[libvirt] [PATCH 9/9] qemu_cgroup: assert threading cgroup layout for machine cgroup

Daniel P. Berrange berrange at redhat.com
Fri Feb 26 12:02:52 UTC 2016


On Fri, Feb 26, 2016 at 12:57:38PM +0100, Henning Schild wrote:
> On Fri, 26 Feb 2016 11:22:07 +0000
> "Daniel P. Berrange" <berrange at redhat.com> wrote:
> 
> > On Tue, Feb 23, 2016 at 04:58:44PM +0100, Henning Schild wrote:
> > > Make sure the thread related controls of the machine cgroup never
> > > get any tasks assigned.
> > > 
> > > Signed-off-by: Henning Schild <henning.schild at siemens.com>
> > > ---
> > >  src/qemu/qemu_cgroup.c | 14 ++++++++++++--
> > >  1 file changed, 12 insertions(+), 2 deletions(-)  
> > 
> > NACK This also won't work for same reason as previous patch
> 
> Having that in place can still be useful after we have sorted out the
> random result of what systemd gave us.
> Is the general idea of such an assertion a good idea, and should i
> adopt it according to comments?
> At the moment i just used the assertion mask in the only code-path that
> adds tasks within libvirt. If we have to deal with manipulation from
> the outside, it might be a good idea to introduce more assertions based
> on the mask.

Without patch 4 though, there's nowhere you can put this afaict.


Regards,
Daniel
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