From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750896AbWGKJw7 (ORCPT ); Tue, 11 Jul 2006 05:52:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750893AbWGKJw7 (ORCPT ); Tue, 11 Jul 2006 05:52:59 -0400 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:2442 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S1750888AbWGKJw6 (ORCPT ); Tue, 11 Jul 2006 05:52:58 -0400 Subject: Re: [PATCH] ia64: change usermode HZ to 250 From: Alan Cox To: David Mosberger-Tang Cc: Jeremy Higdon , Arjan van de Ven , Jes Sorensen , "Luck, Tony" , John Daiker , John Hawkes , Tony Luck , Andrew Morton , linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, Jack Steiner , Dan Higgins In-Reply-To: References: <617E1C2C70743745A92448908E030B2A27FC5F@scsmsx411.amr.corp.intel.com> <1151578928.23785.0.camel@localhost.localdomain> <44A3AFFB.2000203@sgi.com> <1151578513.3122.22.camel@laptopd505.fenrus.org> <20060708001427.GA723842@sgi.com> <1152340963.3120.0.camel@laptopd505.fenrus.org> <20060710202228.GA732959@sgi.com> Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Tue, 11 Jul 2006 11:10:14 +0100 Message-Id: <1152612614.18028.1.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.2 (2.6.2-1.fc5.5) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ar Llu, 2006-07-10 am 21:01 -0600, ysgrifennodd David Mosberger-Tang: > Note that Alan didn't claim that *all* (Linux-supported) architectures > expose a constant user HZ, only the "mainstream" ones. I won't get Indeed. IA64 likes to be different > into the debate as to what qualifies as "mainstream", but clearly IA64 > does not (and should not) expose a constant value, since there were no > legacy-binary-issue and we chose to insist that apps should uses > sysconf() or equivalent if they need to know the clocktick. In the case where you are running x86 binaries where you do need to translate of course. Alan