Re: [PATCH v13] sched/deadline: support dl task migration during cpu hotplug

2015-03-26 Thread Wanpeng Li
Hi Juri, On Thu, Mar 26, 2015 at 11:14:37AM +, Juri Lelli wrote: > >I think we could have better naming and the BUG_ON part could be >simplified. I'd propose something like this (sorry, it is based >on one of your previous versions.. I'm a bit struggling keeping >up with the pace ;)). Cool, th

Re: [PATCH v13] sched/deadline: support dl task migration during cpu hotplug

2015-03-26 Thread Juri Lelli
Hi, On 25/03/2015 23:47, Wanpeng Li wrote: > I observe that dl task can't be migrated to other cpus during cpu hotplug, > in addition, task may/may not be running again if cpu is added back. The > root cause which I found is that dl task will be throtted and removed from > dl rq after comsuming al

[PATCH v13] sched/deadline: support dl task migration during cpu hotplug

2015-03-25 Thread Wanpeng Li
I observe that dl task can't be migrated to other cpus during cpu hotplug, in addition, task may/may not be running again if cpu is added back. The root cause which I found is that dl task will be throtted and removed from dl rq after comsuming all budget, which leads to stop task can't pick it up