linux-kernel - Re: [PATCH 0/6] RFC v2: mm: gup/dma tracking

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Message-ID: <e2bac0b5-f81f-c2f1-95eb-214c64e89ee0@nvidia.com>
Date:   Tue, 5 Feb 2019 13:55:59 -0800
From:   John Hubbard <jhubbard@...dia.com>
To:     Tom Talpey <tom@...pey.com>, <john.hubbard@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>, <linux-mm@...ck.org>
CC:     Al Viro <viro@...iv.linux.org.uk>,
        Christian Benvenuti <benve@...co.com>,
        Christoph Hellwig <hch@...radead.org>,
        Christopher Lameter <cl@...ux.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Dave Chinner <david@...morbit.com>,
        Dennis Dalessandro <dennis.dalessandro@...el.com>,
        Doug Ledford <dledford@...hat.com>, Jan Kara <jack@...e.cz>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Jerome Glisse <jglisse@...hat.com>,
        Matthew Wilcox <willy@...radead.org>,
        Michal Hocko <mhocko@...nel.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Mike Marciniszyn <mike.marciniszyn@...el.com>,
        Ralph Campbell <rcampbell@...dia.com>,
        LKML <linux-kernel@...r.kernel.org>,
        <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH 0/6] RFC v2: mm: gup/dma tracking

On 2/5/19 5:38 AM, Tom Talpey wrote:
> 
> Ok, I'm satisfied the four-9's latency spike is in not your code. :-)
> Results look good relative to baseline. Thanks for doublechecking!
> 
> Tom.


Great, in that case, I'll put the new before-and-after results in the next 
version. Appreciate your help here, as always!

thanks,
-- 
John Hubbard
NVIDIA