Re: [PATCH v2 0/2] Optimize dma_*_from_contiguous calls

2019-05-08 Thread Nicolin Chen 
On Wed, May 08, 2019 at 02:52:54PM +0200, Christoph Hellwig wrote:
> modulo a trivial comment typo I found this looks fine to me.  I plan
> to apply it with that fixed up around -rc2 time when I open the
> dma mapping tree opens for the the 5.3 merge window, unless someone
> finds an issue until then.

Thanks for the help all the way.
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Re: [PATCH v2 0/2] Optimize dma_*_from_contiguous calls

2019-05-08 Thread Christoph Hellwig 
Hi Nicolin,

modulo a trivial comment typo I found this looks fine to me.  I plan
to apply it with that fixed up around -rc2 time when I open the
dma mapping tree opens for the the 5.3 merge window, unless someone
finds an issue until then.
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[PATCH v2 0/2] Optimize dma_*_from_contiguous calls

2019-05-06 Thread Nicolin Chen 
[ 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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