[Buildroot] [PATCH v3 0/5] udev is now provided by systemd or eudev

Thomas Petazzoni thomas.petazzoni at free-electrons.com
Wed Nov 13 23:53:29 UTC 2013

Dear Eric Le Bihan,

On Wed,  6 Nov 2013 16:34:33 +0100, Eric Le Bihan wrote:

> This series converts udev to a virtual package, either provided by systemd or
> eudev.
> Starting with version 183, udev has been merged into systemd. This forces the
> use of systemd as the init system if /dev is to be dynamically managed by
> udev. eudev is a fork of udev, maintained by Gentoo, but isolated from
> systemd, so it can be used with any init system.
> Systemd has been bumped to v207 and a new eudev package has been added.
> Version 1.3 of eudev is in sync with systemd v207.
> The bump of systemd to v207 also introduces new options, like the activation
> of the journal gateway.

I've tested this patch series. I managed to get the eudev part working
without any problem.

However, while your demo defconfig work fine, I was not able to get
a working configuration started from scratch. I.e, I have the following
Buildroot configuration:


and I boot it with the same kernel image that I used to boot the eudev
example (under the ARM Versatile Qemu emulation). The kernel has
cgroup support. But the boot hangs at:

Freeing unused kernel memory: 120K (c0399000 - c03b7000)
systemd[1]: Failed to mount /dev/shm: Invalid argument

Also, I've noted that kconfig complains about a dependency problem
after applying your patch set:

BR2_PACKAGE_KMOD_TOOLS which has unmet direct dependencies

Best regards,

Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering

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