Date: Wed, 10 Mar 1999 19:59:28 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: Thierry.Besancon@lps.ens.fr Cc: luoqi@watermarkgroup.com, Thierry.Besancon@tournesol.lps.ens.fr, dwhite@gdi.uoregon.edu, freebsd-smp@FreeBSD.ORG, Pierre.David@prism.uvsq.fr, alc@cs.rice.edu, dillon@apollo.backplane.com, jt@ratp.fr Subject: Re: lockmgr() panic Message-ID: <199903101959.MAA08386@usr04.primenet.com> In-Reply-To: <wnn3e3dqu7v.fsf@excalibur.lps.ens.fr> from "Thierry.Besancon@lps.ens.fr" at Mar 10, 99 03:45:24 pm
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> Life sucks today.
>
> Reading src/sys/kern/kern_lock.c, I saw this piece of code that might
> be relevant with this problem :
>
> #if !defined(MAX_PERF)
> if ((extflags & LK_CANRECURSE) == 0)
> panic("lockmgr: locking against myself");
> #endif
>
> Before defining the flag, does anybody know what MAX_PERF implies
> other than not panicing the kernel ? What does it means ?
"Maximum Performance" -- Don't do tests that will never fail because
we don't have any bugs.
The result of defining MAX_PERF in this case will be a cascade failure
later, at some point in the future, since there is, in fact, a bug.
Terry Lambert
terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.
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