2016-06-08 18:01 GMT+08:00 Paolo Bonzini :
>
>
> On 08/06/2016 05:05, Wanpeng Li wrote:
>> From: Wanpeng Li
>>
>> Commit e9532e69b8d1 ("sched/cputime: Fix steal time accounting vs. CPU
>> hotplug")
>> set rq->prev_* to 0 after a cpu hotplug comes back in order to fix the
>> scenario:
>>
>> | ste
On 08/06/2016 05:05, Wanpeng Li wrote:
> From: Wanpeng Li
>
> Commit e9532e69b8d1 ("sched/cputime: Fix steal time accounting vs. CPU
> hotplug")
> set rq->prev_* to 0 after a cpu hotplug comes back in order to fix the
> scenario:
>
> | steal is smaller than rq->prev_steal_time we end up wit
From: Wanpeng Li
Commit e9532e69b8d1 ("sched/cputime: Fix steal time accounting vs. CPU
hotplug")
set rq->prev_* to 0 after a cpu hotplug comes back in order to fix the scenario:
| steal is smaller than rq->prev_steal_time we end up with an insane large
| value which then gets added to rq->pre
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