Date: Tue, 29 Nov 2005 21:48:51 GMT From: Peter Wemm <peter@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 87476 for review Message-ID: <200511292148.jATLmpTD049518@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=87476 Change 87476 by peter@peter_melody on 2005/11/29 21:48:37 Handle wraparound, in case we happen to be doing a DELAY as we cross an uptime of about 140 years on a 2GHz machine. One can never be too safe! :-) Affected files ... .. //depot/projects/hammer/sys/amd64/isa/clock.c#53 edit Differences ... ==== //depot/projects/hammer/sys/amd64/isa/clock.c#53 (text+ko) ==== @@ -280,7 +280,7 @@ end = start + (tsc_freq * n) / 1000000; do { now = rdtsc(); - } while (now < end); + } while (now < end || (now > start && end < start)); sched_unpin(); return; }
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