Messages in this thread |  | | | Subject | Re: cgroup scheduling: Adding kthreadd to a non-RT cgroup can deadlock the kernel | | From | Peter Zijlstra <> | | Date | Wed, 05 Jan 2011 16:18:30 +0100 |
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On Wed, 2011-01-05 at 10:02 -0500, Nelson Elhage wrote: > Ok. I bothered reporting this here since the kernel /does/ try to prevent you > from shooting yourself in the foot in related ways, by moving existing > SCHED_FIFO tasks into a cgroup without any RT runtime, so I figured it might > make sense to add a check here. libcgroup, for example, will try to move all > processes into a default cgroup, ignoring errors, and relies on the kernel to > prevent it from shooting itself in the foot. > > It sounds like you consider that behavior a bug, though, so I'll go report this > bug there.
Right, so we try to catch obvious cases, but its near impossible to catch all cases.
And its not only the scheduler controller, I bet you can get into trouble with some of the other controllers as well.
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