* Re: Re: [RFC RESEND 0/3] Add watermark support to devfreq
@ 2014-12-16 6:42 MyungJoo Ham
0 siblings, 0 replies; only message in thread
From: MyungJoo Ham @ 2014-12-16 6:42 UTC (permalink / raw)
To: Alexandre Courbot, Arto Merilainen
Cc: 박경민, tomeu.vizoso@collabora.com,
javier.martinez@collabora.co.uk, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org,
swarren@wwwdotorg.org, thierry.reding@gmail.com,
grant.likely@linaro.org, srasal@nvidia.com
Alexandre Courbot:
>
> MyungJoo, the issue of having this feature in the core vs. having it
> as a devfreq "extension" aside, do you agree with the core idea? An
> informl ack for the idea would allow us to start leveraging this for
> the ACTMON driver. With a concrete user it will make it easier for
> everyone to understand how the pieces should fit together.
Yes, I love the idea of event/interrupt-driven DVFS and I agree with
the core idea. The remaining concern is that the current "implementation"
might be too invasive to the subsystem while it does not need to be as
a governor can always choose not to poll. And the other issues are
quite minor as well.
Actually, it appears that next-generations of some architectures
(I think I cannot publically say which and when) are going to support
this for general peripherals on the bus and the CPU soon.
Cheers,
MyungJoo
>
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