[ntp:questions] kernel pps

unruh unruh at invalid.ca
Wed Feb 8 17:45:07 UTC 2012

On 2012-01-17, Hal Murray <hal-usenet at ip-64-139-1-69.sjc.megapath.net> wrote:
> In article <jf4tou$7rf$1 at dont-email.me>,
>  unruh <unruh at invalid.ca> writes:
>>How do I enable kernel pps? I have kernel 2.6.33-7mdb (Mandriva 2010.1)
>>which has a pps_core module. But even if I install that module I get no 
>>/dev/pps0 device not a /sys/class/pps/pps0
>>Somehow I have to tell it to use look at say the DCD line on the first
>>serial port. How do I do that?
> You need to do something like:
>   ldattach 18 /dev/ttyS0

Tried that and got
"ldattach: cannot set line discipline: Invalid argument"
I notice that there is a comment on one of the web pages that said that 
the pps was included in 2.6.34 and later kernels. So I am not sure if
this "pps_core" module does what it is supposed to. I also do not have
timepps.h file anywhere.

> google should find the details.  We should add them to the wiki.

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