Received: by 2002:a05:6902:102b:0:0:0:0 with SMTP id x11csp449049ybt; Mon, 6 Jul 2020 13:22:26 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyOqVWe9GVmYXv5NbZaIa2rKdWH1guq9WqrgPf+NY/wuXEGUcGlQ1jZzF71PG6tMvELPQgF X-Received: by 2002:a50:c355:: with SMTP id q21mr55220475edb.121.1594066946121; Mon, 06 Jul 2020 13:22:26 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1594066946; cv=none; d=google.com; s=arc-20160816; b=UpncyXYZE/LCNgEVdSCLMRwI6vf7Dl+Q35US2s/R+SG4WY6R5/SCQxihRVQg8Cvd5o EX9YYFhVjaxmlwNh2bHBpUIqqTnzQSO6jLTQCewduDJuOQ9hWWuWEWazpsjuXUDIBPAx Ykn/c6QecUy4c6bac4yMJvnrKO7cxnit1tfWiSPSyhpylrGrAeAc4kUvnW5wt2A6hiJu 8EvYlY9wSOZaWySemEnq4UdvlzsT0xcSwLHqaN1b4Tx/hTOr+CPIZvx8CzvyE8wS1ezZ WkA8i1diiBAdwmv1yfdef8wWRiQDN6w/qrEhMCmWNsdMBf1F2qlc5JzmhUvhMI2pAI42 oiBg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:ironport-sdr:ironport-sdr; bh=nBtRg0IdyQD/l3U37xyvZwmvWYfgGuf34yd3xvL24a0=; b=wnA1j/JvVcVygUTtg6ETiOKHW/0CxYvd1bXz7ehG5UqkTZCDQlXkrf2V/BSJDfvNBi ooVKL4WnUSIYYsZIkvSNh/7LzpECBRMh8PXEzCm8FhIQ48iGbxtzMB4SZ9lSI62wz6jg 3LewPgHYdINN5RsdzDwaOSEMI0kjMmScvUv8DIX+9KK0dfHyrbqlGrSxOXjvX5t+97cL i1YNPDuhuwtZSEXUvbACsaXvVIuGdcJxPCepYEhcfduh99xLVvYbfFO1snSz8T9qjlQn /nBgtivTDIw8wSnS4RAiMXeTRhvgsmpSmjHT3IrGapVq+fxqmf3tGdklCAvnSlZz9zEb 4Jew== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id o3si13430309eje.601.2020.07.06.13.22.03; Mon, 06 Jul 2020 13:22:26 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727076AbgGFUT6 (ORCPT + 99 others); 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