[LinuxPPS] PLL sensitivity

[Remco den Besten]

Sorry to have started this thread ;-)

Being not a hard core programmer myself, I looked into the PPSkit-2.1.7 
'sources/patch'
from Ulrich.

Wouldn't it be an idea to port parts of his PLL code to Linux 2.6 ?

> I had a quick look at this function in the FreeBSD source code yesterday. 
> But
> it looked overly simple to me and all it really does is pass the call to 
> the
> ioctl function with the right parms.  I didn't dig much father but it 
> appears
> that in order to make this work the kernel will need to have some of the 
> same
> functionality that is currently in ntpd and I don't know if this 
> functionality
> exists in the kernel.  If it does then implementing time_pps_kcbind() 
> should
> be almost trivial although I suspect that this part of the kernel will be
> untested if it exists. But if it does not then the real issue is 
> implementing
> the kernel time keeping consumer which is likely to be non-trivial. 
> Perhaps
> someone who is more familiar with this can comment.