Re: [PATCH] sched:skip loop non-idle cpus after find an idle cpu while find_idlest_cpu

[Yao Dongdong <yaodongdong@huawei.com>]

On 2014/10/27 16:04, Srikar Dronamraju wrote:
> * Yao Dongdong <yaodongdong@huawei.com> [2014-10-27 11:13:17]:
>
>> Idle cpu is idler than non-idle cpu, so we needn't loop non-idle cpus after find an idle cpu.
>>
> While this check looks good,
> I dont see how we are avoiding a loop?
>
> Are you suggesting that we break of the for loop once we set
> shallowest_idle_cpu?
>
Thanks for your review.

I agree that the submit message is a bit misleading, what this patch do is just avoiding search for least_loaded_cpu
in non-idle cpus.

    sched:add check of shallowest_idle_cpu before search for least_loaded_cpu

    Idle cpu is idler than non-idle cpu, so we needn't search for least_loaded_cpu
    after we have found an idle cpu.

what about this?

Thanks,
Yao Dongdong