Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263240AbVCKJ7S (ORCPT ); Fri, 11 Mar 2005 04:59:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263256AbVCKJ7R (ORCPT ); Fri, 11 Mar 2005 04:59:17 -0500 Received: from mx2.elte.hu ([157.181.151.9]:31958 "EHLO mx2.elte.hu") by vger.kernel.org with ESMTP id S263244AbVCKJ6D (ORCPT ); Fri, 11 Mar 2005 04:58:03 -0500 Date: Fri, 11 Mar 2005 10:57:47 +0100 From: Ingo Molnar To: Steven Rostedt Cc: Lee Revell , linux-kernel@vger.kernel.org Subject: Re: [patch] Real-Time Preemption, -RT-2.6.11-rc3-V0.7.38-01 Message-ID: <20050311095747.GA21820@elte.hu> References: <20050204100347.GA13186@elte.hu> <1108789704.8411.9.camel@krustophenia.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.1i X-ELTE-SpamVersion: MailScanner 4.31.6-itk1 (ELTE 1.2) SpamAssassin 2.63 ClamAV 0.73 X-ELTE-VirusStatus: clean X-ELTE-SpamCheck: no X-ELTE-SpamCheck-Details: score=-4.9, required 5.9, autolearn=not spam, BAYES_00 -4.90 X-ELTE-SpamLevel: X-ELTE-SpamScore: -4 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 761 Lines: 19 * Steven Rostedt wrote: > > The short term fix is probably to put back the preempt_disables, the long > > term is to get rid of these stupid bit_spin_lock busy loops. > > Doing a quick search on the kernel, it looks like only kjournald uses > the bit_spin_locks. I'll start converting them to spinlocks. The use > seems to be more of a hack, since it is using bits in the state field > for locking, and these bits aren't used for anything else. yeah. bit-spinlocks are really a hack. Ingo - 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/