Date: Mon, 12 Dec 2005 19:45:34 -0500 From: John Baldwin <jhb@FreeBSD.org> To: Peter Wemm <peter@FreeBSD.org> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/amd64/isa clock.c Message-ID: <4587530C-E56F-4996-ADFE-D567B7D4547B@FreeBSD.org> In-Reply-To: <200512122227.jBCMR8SJ087111@repoman.freebsd.org> References: <200512122227.jBCMR8SJ087111@repoman.freebsd.org>
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On Dec 12, 2005, at 5:27 PM, Peter Wemm wrote: > peter 2005-12-12 22:27:08 UTC > > FreeBSD src repository > > Modified files: > sys/amd64/isa clock.c > Log: > For the amd64 platform, we can depend on the TSC being present. > This patch > changes DELAY to use the TSC once it has been calibrated. This > does NOT > use the TSC for long-term timekeeping. It only uses it to bound > the > DELAY() spinloop. This should not be affected by the Athlon64 X2 > TSC > quirks because the cpu is not halted while we use DELAY(). Are you going to merge this over to i386 as well? -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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