Commit Graph

6 Commits

Author SHA1 Message Date
jonathan 6c0abe64fc defopt NTP and PPS_SYNC, in preparation for adding PPS support. 1998-04-22 07:08:11 +00:00
cgd e9a07759c9 ntp_gettime()'s argument is a struct ntptimeval *, not a struct timex * 1996-12-22 06:23:38 +00:00
thorpej ff392f324b Back out this piece of revision 1.3:
>- Optional systems calls are "UNIMPL" if the support is not being
>  compiled into the kernel.

It had implications that didn't occurr to me at the time.  *sigh*
1996-12-06 20:10:51 +00:00
thorpej 9d9479eb2f Make ntp_gettime() and ntp_adjtime() like other system calls:
- The functions that implement them and the argument names are
  prepended with "sys_".
- Optional systems calls are "UNIMPL" if the support is not being
  compiled into the kernel.
1996-11-14 04:51:09 +00:00
christos 4a43afe50f - Make things compile cleanly after the NTP additions.
- Remove unused variables in exec_ecoff.c
1996-03-07 14:31:16 +00:00
jonathan e7ef034c05 Add NTP kernel precision timekeeping from Dave Mill's xntp distribution
and the "kernel.tar.Z" distribution on louie.udel.edu, which is older than
xntp 3.4y or 3.5a, but contains newer kernel source fragments.

This commit adds support for a new kernel configuration option, NTP.
If NTP is selected, then the system clock should be run at "HZ", which
must be defined at compile time to be one value from:
  60, 64, 100, 128, 256, 512, 1024.

Powers of 2 are ideal; 60 and 100 are supported but are marginally less
accurate.

If NTP is not configured, there should be no change in behavior relative
to pre-NTP kernels.

These changes have been tested extensively with xntpd 3.4y on a decstation;
almost identical kernel mods work on an i386.  No pulse-per-second (PPS)
line discipline support is included, due to unavailability of hardware
to test it.

With this in-kernel PLL support for NetBSD, both xntp 3.4y and xntp
3.5a user-level code need minor changes. xntp's prototype for
syscall() is  correct for FreeBSD, but not for NetBSD.
1996-02-27 04:20:30 +00:00