Messages in this thread | | | Subject | Re: [PATCH 0/4] numa, iommu/smmu: IOMMU/SMMU driver optimization for NUMA systems | From | John Garry <> | Date | Wed, 22 Aug 2018 17:07:55 +0100 |
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On 22/08/2018 15:56, Robin Murphy wrote: > Hi John, > > On 22/08/18 14:44, John Garry wrote: >> 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. >
Hi Robin,
Thanks for the info. I thought I remembered 4b12 but couldn't put my finger on it.
> Looks like I ended up doing the version of the io-pgtable change that I > suggested here, which was merged recently (4b123757eeaa). Patch #3 > should also be effectively obsolete now since the SWIOTLB/dma-direct > rework (21f237e4d085). Apparently I also started reworking patch #4 in > my tree at some point but sidelined it - I think that was at least > partly due to another thread[1] which made it seem less clear-cut > whether this is always the right thing to do.
Right, so #4 seems less straightforward and not directly related to IOMMU driver anyway.
Cheers, John
> > Robin. > > [1] > https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1693026.html > > . >
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