From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755144AbYIFU7s (ORCPT ); Sat, 6 Sep 2008 16:59:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752965AbYIFU7j (ORCPT ); Sat, 6 Sep 2008 16:59:39 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:43191 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752872AbYIFU7j (ORCPT ); Sat, 6 Sep 2008 16:59:39 -0400 Date: Sat, 6 Sep 2008 13:59:20 -0700 (PDT) From: Linus Torvalds To: Thomas Gleixner cc: Alok Kataria , Alan Cox , LKML , Arjan van de Veen , "H. Peter Anvin" , Peter Zijlstra , Dan Hecht , Garrett Smith Subject: Re: [RFC patch 0/4] TSC calibration improvements In-Reply-To: Message-ID: References: <20080904160036.GA18382@elte.hu> <20080904190728.59634020@lxorguk.ukuu.org.uk> <20080904204305.GA29065@elte.hu> <20080904205236.GA3864@elte.hu> <20080904213350.GA15678@elte.hu> <1220653095.14401.72.camel@alok-dev1> User-Agent: Alpine 1.10 (LFD 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 6 Sep 2008, Thomas Gleixner wrote: > > If Alok has the second check in place and is actually worried about > that 288us impact, then we can add the following (untested), which > does not impact the speed of the check. Guys, please. Show some _taste_. Dammit, stop adding random crap to "native_calibrate_tsc()" and make it look like total and utter SHIT. If you want to do that tsc1 = tsc_read_refs(&ref1, hpet); .. tsc2 = tsc_read_refs(&ref1, hpet); around calibration and comparing it, then do it *once*. Do it over the whole thing. Do it in a function of its own, instead of making this horrible and unreadable mess. This patch may be fine as a "let's check if it works" thing, but please don't send out total SH*T to public lists. Some _tasted_ in programming, please! Linus