From owner-freebsd-smp Wed Mar 10 12: 0:36 1999 Delivered-To: freebsd-smp@freebsd.org Received: from smtp04.primenet.com (smtp04.primenet.com [206.165.6.134]) by hub.freebsd.org (Postfix) with ESMTP id DE87A15157 for ; Wed, 10 Mar 1999 12:00:33 -0800 (PST) (envelope-from tlambert@usr04.primenet.com) Received: (from daemon@localhost) by smtp04.primenet.com (8.8.8/8.8.8) id NAA28717; Wed, 10 Mar 1999 13:41:04 -0700 (MST) Received: from usr04.primenet.com(206.165.6.204) via SMTP by smtp04.primenet.com, id smtpd028659; Wed Mar 10 13:40:58 1999 Received: (from tlambert@localhost) by usr04.primenet.com (8.8.5/8.8.5) id MAA08386; Wed, 10 Mar 1999 12:59:28 -0700 (MST) From: Terry Lambert Message-Id: <199903101959.MAA08386@usr04.primenet.com> Subject: Re: lockmgr() panic To: Thierry.Besancon@lps.ens.fr Date: Wed, 10 Mar 1999 19:59:28 +0000 (GMT) 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 In-Reply-To: from "Thierry.Besancon@lps.ens.fr" at Mar 10, 99 03:45:24 pm X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > 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. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message