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Groups > linux.kernel > #1366915
| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v3] sched/deadline: do not try to push tasks if pinned task switches to dl |
| Date | 2016-03-30 08:50 +0200 |
| Message-ID | <rii6Z-1t9-1@gated-at.bofh.it> (permalink) |
| References | <odS82-1JI-15@gated-at.bofh.it> <oe0yC-67f-33@gated-at.bofh.it> <riaCt-4qk-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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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Re: [PATCH v3] sched/deadline: do not try to push tasks if pinned task switches to dl Steven Rostedt <rostedt@goodmis.org> - 2016-03-30 00:50 +0200
Re: [PATCH v3] sched/deadline: do not try to push tasks if pinned task switches to dl Peter Zijlstra <peterz@infradead.org> - 2016-03-30 08:50 +0200
Re: [PATCH v3] sched/deadline: do not try to push tasks if pinned task switches to dl Wanpeng Li <kernellwp@gmail.com> - 2016-03-30 10:00 +0200
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