Re: cgroup scheduling: Adding kthreadd to a non-RT cgroup candeadlock the kernel

[Peter Zijlstra]

On Tue, 2011-01-04 at 23:54 -0500, Nelson Elhage wrote:
> Hi,
> 
> I've found a bug where, on CONFIG_RT_GROUP_SCHED systems, adding the kthreadd
> task to a cgroup with cpu.rt_runtime_us = 0 (as some cgroup configuration
> scripts do, when they move all processes into a default cgroup), can result in
> deadlocks in the kernel.

IMHO its a bug to move kthreadd into a cgroup. Simply don't do that.


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