On 12/12/2013 05:28 AM, Ingo Molnar wrote:
>>
>> The reason we use thread_info::flags is because we need to write
>> TIF_NEED_RESCHED into it to wake up anyhow.
>>
>> Using another cacheline would mean the wakeup path would need to write a
>> second cross cpu cacheline -- that is badness too.
>>
>> So no, I don't think we want to listen to another line.
>
Right, okay, so that's the implicit wakeup. However, I would think the
CLFLUSH would hurt a lot more.
-hpa
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
