Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966063Ab2JZSlp (ORCPT ); Fri, 26 Oct 2012 14:41:45 -0400 Received: from mail-da0-f46.google.com ([209.85.210.46]:60368 "EHLO mail-da0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966020Ab2JZSlm (ORCPT ); Fri, 26 Oct 2012 14:41:42 -0400 Message-ID: <508AD963.9090103@gmail.com> Date: Fri, 26 Oct 2012 11:41:39 -0700 From: Juri Lelli User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121011 Thunderbird/16.0.1 MIME-Version: 1.0 To: Steven Rostedt CC: Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Linus Torvalds , mingo@redhat.com, oleg@redhat.com, fweisbec@gmail.com, darren@dvhart.com, johan.eker@ericsson.com, p.faure@akatech.ch, linux-kernel@vger.kernel.org, claudio@evidence.eu.com, michael@amarulasolutions.com, fchecconi@gmail.com, tommaso.cucinotta@sssup.it, nicola.manica@disi.unitn.it, luca.abeni@unitn.it, dhaval.giani@gmail.com, hgu1972@gmail.com, paulmck@linux.vnet.ibm.com, raistlin@linux.it, insop.song@ericsson.com, liming.wang@windriver.com, jkacur@redhat.com, harald.gustafsson@ericsson.com, vincent.guittot@linaro.org, Andrew Morton Subject: Re: [PATCH 01/16] math128: Introduce various 128bit primitives References: <1351115634-8420-1-git-send-email-juri.lelli@gmail.com> <1351115634-8420-2-git-send-email-juri.lelli@gmail.com> <1351172849.12171.10.camel@twins> <1351241389.12171.45.camel@twins> <20121026092421.GB628@gmail.com> <1351244130.16863.7.camel@twins> <20121026094207.GA2179@gmail.com> <1351245264.16863.12.camel@twins> <1351248244.16863.13.camel@twins> <1351256204.16863.56.camel@twins> <508AD291.1010803@gmail.com> <1351276134.8467.62.camel@gandalf.local.home> In-Reply-To: <1351276134.8467.62.camel@gandalf.local.home> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 889 Lines: 24 On 10/26/2012 11:28 AM, Steven Rostedt wrote: > On Fri, 2012-10-26 at 11:12 -0700, Juri Lelli wrote: > >> - scale down (right by 10) incoming parameters as to do internal >> math with ~1us resolution (and scale up outgoing params) > > Would scaling down by 9 be sufficient? That way the resolution is still > just less than 1us. > I don't see any practical issue. Anyway, if, - as Thomas said - "It's really pointless to even think about anything below microseconds resolution", having an internal resolution just above a microsecond sounds to me easier to justify to users. But I'm pretty open about this :). Thanks and Regards, - Juri -- 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/