On Thu, Sep 22, 2016 at 02:25:18PM +0200, Peter Zijlstra wrote: > On Tue, Sep 20, 2016 at 03:06:04PM +0200, Vincent Guittot wrote: > > > Also, even it things magically worked out, its still very icky to mix > > > the normalized vruntime into things. > > > > I agree > > In any case, I pushed out a bunch of patches to: > > git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/tmp > > they appear to be able to build a kernel, but that's not much testing.
Hurmph, its buggered for cgroups. When we get the newidle lockbreak between dequeue and put_prev_task, the load-balance pull can add a task to the 'current' cgroup. Which suggests we cannot do that enqueue_entity() optimization, unless we fix that dequeue+put atomicy muck.
