Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261197AbTHYLPX (ORCPT ); Mon, 25 Aug 2003 07:15:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261357AbTHYLPX (ORCPT ); Mon, 25 Aug 2003 07:15:23 -0400 Received: from main.gmane.org ([80.91.224.249]:54928 "EHLO main.gmane.org") by vger.kernel.org with ESMTP id S261197AbTHYLPT (ORCPT ); Mon, 25 Aug 2003 07:15:19 -0400 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: mru@users.sourceforge.net (=?iso-8859-1?q?M=E5ns_Rullg=E5rd?=) Subject: Re: [PATCH]O18.1int Date: Mon, 25 Aug 2003 13:15:17 +0200 Message-ID: References: <200308231555.24530.kernel@kolivas.org> <200308252016.13315.kernel@kolivas.org> <200308252050.04147.kernel@kolivas.org> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Complaints-To: usenet@sea.gmane.org User-Agent: Gnus/5.1002 (Gnus v5.10.2) XEmacs/21.4 (Rational FORTRAN, linux) Cancel-Lock: sha1:qt9hUxegSvVse+gKsoRq/WxY90Q= Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 774 Lines: 15 Con Kolivas writes: >> Vanilla test1 has the spin effect. Test2 doesn't. I haven't tried >> vanilla test3 or test4. As I've said, the O16.2-O16.3 patch >> introduced the problem. With that patch reversed, everything is >> fine. What problem does that patch fix? > > It's a generic fix for priority inversion but it induces badness in smp, and > latency in task preemption on up so it's not suitable. Now I'm confused. If that patch is bad, then why is it in O18? -- M?ns Rullg?rd mru@users.sf.net - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/