Re: [RFC v1 0/3] driver-core: add asynch module loading support

From: Dmitry Torokhov
Date: Sun Aug 31 2014 - 18:45:44 EST


On August 31, 2014 3:32:19 PM PDT, Arjan van de Ven <arjan@xxxxxxxxxxxxxxx> wrote:
>On 8/31/2014 1:06 PM, åçé wrote:
>> Hi, folks
>>
>> I'm back to this discussion,
>>
>> The original requirement of my first RFC patchset is mainly for
>Android Smartphone use case:
>>
>> 1. We want light on LCD and draw a logo immediately after power key
>press(don't consider uboot or lk biotloader here).
>> 2. We want the whole kernel boot fast to give user the Android Launch
>deaktop
>> 3. The modem initialization/reset is slow
>> 4. The Touchpad firmware upgrade is slow
>> 5. We have many cpu cores(up to 8 in latest exynos 5430 and
>MT6595...)
>> 6. We have few schedulable/parallellizable threads
>> 7. We compiled all of the modules in the kernel(stupid? avoid
>modprobe...but lose parallelization in userspace)
>>
>> So, I think about is that possible to async most of the probes, but
>still reserve the requred dependencies to let them still work as
>expected.
>
>you can boot a whole kernel including all graphics in less than 0.5
>seconds, even without this patchset.


You forgot to add "on certain subset of hardware and configuration".

Thanks.

--
Dmitry
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