From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751472AbWEIO6E (ORCPT ); Tue, 9 May 2006 10:58:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751400AbWEIO6E (ORCPT ); Tue, 9 May 2006 10:58:04 -0400 Received: from 216-54-166-5.gen.twtelecom.net ([216.54.166.5]:60063 "EHLO mx1.compro.net") by vger.kernel.org with ESMTP id S1751472AbWEIO6C (ORCPT ); Tue, 9 May 2006 10:58:02 -0400 Message-ID: <4460ADF8.4040301@compro.net> Date: Tue, 09 May 2006 10:58:00 -0400 From: Mark Hounschell Reply-To: markh@compro.net Organization: Compro Computer Svcs. User-Agent: Thunderbird 1.5 (X11/20060111) MIME-Version: 1.0 To: linux-kernel Subject: Re: rt20 patch question References: <446089CF.3050809@compro.net> <1147185483.21536.13.camel@c-67-180-134-207.hsd1.ca.comcast.net> In-Reply-To: <1147185483.21536.13.camel@c-67-180-134-207.hsd1.ca.comcast.net> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Daniel Walker wrote: > On Tue, 2006-05-09 at 08:23 -0400, Mark Hounschell wrote: >> Can I assume configuring 'Complete preemption' is the same as >> configuring ('Voluntary preemption' + 'Hardirq' + 'Softirq' + default >> proc settings)? > > Not Voluntary preemption, and I'm not sure what default proc settings is > referring too . The proc settings or boot options to enable or disable hardirq or softirq threading that you have avaialable in Voluntary preemption. > Complete preemption is like CONFIG_PREEMPT and softirq > and hardirq threading .. The preemption isn't voluntary, it's forced . > Complete preemption you have no choice of threading hard or soft irqs. They are threaded. So If I config Voluntary preemption + Hardirq and Softirq threading and do not disable hardirq or softirq via proc or boot cmdline, is that the same as configuring Complete preemption? Mark