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.
+
+config DEVTMPFS_MOUNT
+        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.
+
 config STANDALONE
         bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL
         default y