From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265029AbUHHCtG (ORCPT ); Sat, 7 Aug 2004 22:49:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265041AbUHHCtF (ORCPT ); Sat, 7 Aug 2004 22:49:05 -0400 Received: from holomorphy.com ([207.189.100.168]:36055 "EHLO holomorphy.com") by vger.kernel.org with ESMTP id S265029AbUHHCtC (ORCPT ); Sat, 7 Aug 2004 22:49:02 -0400 Date: Sat, 7 Aug 2004 19:48:52 -0700 From: William Lee Irwin III To: Lee Revell Cc: Ingo Molnar , linux-kernel Subject: Re: [patch] preempt-timing-on-2.6.8-rc2-O2 Message-ID: <20040808024852.GS17188@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Lee Revell , Ingo Molnar , linux-kernel References: <20040802092855.GA15894@elte.hu> <20040802100815.GA18349@elte.hu> <20040802101840.GB2334@holomorphy.com> <20040802103516.GA20584@elte.hu> <20040802105100.GA22855@elte.hu> <1091932214.1150.3.camel@mindpipe> <20040808023306.GP17188@holomorphy.com> <1091932615.1150.6.camel@mindpipe> <20040808023941.GQ17188@holomorphy.com> <1091933229.1150.15.camel@mindpipe> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1091933229.1150.15.camel@mindpipe> User-Agent: Mutt/1.5.6+20040722i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 2004-08-07 at 22:39, William Lee Irwin III wrote: >> You were idling at the time, so the latency affected nothing, except >> perhaps task migration on SMP. On Sat, Aug 07, 2004 at 10:47:09PM -0400, Lee Revell wrote: > Would it be possible to detect this situation and treat it like a > preemptible section, just so the sheer volume of printks does not cause > a problem? It's probably actually a false positive. What I was explaining was why, if it were in fact a non-preemptible critical section, it wouldn't cause xruns. -- wli