From: Greg KH <greg@kroah.com>
To: Amit Daniel Kachhap <amit.kachhap@linaro.org>
Cc: linaro-dev@lists.linaro.org, patches@linaro.org,
linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
linux-pm@lists.linux-foundation.org, rob.lee@linaro.org
Subject: Re: [RFC PATCH] thermal: Add support to report cooling statistics achieved by cooling devices
Date: Mon, 6 Feb 2012 09:03:49 -0800 [thread overview]
Message-ID: <20120206170348.GA19749@kroah.com> (raw)
In-Reply-To: <20120206165658.GA28687@atrey.karlin.mff.cuni.cz>
On Mon, Feb 06, 2012 at 05:56:58PM +0100, Pavel Machek wrote:
> Hi!
>
> > Add a sysfs node code to report effective cooling of all cooling devices
> > attached to each trip points of a thermal zone. The cooling data reported
> > will be absolute if the higher temperature trip points are arranged first
> > otherwise the cooling stats is the cumulative effect of the earlier
> > invoked cooling handlers.
> >
> > The basic assumption is that cooling devices will bring down the temperature
> > in a symmetric manner and those statistics can be stored back and used for
> > further tuning of the system.
>
> /sys fs should be one-value-per-file, talk to gregkh.
That's correct.
Why not use debugfs for this instead?
thanks,
greg k-h
WARNING: multiple messages have this Message-ID (diff)
From: Greg KH <greg@kroah.com>
To: Amit Daniel Kachhap <amit.kachhap@linaro.org>
Cc: Pavel Machek <pavel@ucw.cz>,
linux-pm@lists.linux-foundation.org, linaro-dev@lists.linaro.org,
patches@linaro.org, linux-kernel@vger.kernel.org,
linux-acpi@vger.kernel.org, rob.lee@linaro.org
Subject: Re: [linux-pm] [RFC PATCH] thermal: Add support to report cooling statistics achieved by cooling devices
Date: Mon, 6 Feb 2012 09:03:49 -0800 [thread overview]
Message-ID: <20120206170348.GA19749@kroah.com> (raw)
In-Reply-To: <20120206165658.GA28687@atrey.karlin.mff.cuni.cz>
On Mon, Feb 06, 2012 at 05:56:58PM +0100, Pavel Machek wrote:
> Hi!
>
> > Add a sysfs node code to report effective cooling of all cooling devices
> > attached to each trip points of a thermal zone. The cooling data reported
> > will be absolute if the higher temperature trip points are arranged first
> > otherwise the cooling stats is the cumulative effect of the earlier
> > invoked cooling handlers.
> >
> > The basic assumption is that cooling devices will bring down the temperature
> > in a symmetric manner and those statistics can be stored back and used for
> > further tuning of the system.
>
> /sys fs should be one-value-per-file, talk to gregkh.
That's correct.
Why not use debugfs for this instead?
thanks,
greg k-h
next prev parent reply other threads:[~2012-02-06 17:03 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-18 9:21 [linux-pm][RFC PATCH] thermal: Add support to report cooling statistics achieved by cooling devices Amit Daniel Kachhap
2012-02-06 16:56 ` [RFC " Pavel Machek
2012-02-06 16:56 ` [linux-pm] " Pavel Machek
2012-02-06 17:03 ` Greg KH [this message]
2012-02-06 17:03 ` Greg KH
2012-02-06 23:16 ` Amit Kachhap
2012-02-07 0:18 ` Greg KH
2012-02-07 0:18 ` [linux-pm] " Greg KH
2012-02-07 18:26 ` Amit Kachhap
2012-02-07 18:26 ` [linux-pm] " Amit Kachhap
2012-02-07 7:09 ` Eduardo Valentin
2012-02-07 17:52 ` Amit Kachhap
2012-02-07 17:52 ` [linux-pm] " Amit Kachhap
2012-02-07 19:29 ` Eduardo Valentin
2012-02-07 19:29 ` Eduardo Valentin
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