From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758663AbYBGSOx (ORCPT ); Thu, 7 Feb 2008 13:14:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756079AbYBGSOi (ORCPT ); Thu, 7 Feb 2008 13:14:38 -0500 Received: from ithilien.qualcomm.com ([129.46.51.59]:46064 "EHLO ithilien.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755975AbYBGSOi (ORCPT ); Thu, 7 Feb 2008 13:14:38 -0500 Message-ID: <47AB4A78.70609@qualcomm.com> Date: Thu, 07 Feb 2008 10:14:16 -0800 From: Max Krasnyansky User-Agent: Thunderbird 2.0.0.9 (X11/20071115) MIME-Version: 1.0 To: Andrew Morton CC: Paul Jackson , torvalds@linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: [git pull] CPU isolation extensions References: <47AA9807.7090402@qualcomm.com> <20080206215805.17a0c919.akpm@linux-foundation.org> <20080207015954.92cd3878.pj@sgi.com> <20080207001235.a9baac90.akpm@linux-foundation.org> In-Reply-To: <20080207001235.a9baac90.akpm@linux-foundation.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Andrew Morton wrote: > On Thu, 7 Feb 2008 01:59:54 -0600 Paul Jackson wrote: > >> but hard real time is not my expertise > > Speaking of which.. there is the -rt tree. Have those people had a look > at the feature, perhaps played with the code? Peter Z. and Steven R. sent me some comments, I believe I explained and addressed them. Ingo's been quite. Probably too busy. btw It's not an RT feature per se. It certainly helps RT but removing all the latency sources from isolated CPUs. But in general it's just "reducing kernel overhead on some CPUs" kind of feature. Max