linux-kernel - Re: [PATCH 0/4] numa, iommu/smmu: IOMMU/SMMU driver optimization for NUMA systems

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Date:   Wed, 22 Aug 2018 14:44:33 +0100
From:   John Garry <john.garry@...wei.com>
To:     Ganapatrao Kulkarni <ganapatrao.kulkarni@...ium.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "Will.Deacon@....com" <Will.Deacon@....com>,
        "gklkml16@...il.com" <gklkml16@...il.com>,
        "Tomasz.Nowicki@...ium.com" <Tomasz.Nowicki@...ium.com>,
        "Robert.Richter@...ium.com" <Robert.Richter@...ium.com>,
        "mhocko@...e.com" <mhocko@...e.com>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "vbabka@...e.cz" <vbabka@...e.cz>,
        "jnair@...iumnetworks.com" <jnair@...iumnetworks.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>,
        "thunder.leizhen@...wei.com" <thunder.leizhen@...wei.com>,
        Linuxarm <linuxarm@...wei.com>, "Christoph Hellwig" <hch@....de>
Subject: Re: [PATCH 0/4] numa, iommu/smmu: IOMMU/SMMU driver optimization for
 NUMA systems

On 21/09/2017 09:59, Ganapatrao Kulkarni wrote:
> Adding numa aware memory allocations used for iommu dma allocation and
> memory allocated for SMMU stream tables, page walk tables and command queues.
>
> With this patch, iperf testing on ThunderX2, with 40G NIC card on
> NODE 1 PCI shown same performance(around 30% improvement) as NODE 0.
>
> Ganapatrao Kulkarni (4):
>   mm: move function alloc_pages_exact_nid out of __meminit
>   numa, iommu/io-pgtable-arm: Use NUMA aware memory allocation for smmu
>     translation tables
>   iommu/arm-smmu-v3: Use NUMA memory allocations for stream tables and
>     comamnd queues
>   iommu/dma, numa: Use NUMA aware memory allocations in
>     __iommu_dma_alloc_pages
>
>  drivers/iommu/arm-smmu-v3.c    | 57 +++++++++++++++++++++++++++++++++++++-----
>  drivers/iommu/dma-iommu.c      | 17 +++++++------
>  drivers/iommu/io-pgtable-arm.c |  4 ++-
>  include/linux/gfp.h            |  2 +-
>  mm/page_alloc.c                |  3 ++-
>  5 files changed, 67 insertions(+), 16 deletions(-)
>

Hi Ganapatrao,

Have you any plans for further work on this patchset? I have not seen 
anything since this v1 was posted+discussed.

Thanks,
John

> --
> 2.9.4
>
> _______________________________________________
> iommu mailing list
> iommu@...ts.linux-foundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/iommu
>
> .
>

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