Re: [PATCH v8] sched/deadline: support dl task migration during cpu hotplug

2015-03-02 Thread Wanpeng Li
Hi Juri, On Mon, Mar 02, 2015 at 12:11:48PM +, Juri Lelli wrote: Hi, On 25/02/2015 11:50, 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

Re: [PATCH v8] sched/deadline: support dl task migration during cpu hotplug

2015-03-02 Thread Juri Lelli
Hi, On 25/02/2015 11:50, 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 all

[PATCH v8] sched/deadline: support dl task migration during cpu hotplug

2015-02-25 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