Messages in this thread | | | From | Nicolin Chen <> | Subject | [PATCH v2 0/2] Optimize dma_*_from_contiguous calls | Date | Mon, 6 May 2019 15:33:32 -0700 |
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[ Per discussion at v1, we decide to add two new functions and start replacing callers one by one. For this series, it only touches the dma-direct part. And instead of merging two PATCHes, I still keep them separate so that we may easily revert PATCH-2 if anything bad happens as last time -- PATCH-1 is supposed to be a safe cleanup. ]
This series of patches try to optimize dma_*_from_contiguous calls: PATCH-1 abstracts two new functions and applies to dma-direct.c file. PATCH-2 saves single pages and reduce fragmentations from CMA area.
Please check their commit messages for detail changelog.
Nicolin Chen (2): dma-contiguous: Abstract dma_{alloc,free}_contiguous() dma-contiguous: Use fallback alloc_pages for single pages
include/linux/dma-contiguous.h | 10 ++++++ kernel/dma/contiguous.c | 57 ++++++++++++++++++++++++++++++++++ kernel/dma/direct.c | 24 +++----------- 3 files changed, 71 insertions(+), 20 deletions(-)
-- 2.17.1
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