Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751862AbdGHUdy (ORCPT ); Sat, 8 Jul 2017 16:33:54 -0400 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:58198 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750905AbdGHUdw (ORCPT ); Sat, 8 Jul 2017 16:33:52 -0400 Authentication-Results: linux-m68k.org; dkim=none (message not signed) header.d=none;linux-m68k.org; dmarc=none action=none header.from=fb.com; Date: Sat, 8 Jul 2017 16:33:15 -0400 From: Dennis Zhou To: Geert Uytterhoeven CC: Tejun Heo , Christoph Lameter , Linux MM , "linux-kernel@vger.kernel.org" , Subject: Re: [PATCH 3/4] percpu: expose statistics about percpu memory via debugfs Message-ID: <20170708203314.GA16910@dennisz-mbp> References: <20170619232832.27116-1-dennisz@fb.com> <20170619232832.27116-4-dennisz@fb.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: 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1;SN1PR15MB0511;20:hl8bXvQJTFJr0iaWlXtG4/Ldlh6YiLesAoIOyU5bkbDL19YmEokxwZeynYjX+WWO6wH91M54myXU69WAkh9CBOjeZyMN9rsYdfTIkErrNPIOeVpfp/LcWijmCqB1sCspzUHbUIk1lK4UarpGJZ4hayx/+n1zneMyvilGrkndiew= X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Jul 2017 20:33:22.9261 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN1PR15MB0511 X-OriginatorOrg: fb.com X-Proofpoint-Spam-Reason: safe X-FB-Internal: Safe X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-07-08_09:,, signatures=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 464 Lines: 22 On Fri, Jul 07, 2017 at 10:16:01AM +0200, Geert Uytterhoeven wrote: > Hi Dennis, > > On Tue, Jun 20, 2017 at 1:28 AM, Dennis Zhou wrote: > > Just wondering: does this option make sense to enable on !SMP? > > If not, you may want to make it depend on SMP. > > Thanks! > > Gr{oetje,eeting}s, > > Geert Hi Geert, The percpu allocator is still used on UP configs, so it would still provide useful data. Thanks, Dennis