Date: Sun, 17 Oct 2010 16:46:54 +0000 (UTC) From: Marius Strobl <marius@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/sparc64/sparc64 tick.c Message-ID: <201010171647.o9HGlBuR002463@repoman.freebsd.org>
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marius 2010-10-17 16:46:54 UTC
FreeBSD src repository
Modified files:
sys/sparc64/sparc64 tick.c
Log:
SVN rev 213985 on 2010-10-17 16:46:54Z by marius
- In oneshot-mode it doesn't make sense to try to compensate the clock
drift in order to achieve a more stable clock as the tick intervals may
vary in the first place. In fact I haven't seen this code kick in when
in oneshot-mode so just skip it in that case.
- There's no need to explicitly stop the (S)TICK counter in oneshot-mode
with every tick as it just won't trigger again with the (S)TICK compare
register set to a value in the past (with a wrap-around once every ~195
years of uptime at 1.5 GHz this isn't something we have to worry about
in practice).
- Given that we'll disable interrupts completely anyway there's no
need to enter critical sections.
Revision Changes Path
1.30 +41 -45 src/sys/sparc64/sparc64/tick.c
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