linux-kernel - Re: [PATCH v2] slub: use jitter-free reference while printing age

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Message-ID: <2e02a8f9-8a28-1db4-3dde-8490ee294e5f@codeaurora.org>
Date:   Fri, 9 Mar 2018 10:48:24 +0530
From:   Chintan Pandya <cpandya@...eaurora.org>
To:     Christopher Lameter <cl@...ux.com>
Cc:     penberg@...nel.org, rientjes@...gle.com, iamjoonsoo.kim@....com,
        akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] slub: use jitter-free reference while printing age



On 3/8/2018 11:42 PM, Christopher Lameter wrote:
> 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?

New output will exactly be same. 'age' is still
staying with single jiffies ref in both prints.

> 
> Acked-by: Christoph Lameter <cl@...ux.com>
Thanks


Chintan
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