linux-kernel - Re: [PATCH v3 0/4] thermal: re-calculate k_po/k

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Message-ID: <568CF8D2.9040906@linaro.org>
Date:	Wed, 6 Jan 2016 11:21:54 +0000
From:	Daniel Thompson <daniel.thompson@...aro.org>
To:	Javi Merino <javi.merino@....com>, Leo Yan <leo.yan@...aro.org>
Cc:	Jonathan Corbet <corbet@....net>, Zhang Rui <rui.zhang@...el.com>,
	Eduardo Valentin <edubezval@...il.com>,
	Punit Agrawal <punit.agrawal@....com>,
	Daniel Kurtz <djkurtz@...omium.org>, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH v3 0/4] thermal: re-calculate k_po/k_pu when update
 sustainable power

On 06/01/16 10:07, Javi Merino wrote:
> On Wed, Jan 06, 2016 at 04:53:44PM +0800, Leo Yan wrote:
>> k_po/k_pu are two proportional term constants and essentially they have
>> fixed ratio compared with sustainable power. In current implementation,
>> k_po and k_pu are absolute value after calculation and cannot represent
>> the ratio relationship with sustainable power; as a result, when change
>> sustainable power we cannot smoothly change proportional term constant.
>
> In v2 Daniel said that the use case was made up.  Can you elaborate on
> why we need this?

To be clear, I didn't say Leo's use case was made up. In truth I've 
never asked Leo what his use case is.

It was simply the use case that I used to illustrate a bug in the v1 
implementation which was made up (and which you asked for more details of).



Daniel.
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