On 30 November 2012 19:00, Andrey Konovalov <andrey.konova...@linaro.org> wrote:
> On 11/30/2012 02:23 PM, Viresh Kumar wrote:
>>
>> On 30 November 2012 15:22, Jon Medhurst (Tixy) <t...@linaro.org> wrote:
>>>
>>> But if they aren't different why do we need your version?
>
> To my understanding, having a separate topic for the interactive governor
> makes sense if some people need this governor, but do not want the rest of
> android code in their kernel. Viresh, is this the case? This seems to
> contradict with the initial idea of the single kernel tree (where all the
> releases should be made from), but may be valuable for the LTs/members and
> for some development work.
>
> Viresh,
> I'd like an explicit answer to why do we need a separate topic for the
> interactive governor (in addition to the android one). We must be sure we
> would do that extra work for a reason.

The basic idea was: Everybody from ARM/Linaro/Maybe somebody else, should
use the same and the latest version of this governor. And a lot of stuff really
depends on it, all power measurements etc..

I have seen people using Tixy's tree (for-example) for their tests and this
governor is only present in his android branch. Over that, what if somebody
doesn't want to get linux-linaro or android stuff in kernel and yet want to use
power with interactive governor.

That's it.

>> https://android.googlesource.com/kernel/common
>
> So it is from the same source as the android topic for llct.
> Just the topic by Viresh is a bit more recent, and is a few commits ahead of
> the android topic currently merged into llct.
>
>>>> Over that it would be available for ubuntu also.

This governor actually need somewhat better refresh rate. As it affects
the way cpus behave in our tests.

>>> I just wanted to chime in and make sure that people knew that there
>>> could be issues, because these things have a nasty habit of cropping up
>>> a few days before a monthly release, when there is little time to fix
>>> and test things.
>
> Viresh,

I accept. Just to mention, i didn't wanted this to get in for this release.

>> @John/Andrey: Current linux-linaro surely doesn't have latest interactive
>> governor in it. How do you guys suggest to get over this issue? I have few
>> ideas:
>> - John pull it from my tree, and i will keep an eye on AOSP
>
> ... the problem here is that AOSP is not the interactive governor only.
> John (or the other "Android topic guy") would have to keep an eye on the
> rest of AOSP. Keeping two pars of eyes on the same thing requires
> coordination. Or are you volunteering to take over the android topic? :)

No, i am not volunteering for it. But after getting android stuff from AOSP,
what's the harm in pulling my branch.

>> - John directly pick patches from AOSP
>
> ... and again, then you and the "Android topic guy" must synchronize
> somehow.

No. In that case i will not keep this in my tree. But it would be difficult for
the android guy to keep an eye on interactive governor updates.

--
viresh

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