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=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 73BE1CA9ED0 for ; Fri, 18 Oct 2019 04:55:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 496ED222CD for ; Fri, 18 Oct 2019 04:55:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="WlTTFGi+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731803AbfJREzF (ORCPT ); Fri, 18 Oct 2019 00:55:05 -0400 Received: from hqemgate15.nvidia.com ([216.228.121.64]:14945 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726103AbfJREzE (ORCPT ); Fri, 18 Oct 2019 00:55:04 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Thu, 17 Oct 2019 21:34:56 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Thu, 17 Oct 2019 21:34:45 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Thu, 17 Oct 2019 21:34:45 -0700 Received: from DRHQMAIL107.nvidia.com (10.27.9.16) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 18 Oct 2019 04:34:45 +0000 Received: from [10.110.48.28] (10.124.1.5) by DRHQMAIL107.nvidia.com (10.27.9.16) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 18 Oct 2019 04:34:44 +0000 Subject: Re: [PATCH] cpufreq: powernv: fix stack bloat and NR_CPUS limitation To: Viresh Kumar CC: Shilpasri G Bhat , LKML , Preeti U Murthy , "Rafael J . Wysocki" , , References: <20191018000431.1675281-1-jhubbard@nvidia.com> <20191018042715.f76bawmoyk66isap@vireshk-i7> From: John Hubbard X-Nvconfidentiality: public Message-ID: Date: Thu, 17 Oct 2019 21:34:44 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20191018042715.f76bawmoyk66isap@vireshk-i7> X-Originating-IP: [10.124.1.5] X-ClientProxiedBy: HQMAIL105.nvidia.com (172.20.187.12) To DRHQMAIL107.nvidia.com (10.27.9.16) Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1571373296; bh=Rx+GgSz5ZaCKM6ZVWjMWxWP6l9wESsNJ8Pg+CRriU3k=; h=X-PGP-Universal:Subject:To:CC:References:From:X-Nvconfidentiality: Message-ID:Date:User-Agent:MIME-Version:In-Reply-To: X-Originating-IP:X-ClientProxiedBy:Content-Type:Content-Language: Content-Transfer-Encoding; b=WlTTFGi+AW1cpVxLjrs3k8ct7IRcSwLMlcB1VoUvIgOvhpy0sZ7jLoFWyB5BHgNiM 5wp7xLBwKA2KvbE5a57Ovnr0pgIO1B8wmxe5lOcpdzaChYnL4yshjN+bKWPDZdELEC y6g/otss4TxpEUxCddKfKfsIKq9efIPvw/Ac+RMdtQhpc7m5ha1SBpohR3cgEmKNp7 RSvUEvFKLYIpfE+ObXISnyRzueh0vip+XorSEzzaVDrk2ubY10iIZQI7BXD/nQEtKB 39GaFWZiltzh212WsM6Vk3/Qk4IZx+C+j1KSICJbrQZpJkhSU2WFJBOUBlfAgnglt9 jNdFGP9PTB6PA== Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org On 10/17/19 9:27 PM, Viresh Kumar wrote: > On 17-10-19, 17:04, John Hubbard wrote: >> The following build warning occurred on powerpc 64-bit builds: >> >> drivers/cpufreq/powernv-cpufreq.c: In function 'init_chip_info': >> drivers/cpufreq/powernv-cpufreq.c:1070:1: warning: the frame size of 1040 bytes is larger than 1024 bytes [-Wframe-larger-than=] > > How come we are catching this warning after 4 years ? > Newer compilers. And btw, I don't spend a lot of time in powerpc code, so I just recently ran this, and I guess everyone has been on less new compilers so far, it seems. I used a gcc 8.1 cross compiler in this case: $ $ /blue_exp/kernel/cross-compilers/powerpc64/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc -v Using built-in specs. COLLECT_GCC=/blue_exp/kernel/cross-compilers/powerpc64/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc COLLECT_LTO_WRAPPER=/home/jhubbard/blue_exp/kernel/cross-compilers/powerpc64/gcc-8.1.0-nolibc/powerpc64-linux/bin/../libexec/gcc/powerpc64-linux/8.1.0/lto-wrapper Target: powerpc64-linux Configured with: /home/arnd/git/gcc/configure --target=powerpc64-linux --enable-targets=all --prefix=/home/arnd/cross/x86_64/gcc-8.1.0-nolibc/powerpc64-linux --enable-languages=c --without-headers --disable-bootstrap --disable-nls --disable-threads --disable-shared --disable-libmudflap --disable-libssp --disable-libgomp --disable-decimal-float --disable-libquadmath --disable-libatomic --disable-libcc1 --disable-libmpx --enable-checking=release Thread model: single gcc version 8.1.0 (GCC) thanks, John Hubbard NVIDIA