From: Bart Van Assche <bart.vanassche@sandisk.com>
To: Doug Ledford <dledford@redhat.com>
Cc: <linux-rdma@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH 0/9] IB: Optimize DMA mapping
Date: Tue, 10 Jan 2017 16:56:39 -0800 [thread overview]
Message-ID: <20170111005648.14988-1-bart.vanassche@sandisk.com> (raw)
Hello Doug,
As you know there are two sets of DMA mapping operations in the Linux
kernel:
- One set of DMA mapping operations that is used by most drivers.
- Another set of DMA mapping operations that is only used by the RDMA
drivers.
Having two sets of DMA mapping operations is not only a source of
confusion but also a source of unnecessary overhead. The DMA mapping
operations are in the hot path so it is important that the overhead
of these operations is as low as possible. Hence this patch series
that converts the RDMA code to the standard DMA mapping API and
thereby eliminates the if (dev->dma_ops) test from the hot path. An
additional benefit is that the size of HW and SW drivers that do not
use DMA is reduced by switching to dma_virt_ops.
Bart Van Assche (9):
treewide: Constify most dma_map_ops structures
Move dma_ops from archdata into struct device
dma: Add dma_virt_ops
IB/hf1: Remove DMA mapping code
IB/qib: Remove DMA mapping code
IB: Use dma_virt_ops instead of duplicating it
RDS: IB: Remove an unused structure member
IB: Convert ib_dma_*_coherent() argument type from u64 into dma_addr_t
treewide: Inline ib_dma_map_*() functions
arch/alpha/include/asm/dma-mapping.h | 4 +-
arch/alpha/kernel/pci-noop.c | 4 +-
arch/alpha/kernel/pci_iommu.c | 4 +-
arch/arc/include/asm/dma-mapping.h | 4 +-
arch/arc/mm/dma.c | 2 +-
arch/arm/common/dmabounce.c | 2 +-
arch/arm/include/asm/device.h | 1 -
arch/arm/include/asm/dma-mapping.h | 23 +-
arch/arm/mm/dma-mapping.c | 22 +-
arch/arm/xen/mm.c | 4 +-
arch/arm64/include/asm/device.h | 1 -
arch/arm64/include/asm/dma-mapping.h | 12 +-
arch/arm64/mm/dma-mapping.c | 14 +-
arch/avr32/include/asm/dma-mapping.h | 4 +-
arch/avr32/mm/dma-coherent.c | 2 +-
arch/blackfin/include/asm/dma-mapping.h | 4 +-
arch/blackfin/kernel/dma-mapping.c | 2 +-
arch/c6x/include/asm/dma-mapping.h | 4 +-
arch/c6x/kernel/dma.c | 2 +-
arch/cris/arch-v32/drivers/pci/dma.c | 2 +-
arch/cris/include/asm/dma-mapping.h | 6 +-
arch/frv/include/asm/dma-mapping.h | 4 +-
arch/frv/mb93090-mb00/pci-dma-nommu.c | 2 +-
arch/frv/mb93090-mb00/pci-dma.c | 2 +-
arch/h8300/include/asm/dma-mapping.h | 4 +-
arch/h8300/kernel/dma.c | 2 +-
arch/hexagon/include/asm/dma-mapping.h | 7 +-
arch/hexagon/kernel/dma.c | 4 +-
arch/ia64/hp/common/hwsw_iommu.c | 4 +-
arch/ia64/hp/common/sba_iommu.c | 4 +-
arch/ia64/include/asm/dma-mapping.h | 7 +-
arch/ia64/include/asm/machvec.h | 4 +-
arch/ia64/kernel/dma-mapping.c | 4 +-
arch/ia64/kernel/pci-dma.c | 10 +-
arch/ia64/kernel/pci-swiotlb.c | 2 +-
arch/m32r/include/asm/device.h | 2 +-
arch/m32r/include/asm/dma-mapping.h | 4 +-
arch/m68k/include/asm/dma-mapping.h | 4 +-
arch/m68k/kernel/dma.c | 2 +-
arch/metag/include/asm/dma-mapping.h | 4 +-
arch/metag/kernel/dma.c | 2 +-
arch/microblaze/include/asm/dma-mapping.h | 4 +-
arch/microblaze/kernel/dma.c | 2 +-
arch/mips/cavium-octeon/dma-octeon.c | 4 +-
arch/mips/include/asm/device.h | 5 -
arch/mips/include/asm/dma-mapping.h | 9 +-
.../include/asm/mach-cavium-octeon/dma-coherence.h | 2 +-
arch/mips/include/asm/netlogic/common.h | 2 +-
arch/mips/loongson64/common/dma-swiotlb.c | 2 +-
arch/mips/mm/dma-default.c | 4 +-
arch/mips/netlogic/common/nlm-dma.c | 2 +-
arch/mips/pci/pci-octeon.c | 2 +-
arch/mn10300/include/asm/dma-mapping.h | 4 +-
arch/mn10300/mm/dma-alloc.c | 2 +-
arch/nios2/include/asm/dma-mapping.h | 4 +-
arch/nios2/mm/dma-mapping.c | 2 +-
arch/openrisc/include/asm/dma-mapping.h | 4 +-
arch/openrisc/kernel/dma.c | 2 +-
arch/parisc/include/asm/dma-mapping.h | 8 +-
arch/parisc/kernel/drivers.c | 2 +-
arch/parisc/kernel/pci-dma.c | 4 +-
arch/powerpc/include/asm/device.h | 4 -
arch/powerpc/include/asm/dma-mapping.h | 19 +-
arch/powerpc/include/asm/pci.h | 4 +-
arch/powerpc/include/asm/ps3.h | 2 +-
arch/powerpc/include/asm/swiotlb.h | 2 +-
arch/powerpc/kernel/dma-swiotlb.c | 2 +-
arch/powerpc/kernel/dma.c | 8 +-
arch/powerpc/kernel/pci-common.c | 6 +-
arch/powerpc/platforms/cell/iommu.c | 6 +-
arch/powerpc/platforms/pasemi/iommu.c | 2 +-
arch/powerpc/platforms/pasemi/setup.c | 2 +-
arch/powerpc/platforms/powernv/npu-dma.c | 2 +-
arch/powerpc/platforms/ps3/system-bus.c | 8 +-
arch/powerpc/platforms/pseries/ibmebus.c | 4 +-
arch/powerpc/platforms/pseries/vio.c | 2 +-
arch/s390/include/asm/device.h | 1 -
arch/s390/include/asm/dma-mapping.h | 6 +-
arch/s390/pci/pci.c | 2 +-
arch/s390/pci/pci_dma.c | 2 +-
arch/sh/include/asm/dma-mapping.h | 4 +-
arch/sh/kernel/dma-nommu.c | 2 +-
arch/sh/mm/consistent.c | 2 +-
arch/sparc/include/asm/dma-mapping.h | 10 +-
arch/sparc/kernel/iommu.c | 4 +-
arch/sparc/kernel/ioport.c | 8 +-
arch/sparc/kernel/pci_sun4v.c | 2 +-
arch/tile/include/asm/device.h | 3 -
arch/tile/include/asm/dma-mapping.h | 20 +-
arch/tile/kernel/pci-dma.c | 24 +-
arch/unicore32/include/asm/dma-mapping.h | 4 +-
arch/unicore32/mm/dma-swiotlb.c | 2 +-
arch/x86/include/asm/device.h | 5 +-
arch/x86/include/asm/dma-mapping.h | 11 +-
arch/x86/include/asm/iommu.h | 2 +-
arch/x86/kernel/amd_gart_64.c | 2 +-
arch/x86/kernel/pci-calgary_64.c | 6 +-
arch/x86/kernel/pci-dma.c | 4 +-
arch/x86/kernel/pci-nommu.c | 2 +-
arch/x86/kernel/pci-swiotlb.c | 2 +-
arch/x86/pci/common.c | 2 +-
arch/x86/pci/sta2x11-fixup.c | 10 +-
arch/x86/xen/pci-swiotlb-xen.c | 2 +-
arch/xtensa/include/asm/device.h | 4 -
arch/xtensa/include/asm/dma-mapping.h | 9 +-
arch/xtensa/kernel/pci-dma.c | 2 +-
drivers/infiniband/core/mad.c | 28 +-
drivers/infiniband/core/rw.c | 30 +-
drivers/infiniband/core/umem.c | 4 +-
drivers/infiniband/core/umem_odp.c | 6 +-
drivers/infiniband/hw/hfi1/dma.c | 183 ------------
drivers/infiniband/hw/mlx4/cq.c | 2 +-
drivers/infiniband/hw/mlx4/mad.c | 28 +-
drivers/infiniband/hw/mlx4/mr.c | 4 +-
drivers/infiniband/hw/mlx4/qp.c | 10 +-
drivers/infiniband/hw/mlx5/mr.c | 4 +-
drivers/infiniband/hw/qib/qib_dma.c | 169 -----------
drivers/infiniband/hw/qib/qib_keys.c | 5 +-
drivers/infiniband/sw/rdmavt/Makefile | 2 +-
drivers/infiniband/sw/rdmavt/dma.c | 198 -------------
drivers/infiniband/sw/rdmavt/dma.h | 53 ----
drivers/infiniband/sw/rdmavt/mr.c | 8 +-
drivers/infiniband/sw/rdmavt/vt.c | 5 +-
drivers/infiniband/sw/rdmavt/vt.h | 1 -
drivers/infiniband/sw/rxe/Makefile | 1 -
drivers/infiniband/sw/rxe/rxe_dma.c | 183 ------------
drivers/infiniband/sw/rxe/rxe_loc.h | 2 -
drivers/infiniband/sw/rxe/rxe_verbs.c | 3 +-
drivers/infiniband/ulp/ipoib/ipoib_cm.c | 20 +-
drivers/infiniband/ulp/ipoib/ipoib_ib.c | 22 +-
drivers/infiniband/ulp/iser/iscsi_iser.c | 6 +-
drivers/infiniband/ulp/iser/iser_initiator.c | 38 +--
drivers/infiniband/ulp/iser/iser_memory.c | 12 +-
drivers/infiniband/ulp/iser/iser_verbs.c | 2 +-
drivers/infiniband/ulp/isert/ib_isert.c | 60 ++--
drivers/infiniband/ulp/srp/ib_srp.c | 50 ++--
drivers/infiniband/ulp/srpt/ib_srpt.c | 12 +-
drivers/iommu/amd_iommu.c | 10 +-
drivers/misc/mic/bus/mic_bus.c | 4 +-
drivers/misc/mic/bus/scif_bus.c | 4 +-
drivers/misc/mic/bus/scif_bus.h | 2 +-
drivers/misc/mic/bus/vop_bus.c | 2 +-
drivers/misc/mic/host/mic_boot.c | 4 +-
drivers/nvme/host/rdma.c | 22 +-
drivers/nvme/target/rdma.c | 20 +-
drivers/parisc/ccio-dma.c | 2 +-
drivers/parisc/sba_iommu.c | 2 +-
drivers/pci/host/vmd.c | 2 +-
.../staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h | 14 +-
include/linux/device.h | 2 +
include/linux/dma-mapping.h | 55 ++--
include/linux/mic_bus.h | 2 +-
include/rdma/ib_verbs.h | 310 ---------------------
include/xen/arm/hypervisor.h | 2 +-
lib/Makefile | 1 +
lib/dma-noop.c | 4 +-
lib/dma-virt.c | 73 +++++
net/9p/trans_rdma.c | 12 +-
net/rds/ib.h | 45 +--
net/rds/ib_cm.c | 18 +-
net/rds/ib_fmr.c | 10 +-
net/rds/ib_frmr.c | 8 +-
net/rds/ib_mr.h | 1 -
net/rds/ib_rdma.c | 6 +-
net/rds/ib_recv.c | 14 +-
net/rds/ib_send.c | 28 +-
net/sunrpc/xprtrdma/fmr_ops.c | 6 +-
net/sunrpc/xprtrdma/frwr_ops.c | 6 +-
net/sunrpc/xprtrdma/rpc_rdma.c | 14 +-
net/sunrpc/xprtrdma/svc_rdma_backchannel.c | 4 +-
net/sunrpc/xprtrdma/svc_rdma_recvfrom.c | 8 +-
net/sunrpc/xprtrdma/svc_rdma_sendto.c | 14 +-
net/sunrpc/xprtrdma/svc_rdma_transport.c | 8 +-
net/sunrpc/xprtrdma/verbs.c | 8 +-
174 files changed, 637 insertions(+), 1764 deletions(-)
delete mode 100644 drivers/infiniband/hw/hfi1/dma.c
delete mode 100644 drivers/infiniband/hw/qib/qib_dma.c
delete mode 100644 drivers/infiniband/sw/rdmavt/dma.c
delete mode 100644 drivers/infiniband/sw/rdmavt/dma.h
delete mode 100644 drivers/infiniband/sw/rxe/rxe_dma.c
create mode 100644 lib/dma-virt.c
--
2.11.0
next reply other threads:[~2017-01-11 0:58 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-11 0:56 Bart Van Assche [this message]
2017-01-11 0:56 ` [PATCH 3/9] dma: Add dma_virt_ops Bart Van Assche
2017-01-11 8:56 ` Christoph Hellwig
2017-01-12 0:07 ` Bart Van Assche
2017-01-11 0:56 ` [PATCH 4/9] IB/hf1: Remove DMA mapping code Bart Van Assche
2017-01-11 0:56 ` [PATCH 5/9] IB/qib: " Bart Van Assche
2017-01-12 13:15 ` Leon Romanovsky
2017-01-11 0:56 ` [PATCH 6/9] IB: Use dma_virt_ops instead of duplicating it Bart Van Assche
2017-01-12 13:17 ` Leon Romanovsky
2017-01-11 0:56 ` [PATCH 7/9] RDS: IB: Remove an unused structure member Bart Van Assche
2017-01-11 1:21 ` santosh.shilimkar
2017-01-11 0:56 ` [PATCH 8/9] IB: Convert ib_dma_*_coherent() argument type from u64 into dma_addr_t Bart Van Assche
2017-01-12 13:12 ` Leon Romanovsky
2017-01-11 0:56 ` [PATCH 9/9] treewide: Inline ib_dma_map_*() functions Bart Van Assche
2017-01-12 11:45 ` Sagi Grimberg
2017-01-12 13:09 ` Leon Romanovsky
2017-01-11 1:28 ` [PATCH 0/9] IB: Optimize DMA mapping santosh.shilimkar
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