Date: 20 May 1999 19:17:42 -0500 From: Joel Ray Holveck <joelh@gnu.org> To: Doug Rabson <dfr@nlsystems.com> Cc: Peter Wemm <peter@netplex.com.au>, Tommy Hallgren <thallgren@yahoo.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: Lazy SPLs Message-ID: <86wvy3wa1l.fsf@detlev.UUCP> In-Reply-To: Doug Rabson's message of "Thu, 20 May 1999 20:25:45 %2B0100 (BST)" References: <Pine.BSF.4.05.9905202024370.509-100000@herring.nlsystems.com>
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>>> "Lazy SPLs - The kernel no longer masks hardware events unless a >>> hardware event actually occurs, avoiding many expensive >>> operations." >> We've been doing it for as long as I can remember, at least as far >> back as 2.0.5, probably as far back as 1.x. > My earliest memory of it was as "Bruce's new interrupt code" for 386bsd. > It was part of the 386bsd patchkit I think. Why mask out the interrupts at all, instead of queuing them in handler level? joelh -- Joel Ray Holveck - joelh@gnu.org Fourth law of programming: Anything that can go wrong wi sendmail: segmentation violation - core dumped To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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