From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752963Ab0CEOSb (ORCPT ); Fri, 5 Mar 2010 09:18:31 -0500 Received: from hera.kernel.org ([140.211.167.34]:49523 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752456Ab0CEOS3 (ORCPT ); Fri, 5 Mar 2010 09:18:29 -0500 Message-ID: <4B91128A.5000305@kernel.org> Date: Fri, 05 Mar 2010 23:17:46 +0900 From: Tejun Heo User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091130 SUSE/3.0.0-1.1.1 Thunderbird/3.0 MIME-Version: 1.0 To: Dimitri Sivanich CC: linux-kernel@vger.kernel.org, Rusty Russell , Linus Torvalds , Heiko Carstens Subject: Re: [PATCH] improve stop_machine performance References: <20100304212034.GA3171@sgi.com> <4B904EA8.3050709@kernel.org> <20100305141143.GA17417@sgi.com> In-Reply-To: <20100305141143.GA17417@sgi.com> X-Enigmail-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Fri, 05 Mar 2010 14:17:49 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, On 03/05/2010 11:11 PM, Dimitri Sivanich wrote: > It seems reasonable as long as setup is fast enough. Will that > thread indeed become fully uninterruptible (not affected by anything > including scheduler decisions like > sched_rt_period_us/sched_rt_runtime_us, etc..)? I think so. They basically are used to do the same thing - occupying the CPU. I'll give a shot. Please give me a couple of days. Thanks. -- tejun