Date: Thu, 25 May 2000 02:44:20 -0600 From: Chuck Paterson <cp@bsdi.com> To: "Jordan K. Hubbard" <jkh@zippy.cdrom.com> Cc: Matthew Dillon <dillon@apollo.backplane.com>, Terry Lambert <tlambert@primenet.com>, arch@freebsd.org Subject: Re: Preemptive kernel on older X86 hardware Message-ID: <200005250844.CAA19436@berserker.bsdi.com>
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The good news is that the actual implementation of the mutexs is machine dependent and can change wildly over different architectures with no need for the callers to know. Chuck "Jordan K. Hubbard" wrote on: Thu, 25 May 2000 01:31:23 PDT }> On intel anyway, subroutine calls are *cheap*, especially compared }> to the overhead of a locked instruction or even an L1 cache miss. } }I don't believe this is true on all the architectures FreeBSD is }anticipated to run on in the "near future", however. } }- Jordan To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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