Commit 46dde29f authored by eric.le.bihan.dev@free.fr's avatar eric.le.bihan.dev@free.fr Committed by Peter Korsgaard
Browse files

manual: update /dev management section. 



This patch updates the /dev management section in the manual with information
about eudev, which replaces udev.

Signed-off-by: default avatarEric Le Bihan <eric.le.bihan.dev@free.fr>
Acked-by: default avatarThomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Acked-by: default avatarSamuel Martin <s.martin49@gmail.com>
Signed-off-by: default avatarPeter Korsgaard <peter@korsgaard.com>
parent 2c66e442

docs/manual/configure.txt

+11 −9
Original line number Diff line number Diff line
@@ -216,7 +216,7 @@ x86_64 target, you have to generate a cross-compilation toolchain with 
Buildroot or crosstool-NG.



If you want to generate a custom toolchain for your project, that can

be used as an external toolchain in Buildroot, our recommandation is

be used as an external toolchain in Buildroot, our recommendation is

definitely to build it with http://crosstool-ng.org[crosstool-NG]. We

recommend to build the toolchain separately from Buildroot, and then

_import_ it in Buildroot using the external toolchain backend.
@@ -310,22 +310,24 @@ different solutions to handle the +/dev+ directory : 
   about +mdev+ and the syntax of its configuration file, see

   http://git.busybox.net/busybox/tree/docs/mdev.txt.



 * The fourth solution is *Dynamic using udev*. This method also

 * The fourth solution is *Dynamic using eudev*. This method also

   relies on the _devtmpfs_ virtual filesystem detailed above, but

   adds the +udev+ userspace daemon on top of it. +udev+ is a daemon

   adds the +eudev+ userspace daemon on top of it. +eudev+ is a daemon

   that runs in the background, and gets called by the kernel when a

   device gets added or removed from the system. It is a more

   heavyweight solution than +mdev+, but provides higher flexibility

   and is sometimes mandatory for some system components (systemd for

   example). +udev+ is the mechanism used in most desktop Linux

   distributions. For more details about +udev+, see

   http://en.wikipedia.org/wiki/Udev.

   heavyweight solution than +mdev+, but provides higher flexibility.

   +eudev+ is a standalone version of +udev+, the original userspace

   daemon used in most desktop Linux distributions, which is now part

   of Systemd. For more details, see http://en.wikipedia.org/wiki/Udev.



The Buildroot developers recommandation is to start with the *Dynamic

The Buildroot developers recommendation is to start with the *Dynamic

using devtmpfs only* solution, until you have the need for userspace

to be notified when devices are added/removed, or if firmwares are

needed, in which case *Dynamic using mdev* is usually a good solution.



Note that if +systemd+ is chosen as init system, /dev management will

be performed by the +udev+ program provided by +systemd+.



init system

~~~~~~~~~~~