[systemd-bugs] [Bug 56971] kernel patched with bfs: "Failed to create cgroup cpu:/: No such file or directory"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=56971

--- Comment #3 from Peter Bowey <support at pbcomp.com.au> ---
I can also confirm this problem report.

The "systemd" logged error is:

"systemd[1]: Failed to create cgroup cpu:/: No such file or directory"

Despite the documentation at
http://0pointer.de/blog/projects/cgroups-vs-cgroups.html stating that "(B) you
may disable all of the latter options while enabling "CONFIG_CGROUPS=y", if you
want to run systemd on your system.", it now appear to be true that this is not
enough, or has been changed in the later kernel release and/or systemd?

The above logged 'error' occurs on every boot instance [with the kernel options
= "CONFIG_CGROUPS=y" + "CONFIG_CGROUP_CPUACCT=y".

The *tested solution* [with Linux 3.8.8+] is to compile the kernel with the
additional "CONFIG_CGROUP_SCHED=y"! [no official doc's on that yet?].

Another reportor of this [same] issue was seen at
"http://lists.freedesktop.org/archives/systemd-devel/2012-June/005500.html" -
10 months ago.

Some updated documentation would be good. [via systemd and the kernel
relationship]...

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