Date: Tue, 28 Mar 2000 21:27:03 -0800 From: Chris Piazza <cpiazza@jaxon.net> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: Gary Jennejohn <garyj@muc.de>, freebsd-current@FreeBSD.ORG Subject: Re: Very weird assembly failure (was Re: UP kernel performance and Matt Dillon's patches) Message-ID: <20000328212703.A365@norn.ca.eu.org> In-Reply-To: <200003290348.TAA56657@apollo.backplane.com>; from dillon@apollo.backplane.com on Tue, Mar 28, 2000 at 07:48:00PM -0800 References: <200003282137.XAA05281@peedub.muc.de> <200003290308.TAA56364@apollo.backplane.com> <200003290348.TAA56657@apollo.backplane.com>
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On Tue, Mar 28, 2000 at 07:48:00PM -0800, Matthew Dillon wrote:
> I found a couple of minor nits, but only one real bug. In i386/swtch.s
> I forgot to change out a WANT_RESCHED for AST_RESCHED:
>
> The problem is that a kernel build is not reporting any errors!
> WANT_RESCHED does not exist at all, anywhere. If I change it to
> a garbage name the kernel still builds. I don't get it.
>
> In anycase, please try changing WANT_RESCHED to AST_RESCHED in
> i386/i386/swtch.s and see if that fixes the reported performance
> problems. If WANT_RESCHED defaults to 0 by being undefined, then
> the reschedule flag is never cleared when a context switch is made
> and this could certainly lead to problems.
Changing it to AST_RESCHED did not fix the problem for me.
-Chris
--
cpiazza@jaxon.net cpiazza@FreeBSD.org
Abbotsford, BC, Canada
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