path: root/drivers/base/Kconfig
diff options
Diffstat (limited to 'drivers/base/Kconfig')
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 8f006f96ff53..ee377270beb9 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -8,6 +8,31 @@ config UEVENT_HELPER_PATH
Path to uevent helper program forked by the kernel for
every uevent.
+config DEVTMPFS
+ bool "Create a kernel maintained /dev tmpfs (EXPERIMENTAL)"
+ depends on HOTPLUG && SHMEM && TMPFS
+ help
+ This creates a tmpfs filesystem, and mounts it at bootup
+ and mounts it at /dev. The kernel driver core creates device
+ nodes for all registered devices in that filesystem. All device
+ nodes are owned by root and have the default mode of 0600.
+ Userspace can add and delete the nodes as needed. This is
+ intended to simplify bootup, and make it possible to delay
+ the initial coldplug at bootup done by udev in userspace.
+ It should also provide a simpler way for rescue systems
+ to bring up a kernel with dynamic major/minor numbers.
+ Meaningful symlinks, permissions and device ownership must
+ still be handled by userspace.
+ If unsure, say N here.
+ bool "Automount devtmpfs at /dev"
+ depends on DEVTMPFS
+ help
+ This will mount devtmpfs at /dev if the kernel mounts the root
+ filesystem. It will not affect initramfs based mounting.
+ If unsure, say N here.
bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL
default y

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