Re: [tip:sched/core] sched: Change the sched_class::set_cpus_allowed( ) calling context

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On 08/13/2015 04:37 PM, Peter Zijlstra wrote:
> On Thu, Aug 13, 2015 at 02:47:20PM -0400, Sasha Levin wrote:
>> > [79817.224383] bad: scheduling from the idle thread!
>> > [79817.224900] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.2.0-rc6-next-20150813-sasha-00040-g059fd6d #2431
>> > [79817.225709]  ffffffffae0c6320 ffff880051b77c00 ffffffffade7f739 ffff8800a69e15c0
>> > [79817.226419]  ffff880051b77c18 ffffffffa43c4ed3 ffff880051be8000 ffff880051b77c48
>> > [79817.227122]  ffffffffa43a7ffb ffff880051be8000 ffff8800a69e15c0 ffffffffae094d40
>> > [79817.227806] Call Trace:
>> > [79817.228039] dump_stack (lib/dump_stack.c:52)
>> > [79817.228503] dequeue_task_idle (kernel/sched/idle_task.c:45)
>> > [79817.229005] dequeue_task (kernel/sched/core.c:839)
>> > [79817.229485] do_set_cpus_allowed (kernel/sched/core.c:1178 (discriminator 9))
>> > [79817.230006] init_idle (kernel/sched/core.c:4937)
>> > [79817.230467] idle_thread_get (kernel/smpboot.c:35)
> Dhurr.. so oddly enough my actual hardware boots without issue.
> 
> But I can see how that could go wrong, does the below make your
> (virtual) machine happy again?

Seems to work fine now, thanks!


Thanks,
Sasha
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