Date: Fri, 31 Aug 2001 11:22:30 -0700 (PDT) From: John Baldwin <jhb@FreeBSD.org> To: Tor.Egge@fast.no Cc: freebsd-smp@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG, Patrick.Guelat@imp.ch, phk@FreeBSD.ORG, drussell@saturn-tech.com, roberto@eurocontrol.fr, atrn@zeta.org.au, sthaug@nethelp.no, kpielorz@tdx.co.uk, bkarp@icsi.berkeley.edu, bde@zeta.org.au, mb@imp.ch Subject: Re: Clock speedup on 4.X FreeBSD SMP and serverworks chipset Message-ID: <XFMail.010831112230.jhb@FreeBSD.org> In-Reply-To: <200108310148.DAA80823@midten.fast.no>
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On 31-Aug-01 Tor.Egge@fast.no wrote: > > I wrote: > >> The problem here is that CPU#1 fails to hold clock_lock while setting >> clkintr_pending, causing i8254_offset to be stepped twice, first due >> to clkintr_pending, then due to i8254_lastcount being larger than count. > > The corresponding patch for -current is Hmm, does -current even need clkintr_pending anymore? What is its purpose? -- John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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