On Wed, Feb 10, 2010 at 01:27:47PM -0800, Randy Dunlap wrote:On 02/10/10 12:37, adharmap@xxxxxxxxxxxxxx wrote:From: Abhijeet Dharmapurikar <adharmap@xxxxxxxxxxx>So when you add these interfaces for other architectures, you will also
Please refer to the post here
http://lkml.org/lkml/2010/1/4/347
These changes are to introduce barrierless dma_map_area and dma_unmap_area and
use them to map the buffers in the scatterlist. For the last buffer, call
the normal dma_map_area(aka with barriers) effectively executing the barrier
at the end of the operation.
Note that the barrierless operations are implemented for few arm
architectures only and I would implement for others once these are okayed by the
community.
update Documentation/DMA-API.txt, right??
Do we need barrier-less interfaces for anything other than the dma_*_sg
functions?
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