From owner-p4-projects Tue Dec 10 11:57:38 2002 Delivered-To: p4-projects@freebsd.org Received: by hub.freebsd.org (Postfix, from userid 32767) id 0EF1537B401; Tue, 10 Dec 2002 11:57:37 -0800 (PST) Delivered-To: perforce@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 207BB37B40D for ; Tue, 10 Dec 2002 11:57:35 -0800 (PST) Received: from mail.speakeasy.net (mail16.speakeasy.net [216.254.0.216]) by mx1.FreeBSD.org (Postfix) with ESMTP id 63EDB43EDA for ; Tue, 10 Dec 2002 11:57:30 -0800 (PST) (envelope-from jhb@FreeBSD.org) Received: (qmail 11009 invoked from network); 10 Dec 2002 19:57:35 -0000 Received: from unknown (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) by mail16.speakeasy.net (qmail-ldap-1.03) with DES-CBC3-SHA encrypted SMTP for ; 10 Dec 2002 19:57:35 -0000 Received: from laptop.baldwin.cx (gw1.twc.weather.com [216.133.140.1]) by server.baldwin.cx (8.12.6/8.12.6) with ESMTP id gBAJvRuH063691; Tue, 10 Dec 2002 14:57:27 -0500 (EST) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.5.2 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: Date: Tue, 10 Dec 2002 14:57:29 -0500 (EST) From: John Baldwin To: Nate Lawson Subject: Re: PERFORCE change 22140 for review Cc: Perforce Change Reviews Sender: owner-p4-projects@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 10-Dec-2002 Nate Lawson wrote: > On Tue, 10 Dec 2002, John Baldwin wrote: >> http://perforce.freebsd.org/chv.cgi?CH=22140 >> Change 22140 by jhb@jhb_laptop on 2002/12/10 10:37:10 >> >> Add some hokie code to witness so that if we panic from spinning >> too long on a spin lock, we try to use witness info to determine >> where the other CPU acquired the lock in question. > > Would it make sense to leave this code out if WITNESS_SKIPSPIN is enabled? No, because you can enable spin locks via a loader tunable. -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe p4-projects" in the body of the message