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    SubjectRe: [PATCH] WIP! media: uvcvideo: Use dma_alloc_noncontiguos API
    On Wed, Nov 18, 2020 at 03:25:46PM +0100, Ricardo Ribalda wrote:
    > On architectures where the is no coherent caching such as ARM use the
    > dma_alloc_noncontiguos API and handle manually the cache flushing using
    > dma_sync_single().
    >
    > With this patch on the affected architectures we can measure up to 20x
    > performance improvement in uvc_video_copy_data_work().

    This has a bunch of crazy long lines, but otherwise looks fine to me.

    >
    > Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
    > ---
    >
    > This patch depends on dma_alloc_contiguous API1315351diffmboxseries

    How do we want to proceed? Do the media maintainers want to pick up
    that patch? Should I pick up the media patch in the dma-mapping tree?

    Can you respost a combined series to get started?

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