Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761886AbXEOHeo (ORCPT ); Tue, 15 May 2007 03:34:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756155AbXEOHeh (ORCPT ); Tue, 15 May 2007 03:34:37 -0400 Received: from gate.crashing.org ([63.228.1.57]:40443 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755259AbXEOHeh (ORCPT ); Tue, 15 May 2007 03:34:37 -0400 Subject: Re: [patch 4/4] powerpc 2.6.21-rt1: reduce scheduling latency by changing tlb flush size From: Benjamin Herrenschmidt To: Tsutomu OWA Cc: Arnd Bergmann , linuxppc-dev@ozlabs.org, Thomas Gleixner , mingo@elte.hu, linux-kernel@vger.kernel.org In-Reply-To: References: <1179125506.22481.297.camel@localhost.localdomain> <200705141640.02561.arnd@arndb.de> Content-Type: text/plain Date: Tue, 15 May 2007 17:34:12 +1000 Message-Id: <1179214452.32247.170.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.10.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 878 Lines: 26 On Tue, 2007-05-15 at 13:12 +0900, Tsutomu OWA wrote: > > With this code, you get silent side-effects of enabling PPC_CELLEB > > along with another platform. > > Yeah, thank you for pointing it out. > I'll send revised patch later. > > > Maybe instead you should change the hpte_need_flush() to always flush > > when running on the celleb platform and PREEMPT_RT is enabled. > > Hmm... Is it in linux-2.6.21? grep'ing it did not help... > > Is http://patchwork.ozlabs.org/linuxppc/patch?id=10361 is the first place > where the hpte_need_flush() appears? Yes, I added that when reworking the batching mecanism. Ben. - 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/