linux-kernel - Re: [PATCH v3 0/6] acerhdf/thermal: adding new models, appropriate governor and minor clean up

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Date:	Thu, 15 May 2014 12:05:08 -0400
From:	Eduardo Valentin <edubezval@...il.com>
To:	Peter Feuerer <peter@...e.net>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andreas Mohr <andi@...as.de>, Borislav Petkov <bp@...e.de>,
	Zhang Rui <rui.zhang@...el.com>,
	Javi Merino <javi.merino@....com>
Subject: Re: [PATCH v3 0/6] acerhdf/thermal: adding new models, appropriate
 governor and minor clean up

Hello Peter,

On Sat, May 03, 2014 at 07:59:20PM +0200, Peter Feuerer wrote:
> 
> Hi,
> 
> This patch series is intended to:
> 
>   * Introduce "manual mode" support (Patch 1 & 2), which is needed to control
>     the fan of a few new models.
> 
>   * Add an appropriate thermal governor (Patch 3 & 4).  Manipulating and
>     fiddling around with the step-wise governor has been a very fragile thing
>     in the past and as it broke again, I used the opportunity to add a two
>     point thermal governor which implements the actual fan handling required by
>     acerhdf and puts from my point of view things straight.
> 

Can you please provide more groundings why step_wise is not working?

I had a look on bang bang proposal patch and to me, at a first glance,
step_wise should cover the target behavior. Of course, that also depend 
on the cooling device you attach to it.

Is it possible to report the problems you have with step_wise? This way
we could benefit the other users of it as well.




>   * Do some minor clean up like:
>       - adding second trip point for critical temperature (Patch 5)
>       - removing _t suffix from struct which isn't typedef and replace unsigned
>         char by u8 (Patch 6)
> 
> Thanks and kind regards,
> peter
> 
> 
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Andreas Mohr <andi@...as.de>
> Cc: Borislav Petkov <bp@...e.de>
> Cc: Zhang Rui <rui.zhang@...el.com>
> Cc: Javi Merino <javi.merino@....com>
> 
> 
> Peter Feuerer (6):
>   acerhdf: Adding support for "manual mode"
>   acerhdf: Adding support for new models
>   thermal: Added Bang-bang thermal governor
>   acerhdf: Use bang-bang thermal governor
>   acerhdf: added critical trip point
>   acerhdf: minor clean up
> 
>  drivers/platform/x86/Kconfig    |   2 +-
>  drivers/platform/x86/acerhdf.c  | 260 +++++++++++++++++++++++++---------------
>  drivers/thermal/Kconfig         |  10 ++
>  drivers/thermal/Makefile        |   1 +
>  drivers/thermal/gov_bang_bang.c | 131 ++++++++++++++++++++
>  drivers/thermal/thermal_core.c  |   5 +
>  drivers/thermal/thermal_core.h  |   8 ++
>  7 files changed, 321 insertions(+), 96 deletions(-)
>  create mode 100644 drivers/thermal/gov_bang_bang.c
> 
> -- 
> 1.9.2
> 
> --
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