[LinuxPPS] PPS next steps...

Rodolfo Giometti giometti at enneenne.com
Sun Mar 1 18:32:24 CET 2009


On Fri, Feb 20, 2009 at 08:06:26AM +0100, Bernhard Schiffner wrote:
> On Thursday 19 February 2009 18:54:10 Rodolfo Giometti wrote:
> > On Thu, Feb 19, 2009 at 12:47:50PM -0500, George Spelvin wrote:
> > > Rodolfo Giometti <giometti at enneenne.com> wrote:
> > > > Can you please ask to Andrew Morton and Alan Cox what they think about
> > > > this issue? I agree with them. ;)
> > >
> > > Er... why should they care about the format of data from /dev/pps0?
> > > I asked Alan about serial driver stuff because he had expressed an
> > > interest.  I don't think he cares about this detail.
> >
> > Please, don't consider me paranoic :D but each time I tried to add a
> > new features I got objections to inclusion!
> >
> > LinuxPPS interface seems quite accepted by everyone and changing it
> > again just right now may get some NACKs... that's why I asked to you
> > to ask to them before doing it.
> >
> > OTOH, if you are sure that what you are doing is so correct that
> > nobody may object anything, it's ok for me too.
> >
> > Ciao,
> >
> > Rodolfo
> 
> Rodolfo,
> 
> I think you speak about features like ldisc, where you got opinions back and 
> forth because these were hot topics for others.
> 
> 1.) Real readout of a /dev/xyz is standard unix behavior.
> Do you know about other devices, returning -EN... on read() ?
> 
> 2.) It's not prohibited by RFC, something or someone else.
> 
> 3.) Your Software is not limited to PPS.
> For PPS you have ntp to coop with (and you do fine).
> For others it is far easier to have a readable /dev/pps*.
> 
> 4.) Last, (not least :-) ) George and me like it to have.
> 
> 5.) Perhaps it is good to ask John Stultz for advise.
> There may be something (interface, format ...?) clock-related, which is better 
> know before.
> Should I ask him?

Yes, please.

Ciao,

Rodolfo

-- 

GNU/Linux Solutions                  e-mail: giometti at enneenne.com
Linux Device Driver                          giometti at linux.it
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UNIX programming                     skype:  rodolfo.giometti



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