor number.

	  Userspace can add and delete the nodes as needed. This is

	  Userspace can modify the filesystem content as needed, add

	  intended to simplify bootup, and make it possible to delay

	  symlinks, and apply needed permissions.

	  the initial coldplug at bootup done by udev in userspace.

	  It provides a fully functional /dev directory, where usually

	  It should also provide a simpler way for rescue systems

	  udev runs on top, managing permissions and adding meaningful

	  to bring up a kernel with dynamic major/minor numbers.

	  symlinks.

	  Meaningful symlinks, permissions and device ownership must

	  In very limited environments, it may provide a sufficient

	  still be handled by userspace.

	  functional /dev without any further help. It also allows simple

	  If unsure, say N here.

	  rescue systems, and reliably handles dynamic major/minor numbers.





config DEVTMPFS_MOUNT

config DEVTMPFS_MOUNT

	bool "Automount devtmpfs at /dev"

	bool "Automount devtmpfs at /dev, after the kernel mounted the rootfs"

	depends on DEVTMPFS

	depends on DEVTMPFS

	help

	help

	  This will mount devtmpfs at /dev if the kernel mounts the root

	  This will instruct the kernel to automatically mount the

	  filesystem. It will not affect initramfs based mounting.

	  devtmpfs filesystem at /dev, directly after the kernel has

	  If unsure, say N here.

	  mounted the root filesystem. The behavior can be overridden

	  with the commandline parameter: devtmpfs.mount=0|1.

	  This option does not affect initramfs based booting, here

	  the devtmpfs filesystem always needs to be mounted manually

	  after the roots is mounted.

	  With this option enabled, it allows to bring up a system in

	  rescue mode with init=/bin/sh, even when the /dev directory

	  on the rootfs is completely empty.





config STANDALONE

config STANDALONE

	bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL

	bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL