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,URIBL_BLOCKED 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 13936C43144 for ; Mon, 25 Jun 2018 18:03:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C459826001 for ; Mon, 25 Jun 2018 18:03:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C459826001 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=zytor.com 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 S964879AbeFYSDY (ORCPT ); Mon, 25 Jun 2018 14:03:24 -0400 Received: from terminus.zytor.com ([198.137.202.136]:49909 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964834AbeFYSDX (ORCPT ); Mon, 25 Jun 2018 14:03:23 -0400 Received: from hanvin-mobl2.amr.corp.intel.com (fmdmzpr03-ext.fm.intel.com [192.55.54.38]) (authenticated bits=0) by mail.zytor.com (8.15.2/8.15.2) with ESMTPSA id w5PI0kqt1280295 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO); Mon, 25 Jun 2018 11:00:47 -0700 Subject: Re: [PATCH v4 7/7] x86/vdso: Move out the CPU number store To: Thomas Gleixner , Andy Lutomirski Cc: "Bae, Chang Seok" , Ingo Molnar , Andi Kleen , Dave Hansen , "Metzger, Markus T" , "Ravi V. Shankar" , LKML , Peter Zijlstra References: <1529536506-26237-1-git-send-email-chang.seok.bae@intel.com> <1529536506-26237-8-git-send-email-chang.seok.bae@intel.com> <80C1F514-1B4D-4CDC-BD46-6C3AA9601446@amacapital.net> From: "H. Peter Anvin" Message-ID: Date: Mon, 25 Jun 2018 11:00:46 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/25/18 08:40, Thomas Gleixner wrote: > On Fri, 22 Jun 2018, Andy Lutomirski wrote: > >> On Fri, Jun 22, 2018 at 11:02 AM Bae, Chang Seok >> wrote: >>> >>>> Still setup_cpu_number() sucks. >>> >>> How about setup_cpu_and_node_number()? >> >> setup_fast_cpu_node_nr()? setup_cpunr_regs()? I don't have any >> brilliant ideas. Thomas? > > It's really hard to find a good one. setup_cpu_node_cache() might work, but > it's not brilliant either. > Since this applies to the getcpu(2) system call (in addition to the kernel usage), perhaps setup_getcpu()? -hpa