Messages in this thread | | | Date | Wed, 30 Mar 2016 08:44:55 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v3] sched/deadline: do not try to push tasks if pinned task switches to dl |
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On Tue, Mar 29, 2016 at 06:47:22PM -0400, Steven Rostedt wrote: > I'm looking at some old changes for sched-deadline, and I stumbled > across this. As I'm working on sched deadline tests, I've discovered > that they can't have cpu affinity. They are limited to their sched > domains. That is, sched deadline tasks have whatever affinity that the > domain they happen to be in has. > > Is there a condition where rq != task_rq(p) and p->nr_cpus_allowed > 1 > isn't true?
When holding rq->lock, no. I suppose the patch was just to mirror rt and someone 'forgot' about the extra constraints on dl tasks.
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