From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 11 Jan 2001 16:31:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 11 Jan 2001 16:31:32 -0500 Received: from pizda.ninka.net ([216.101.162.242]:24708 "EHLO pizda.ninka.net") by vger.kernel.org with ESMTP id ; Thu, 11 Jan 2001 16:31:28 -0500 From: "David S. Miller" MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <14942.9759.730641.804611@pizda.ninka.net> Date: Thu, 11 Jan 2001 13:31:11 -0800 (PST) To: nigel@nrg.org Cc: andrewm@uow.edu.au, linux-kernel@vger.kernel.org, linux-audio-dev@ginette.musique.umontreal.ca Subject: Re: [linux-audio-dev] low-latency scheduling patch for 2.4.0 In-Reply-To: In-Reply-To: <200101110519.VAA02784@pizda.ninka.net> X-Mailer: VM 6.75 under 21.1 (patch 13) "Crater Lake" XEmacs Lucid Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Nigel Gamble writes: > That's why MontaVista's kernel preemption patch uses sleeping mutex > locks instead of spinlocks for the long held locks. Anyone who uses sleeping mutex locks is asking for trouble. Priority inversion is an issue I dearly hope we never have to deal with in the Linux kernel, and sleeping SMP mutex locks lead to exactly this kind of problem. Later, David S. Miller davem@redhat.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/