Date: Thu, 29 Apr 2010 09:02:46 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/kern kern_ntptime.c Message-ID: <201004290902.o3T92sHm078618@repoman.freebsd.org>
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avg 2010-04-29 09:02:46 UTC
FreeBSD src repository
Modified files:
sys/kern kern_ntptime.c
Log:
SVN rev 207360 on 2010-04-29 09:02:46Z by avg
periodically save system time to hardware time-of-day clock
This is done in kern_ntptime, perhaps not the best place.
This is done using resettodr().
Some features:
- make save period configurable via tunable and sysctl
- period of zero disables saving, setting a non-zero period re-enables
it or reschedules it
- do saving only if system clock is ntp-synchronized
- save on shutdown
Discussed with: des, Peter Jeremy <peterjeremy@acm.org>
X-Maybe: save time near seconds boundary for better precision
MFC after: 2 weeks
Revision Changes Path
1.67 +65 -0 src/sys/kern/kern_ntptime.c
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