[LinuxPPS] cross posting [time-nuts] NTP API on Linux 2.6.26

[James Boddington]

Hal V. Engel wrote:
> Have you patched glibc with the nanosecond patch set located here 
> http://sourceware.org/ml/libc-alpha/2008-03/msg00076.html ?  Without this or 
> the ntp patch that Michael Meier posted to the list yesterday 
> http://www.mulder.franken.de/blogfiles/timex.h ntp will only be capable to 
> doing microsecond timing.

I don't get this bit. Linuxpps gets ns time stamps. I use the atom driver which 
uses ns. Ntp gives ns offsets to the kernel.

I have my kernel setup to report both the offset from pps and the offset that 
ntp gives it. The ntp offset looks like a filtered version of the pps offset 
and both are ns.

Unless this is a later change I am missing. I am using glibc 2.6.1 with the 
changes to timex.h I have posted here in the past and my modified 2.6.24 where 
I back ported the nano stuff from an Andrew Morten kernel that was somewhere 
between 2.6.25 and 2.6.26 at the time.

-- 
    James