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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable 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 713B1C433DF for ; Mon, 6 Jul 2020 20:19:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4D3BE206B6 for ; Mon, 6 Jul 2020 20:19:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727792AbgGFUT6 (ORCPT ); Mon, 6 Jul 2020 16:19:58 -0400 Received: from mga09.intel.com ([134.134.136.24]:35159 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726540AbgGFUT5 (ORCPT ); Mon, 6 Jul 2020 16:19:57 -0400 IronPort-SDR: nbhH2bSgIDfFYKOctCl/mh7cUL/rIIO54qMOjta0YUpdtmbM1OoCAMr0gQySQWZJYxyK4cS1Gm 0/dD8N+jlYHQ== X-IronPort-AV: E=McAfee;i="6000,8403,9674"; a="149011865" X-IronPort-AV: E=Sophos;i="5.75,321,1589266800"; d="scan'208";a="149011865" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2020 13:19:57 -0700 IronPort-SDR: 3BSlNuO2KXikjBngo+wNaqVNmV3zQUTDkjml4aOc/RpldiXpP1T8cEi6HYwkxOytSN/E8JRvFA R0GfNdOpaQkw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,321,1589266800"; d="scan'208";a="483254110" Received: from iweiny-desk2.sc.intel.com ([10.3.52.147]) by fmsmga005.fm.intel.com with ESMTP; 06 Jul 2020 13:19:56 -0700 Date: Mon, 6 Jul 2020 13:19:56 -0700 From: Ira Weiny To: Ricardo Neri Cc: Giovanni Gherdovich , Srinivas Pandruvada , Thomas Gleixner , Ingo Molnar , Peter Zijlstra , Borislav Petkov , "Rafael J . Wysocki" , x86@kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 2/3] x86, sched: Bail out of frequency invariance if turbo frequency is unknown Message-ID: <20200706201956.GA1390666@iweiny-DESK2.sc.intel.com> References: <20200531182453.15254-1-ggherdovich@suse.cz> <20200531182453.15254-3-ggherdovich@suse.cz> <20200601233418.GA15416@ranerica-svr.sc.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200601233418.GA15416@ranerica-svr.sc.intel.com> User-Agent: Mutt/1.11.1 (2018-12-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 01, 2020 at 04:34:18PM -0700, Ricardo Neri wrote: > On Sun, May 31, 2020 at 08:24:52PM +0200, Giovanni Gherdovich wrote: > > There may be CPUs that support turbo boost but don't declare any turbo > > ratio, i.e. their MSR_TURBO_RATIO_LIMIT is all zeroes. In that condition > > scale-invariant calculations can't be performed. > > > > Signed-off-by: Giovanni Gherdovich > > Suggested-by: Ricardo Neri > > FWIW, > > Tested-by: Ricardo Neri Is this going to make it as a fix to 5.8? Tested-by: Ira Weiny