Messages in this thread | | | From | Robin Murphy <> | Subject | Re: [PATCH 0/4] numa, iommu/smmu: IOMMU/SMMU driver optimization for NUMA systems | Date | Wed, 22 Aug 2018 15:56:43 +0100 |
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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.
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.
Robin.
[1] https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1693026.html
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