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SubjectRe: [PATCH 2/3] [media] videobuf2-dma-streaming: new videobuf2 memory allocator
Date
> Getting back to your patch - in your approach cpu cache handling is
> missing. I suspect that it worked fine only because it has been
> tested on some simple platform without any cpu caches (or with very
> small ones).

Is missing from the memory allocator because I do it on the device
driver. The current operations don't allow me to do that in the memory
allocator.


> Please check the following thread:
> http://www.spinics.net/lists/linux-media/msg51768.html where Tomasz
> has posted his ongoing effort on updating and extending videobuf2 and
> dma-contig allocator. Especially the patch
> http://www.spinics.net/lists/linux-media/msg51776.html will be
> interesting for you, because cpu cache synchronization
> (dma_sync_single_for_device / dma_sync_single_for_cpu) should be
> called from prepare/finish callbacks.

You are right, it is interesting because avoid me to use cache sync in
my driver. Can I work on these patches?

From this page I understand that these patches are not approved yet
https://patchwork.kernel.org/project/linux-media/list/?page=2

--
Federico Vaga


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