Date: Fri, 17 Sep 2010 04:48:50 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/x86/isa clock.c Message-ID: <201009170449.o8H4nDHY036954@repoman.freebsd.org>
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mav 2010-09-17 04:48:50 UTC
FreeBSD src repository
Modified files:
sys/x86/isa clock.c
Log:
SVN rev 212778 on 2010-09-17 04:48:50Z by mav
Add one-shot mode support to attimer (i8254) event timer.
Unluckily, using one-shot mode is impossible, when same hardware used for
time counting. Introduce new tunable hint.attimer.0.timecounter, setting
which to 0 disables i8254 time counter and allows one-shot mode. Note,
that on some systems there may be no other reliable enough time counters,
so this tunable should be used with understanding.
Revision Changes Path
1.16 +71 -44 src/sys/x86/isa/clock.c
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