From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764664AbXGKALR (ORCPT ); Tue, 10 Jul 2007 20:11:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754100AbXGKALC (ORCPT ); Tue, 10 Jul 2007 20:11:02 -0400 Received: from gate.crashing.org ([63.228.1.57]:46196 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752985AbXGKALA (ORCPT ); Tue, 10 Jul 2007 20:11:00 -0400 In-Reply-To: <18068.5829.53635.797336@cargo.ozlabs.ibm.com> References: <135307ED-7125-4859-8594-4B5B900D92D6@kernel.crashing.org> <464C9E67.2020909@ru.mvista.com> <6E0D5E13-C939-4FCE-81A3-F29DFA6436A2@kernel.crashing.org> <464CA222.8000407@ru.mvista.com> <464D9E7E.3090605@genesi-usa.com> <464DADFC.3080802@ru.mvista.com> <464DB800.40702@genesi-usa.com> <1179499713.12981.75.camel@chaos> <32E780BE-58B7-4303-AA49-1852C4C7EB50@kernel.crashing.org> <464DD9DD.8030603@genesi-usa.com> <20070710105212.GA14682@iram.es> <78777AB0-8FA2-4FB0-9D02-6504ED28957D@kernel.crashing.org> <18068.5829.53635.797336@cargo.ozlabs.ibm.com> Mime-Version: 1.0 (Apple Message framework v752.2) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: Cc: Gabriel Paubert , Thomas Gleixner , mingo@elte.hu, linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org Content-Transfer-Encoding: 7bit From: Segher Boessenkool Subject: Re: [PATCH 2.6.21-rt2] PowerPC: decrementer clockevent driver Date: Wed, 11 Jul 2007 02:10:10 +0200 To: Paul Mackerras X-Mailer: Apple Mail (2.752.2) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >>> This scales with the number of processors since there is one >>> decrementer per core (is it per thread on SMT chips? >>> I don't know). >> >> One per core. > > No, each thread has its own decrementer, but the timebase is shared. Argh, of course you're right, I'm reading the wrong ISA version again. Sorry. Segher