[libvirt] [PATCH 0/3] several cgroups/cpuset fixes

[Henning Schild]

Hi,

i already explained some of the cgroup problems in some detail so i
will not do that again.
https://www.redhat.com/archives/libvir-list/2015-October/msg00876.html

I managed to solve some of the problems in the current codebase, and
am now sharing the patches. But they are really just half of what i 
had to change to get libvirt to behave in a system with isolated cpus.

Other changes/hacks i am not sending here because they do not work for
the general case:
- create machine.slice before starting libvirtd (smaller than root)
  ... and hope it wont grow
- disabling cpuset.cpus inheritance in libvirtd
- allowing only xml with fully specified cputune
- set machine cpuset to (vcpupins | emulatorpin)

I am not sure how useful the individual fixes are, i am sending them
as concrete examples for the problems i described earlier. And i am
hoping that will start a discussion.

Henning

Henning Schild (3):
  util: cgroups do not implicitly add task to new machine cgroup
  qemu: do not put a task into machine cgroup
  qemu cgroups: move new threads to new cgroup after cpuset is set up

 src/lxc/lxc_cgroup.c   |  6 ++++++
 src/qemu/qemu_cgroup.c | 23 ++++++++++++++---------
 src/util/vircgroup.c   | 22 ----------------------
 3 files changed, 20 insertions(+), 31 deletions(-)

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2.4.10