26 Sep
2016
26 Sep
'16
2:53 p.m.
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.