From: Nicolin Chen <nicoleotsuka@gmail.com>
To: hch@lst.de, robin.murphy@arm.com, m.szyprowski@samsung.com
Cc: chris@zankel.net, linux-xtensa@linux-xtensa.org,
keescook@chromium.org, sfr@canb.auug.org.au, tony@atomide.com,
catalin.marinas@arm.com, joro@8bytes.org, will.deacon@arm.com,
linux@armlinux.org.uk, iommu@lists.linux-foundation.org,
linux-kernel@vger.kernel.org, jcmvbkbc@gmail.com,
wsa+renesas@sang-engineering.com, akpm@linux-foundation.org,
treding@nvidia.com, dwmw2@infradead.org, iamjoonsoo.kim@lge.com,
linux-arm-kernel@lists.infradead.org
Subject: [RFC/RFT PATCH 0/2] Optimize dma_*_from_contiguous calls
Date: Mon, 29 Apr 2019 18:55:19 -0700 [thread overview]
Message-ID: <20190430015521.27734-1-nicoleotsuka@gmail.com> (raw)
This series of patches try to optimize dma_*_from_contiguous calls:
PATCH-1 does some abstraction and cleanup.
PATCH-2 saves single pages and reduce fragmentations from CMA area.
Both two patches may impact the source of pages (CMA or normal)
depending on the use cases, so are being tagged with "RFC/RFT".
Please check their commit messages for detail.
Nicolin Chen (2):
dma-contiguous: Simplify dma_*_from_contiguous() function calls
dma-contiguous: Use fallback alloc_pages for single pages
arch/arm/mm/dma-mapping.c | 14 +++-----
arch/arm64/mm/dma-mapping.c | 11 +++---
arch/xtensa/kernel/pci-dma.c | 19 +++-------
drivers/iommu/amd_iommu.c | 20 +++--------
drivers/iommu/intel-iommu.c | 20 ++---------
include/linux/dma-contiguous.h | 15 +++-----
kernel/dma/contiguous.c | 64 ++++++++++++++++++++++------------
kernel/dma/direct.c | 24 +++----------
kernel/dma/remap.c | 11 ++----
9 files changed, 73 insertions(+), 125 deletions(-)
--
2.17.1
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next reply other threads:[~2019-04-30 1:57 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-30 1:55 Nicolin Chen [this message]
2019-04-30 1:55 ` [RFC/RFT PATCH 1/2] dma-contiguous: Simplify dma_*_from_contiguous() function calls Nicolin Chen
2019-04-30 10:56 ` Christoph Hellwig
2019-04-30 12:37 ` Robin Murphy
2019-04-30 15:18 ` Christoph Hellwig
2019-04-30 19:46 ` Nicolin Chen
2019-04-30 12:52 ` Robin Murphy
2019-04-30 15:20 ` Christoph Hellwig
2019-04-30 1:55 ` [RFC/RFT PATCH 2/2] dma-contiguous: Use fallback alloc_pages for single pages Nicolin Chen
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