[Linaro-mm-sig] Buffer sharing proof-of-concept
pullip.cho at samsung.com
Tue Aug 2 11:59:30 UTC 2011
On Tue, Aug 2, 2011 at 6:48 PM, Marek Szyprowski
<m.szyprowski at samsung.com> wrote:
> Hello Everyone,
> This patchset introduces the proof-of-concept infrastructure for buffer
> sharing between multiple devices using file descriptors. The infrastructure
> has been integrated with V4L2 framework, more specifically videobuf2 and two
> S5P drivers FIMC (capture interface) and TV drivers, but it can be easily
> used by other kernel subsystems, like DRI.
> In this patch the buffer object has been simplified to absolute minimum - it
> contains only the buffer physical address (only physically contiguous
> buffers are supported), but this can be easily extended to complete scatter
> list in the future.
Is this patch set an attempt to share a buffer between different
processes via open file descriptors?
Your patches seems to include several constructs to pack information
about a buffer in an open file descriptor
and to unpack it.
I don't have any idea what is the purpose of your attempts.
Is it the first step to the unified memory model that is being
discussed in Linaro?
More information about the Linaro-mm-sig