Date: Fri, 17 Sep 2004 14:42:39 -0400 (EDT) From: Robert Watson <rwatson@freebsd.org> To: "Raphael H. Becker" <rabe@p-i-n.com> Cc: freebsd-current@freebsd.org Subject: Re: de0 doze off Message-ID: <Pine.NEB.3.96L.1040917144129.61165F-100000@fledge.watson.org> In-Reply-To: <20040917203851.F55054@p-i-n.com>
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On Fri, 17 Sep 2004, Raphael H. Becker wrote: > > Another possible testing avenue (which might be slightly unstable but > > would illustrate the point) would be to leave debug.mpsafenet=1, > > ok > > > disable preemption, > > Sorry, how exactly do I do this? "options PREEMPTION" may appear in your kernel configuration file -- if it does, comment it out and re-config/re-compile. > > and remove the IFF_NEEDSGIANT flag from the if_de driver flags. > > edited as following > > --- if_de.c.orig Fri Sep 17 18:53:41 2004 > +++ if_de.c Fri Sep 17 18:54:00 2004 > @@ -4758,7 +4758,7 @@ > /* XXX: driver name/unit should be set some other way */ > ifp->if_dname = "de"; > ifp->if_dunit = sc->tulip_unit; > - ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST|IFF_NEEDSGIANT; > + ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST; Looks good. This may result in reduced stability, but it may also tell us specifically if there's a problem with the IFF_NEEDSGIANT mechanism. Robert N M Watson FreeBSD Core Team, TrustedBSD Projects robert@fledge.watson.org Principal Research Scientist, McAfee Research
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