From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 68CEAC0044C for ; Thu, 1 Nov 2018 15:34:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 37CD32081B for ; Thu, 1 Nov 2018 15:34:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 37CD32081B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728883AbeKBAhx (ORCPT ); Thu, 1 Nov 2018 20:37:53 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:57664 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727996AbeKBAhx (ORCPT ); Thu, 1 Nov 2018 20:37:53 -0400 Received: from p5492fe24.dip0.t-ipconnect.de ([84.146.254.36] helo=nanos) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1gIEzD-0006MS-97; Thu, 01 Nov 2018 16:34:19 +0100 Date: Thu, 1 Nov 2018 16:34:18 +0100 (CET) From: Thomas Gleixner To: Daniel Vacek cc: x86@kernel.org, Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , LKML , Peter Zijlstra Subject: Re: [PATCH] tsc: make calibration refinement more robust In-Reply-To: <1541085133-32534-1-git-send-email-neelx@redhat.com> Message-ID: References: <1541085133-32534-1-git-send-email-neelx@redhat.com> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Daniel, On Thu, 1 Nov 2018, Daniel Vacek wrote: Please use 'x86/tsc:' as prefix. git log path/to/file usually gives you a reasonable hint about prefixes. > -#define MAX_RETRIES 5 > -#define SMI_TRESHOLD 50000 > +#define MAX_RETRIES 5 > +#define TSC_THRESHOLD (tsc_khz >> 5) This breaks pit_hpet_ptimer_calibrate_cpu() because at that point tsc_hkz is 0. Thanks, tglx