Re: [PATCHv4 1/1] Hwmon: Add core/pkg Threshold Support to Coretemp

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On Sun, 2011-09-18 at 13:24 -0400, Jean Delvare wrote:
> On Sat, 17 Sep 2011 11:09:43 -0700, Guenter Roeck wrote:
> > Hi Durga,
> > 
> > On Sat, Sep 17, 2011 at 01:40:41PM -0400, R, Durgadoss wrote:
> > > Hi Guenter,
> > > 
> > [ ... ]
> > 
> > > > > For me, it looks like, we need not know whether the threshold is upper or
> > > > lower.
> > > > > Anyway, for every threshold, we will get two interrupts (for either
> > > > direction)
> > > > > So, the user space can assume either a lower threshold and look for 0 in the
> > > > > Corresponding alarm interface Or a higher threshold and look for 1 in the
> > > > > alarm interface. Will this not work ?
> > > > >
> > > > For a lower threshold, "alarm" implies "temperature is at or below threshold",
> > > > In other words, "alarm" can mean that a value is above or below a given
> > > > threshold -
> > > > it has a semantics that depends on its context.
> > > > 
> > > > This context is not known in the case of a generic threshold. This is why I
> > > > suggested
> > > > to use a more neutral term, such as "triggered", which would imply "at or above
> > > > threshold" (or possibly just "threshold triggered" if the direction is not
> > > > known)
> > > > without attaching a semantics to it.
> > > > 
> > > 
> > > Ok. I agree. We can use tempX_thresholdY_triggered.
> > > 
> > I'd like to hear Jean's opinion first.
> 
> I'm fine with your proposal, yes.
> 
> > Also, if we introduce new attributes, we should probably reinstate the old "max".
> 
> Definitely. And preferably the 2.6.39 variant rather than the 3.0
> variant, i.e. no magical -20°C offset, unless someone can explain where
> it comes from.
> 
Sounds good.

Durga, do you have time to make those changes ?

Thanks,
GUenter



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