[LinuxPPS] multiple access to /dev/ppsN entries

Miroslav Lichvar mlichvar at redhat.com
Thu Mar 18 10:08:45 CET 2010


On Wed, Mar 17, 2010 at 08:55:15PM +0100, Bernhard Schiffner wrote:
> Again:
> 1.)  An "Unixer" simply expects something useable from reading a character 
> device.
> 2.) The RFC2783 does neither prohibit nor force a human readable readout of 
> /dev/pps.
> 3.) Mar 2009 were some related discussions about (IIRC) /dev/time(?) | Plan9 | 
> BSD etc. There was no conclusion about a standardized format of timestamps. I 
> don't know the state of the onion today.
> 4.) Mar 2009 were other priorities to work on first (inclusion into mainline, 
> hick hack about ldisk etc.)
> 5.) I think it's a good time to discuss this topic again.
> 6.) This thread is a base to do so.
> 7.) Last and very least George and me want this feature in one or an other 
> form implemented.  A patch exists.
> 
> What's your POW?

I'm not involved in the development, but having a file descriptor that
can be used in select() (so the application doesn't need to do any
polling) seems very useful to me.

-- 
Miroslav Lichvar



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