Received: by 10.223.185.116 with SMTP id b49csp6617697wrg; Thu, 8 Mar 2018 10:16:35 -0800 (PST) X-Google-Smtp-Source: AG47ELujxZprC1ASB/NPIUa//wc3dppzx77yDDt/KVtGYYjijk/4q040iYBLUHpvnu+0yV8/ksyp X-Received: by 10.99.96.66 with SMTP id u63mr22302517pgb.49.1520532995604; Thu, 08 Mar 2018 10:16:35 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1520532995; cv=none; d=google.com; s=arc-20160816; b=XFqESGhTR+SG2mn+8jViSV3FYthmXhtd+tvi+gZ47Pd/LHU9b/ANPktpfrfDUIM1pT yiUSWRZn2GxeD2c550/hzdXgz2+EC9/Wz2nePmIZYJ6840lVsuWg3zmPluGShpZQehm1 6Q4d7kjo4GwaV7wpZIPHGbjXLwx97PsApFON5aKi5Y6568bxNgRELSylNoa6nRffVKrZ sHsASo8FJxPcW7ojfVvo4S4f6AvRlv16JOdeaKowctQML8nlAMI3gVVT/tMoJzRXno+R AQj5AG4UvjP895RF86hCZ1FfNsn5ywV7XYa9w76AuNYYSDHxf8Ctp+YYxUkL4xAVSFxg uSbg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:user-agent:references :message-id:in-reply-to:subject:cc:to:from:date :arc-authentication-results; bh=B0uNBXHE6+pe4uwT6Cdwx5Yh+bB1zI+jWeIgX6wdvMM=; b=UsB9IIV1vuFUODvC/D/KRx/FutaFcC/SwcPtcRqjZi8/WCKZPQf1MfwPC14vyYpYL7 S7P3akeequE7+i/aNAG8peWyOyyMbrgkqORLpI0u1DJ3IYH+qbjV+1EmldJDV1C26uZ4 H8NIEGmNxdvJs4JsayQvNN5xs5yqj2Gcqjk0XpvoS2xYXokLa/IpKMnEbNWfW5kIS948 00g9tCTIVlH4v81IWa9VLGuTfwPQXZuw0XJzA0ibwVmqBovZa+A7cB6f0tYJN1Y0V6XW PYzKXbkf0U6rWTP+TRoTzPoAnF8DxU9Pte0ouQZcv2CivzgBGChj56gSPVdtcGXP7AAn Nxog== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id m8-v6si15586662plk.593.2018.03.08.10.15.57; Thu, 08 Mar 2018 10:16:35 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935931AbeCHSMx (ORCPT + 99 others); Thu, 8 Mar 2018 13:12:53 -0500 Received: from resqmta-ch2-07v.sys.comcast.net ([69.252.207.39]:55360 "EHLO resqmta-ch2-07v.sys.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932177AbeCHSMw (ORCPT ); Thu, 8 Mar 2018 13:12:52 -0500 Received: from resomta-ch2-16v.sys.comcast.net ([69.252.207.112]) by resqmta-ch2-07v.sys.comcast.net with ESMTP id u01zeHdvksEdAu027eHrUw; Thu, 08 Mar 2018 18:12:51 +0000 Received: from gentwo.org ([98.222.162.64]) by resomta-ch2-16v.sys.comcast.net with SMTP id u026eYaOGn2eLu027exTT5; Thu, 08 Mar 2018 18:12:51 +0000 Received: by gentwo.org (Postfix, from userid 1001) id 79F011160312; Thu, 8 Mar 2018 12:12:50 -0600 (CST) Received: from localhost (localhost [127.0.0.1]) by gentwo.org (Postfix) with ESMTP id 767471160150; Thu, 8 Mar 2018 12:12:50 -0600 (CST) Date: Thu, 8 Mar 2018 12:12:50 -0600 (CST) From: Christopher Lameter X-X-Sender: cl@nuc-kabylake To: Chintan Pandya cc: penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] slub: use jitter-free reference while printing age In-Reply-To: <1520492010-19389-1-git-send-email-cpandya@codeaurora.org> Message-ID: References: <1520492010-19389-1-git-send-email-cpandya@codeaurora.org> User-Agent: Alpine 2.20 (DEB 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-CMAE-Envelope: MS4wfOc8GG1wz7Fb0QlqA2e5GmNZbKUBZP2fsUitNCmE4NHBJRifJOkLYPZ+jNQVLeKqifS8Usi8pAk/hgxfTGDZhqb8ilp5HAxIYjUXK2ykzLHXk8FkV3fo hftWL5ttwHvSvenXAFLZT496BUNBRJS0Bf1qwJDKEtSi9IUFxZyZY8kR8qYNEAxuSfCzI9+hZ3WTUMvnKxBttHt+CIyWGhuVhV8/UuCjTmpqKUlcfHiA3LGK 6Fngn/dYyiDEXLbbbIADmGuSAlmsLxgulHGF4ikidJGBqnKebx6oz8K/PMnfrgr7l0I50JmHK6AHDEtP7UB6aABsT5CehDaQuL6eijVUKw/SniUY4tEdS+Ak UOq0PyK0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 8 Mar 2018, Chintan Pandya wrote: > In this case, object got freed later but 'age' > shows otherwise. This could be because, while > printing this info, we print allocation traces > first and free traces thereafter. In between, > if we get schedule out or jiffies increment, > (jiffies - t->when) could become meaningless. Could you show the new output style too? Acked-by: Christoph Lameter