On 01/10/2017 12:10 PM, Vincent ABRIOU wrote: > > > On 01/09/2017 04:10 PM, Hans Verkuil wrote: >> On 09/12/2016 10:47 AM, Vincent Abriou wrote: >>> It allows to simulate the behavior of hardware with such limitations or >>> to connect vivid to real hardware with such limitations. >>> >>> Add the "allocators" module parameter option to let vivid use the >>> dma-contig instead of vmalloc. >>> >>> Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> >>> Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx> >>> Signed-off-by: Vincent Abriou <vincent.abriou@xxxxxx> >>> >>> Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> >>> Cc: Hans Verkuil <hans.verkuil@xxxxxxxxx> >>> --- >>> Documentation/media/v4l-drivers/vivid.rst | 8 ++++++++ >>> drivers/media/platform/vivid/Kconfig | 2 ++ >>> drivers/media/platform/vivid/vivid-core.c | 32 ++++++++++++++++++++++++++----- >>> 3 files changed, 37 insertions(+), 5 deletions(-) >>> >>> diff --git a/Documentation/media/v4l-drivers/vivid.rst b/Documentation/media/v4l-drivers/vivid.rst >>> index c8cf371..3e44b22 100644 >>> --- a/Documentation/media/v4l-drivers/vivid.rst >>> +++ b/Documentation/media/v4l-drivers/vivid.rst >>> @@ -263,6 +263,14 @@ all configurable using the following module options: >>> removed. Unless overridden by ccs_cap_mode and/or ccs_out_mode the >>> will default to enabling crop, compose and scaling. >>> >>> +- allocators: >>> + >>> + memory allocator selection, default is 0. It specifies the way buffers >>> + will be allocated. >>> + >>> + - 0: vmalloc >>> + - 1: dma-contig >> >> Could you add support for dma-sg as well? I think that would be fairly trivial (unless >> I missed something). >> >> Once that's added (or it's clear dma-sg won't work for some reason), then I'll merge this. >> >> Regards, >> >> Hans >> > > Hi Hans, > > What is the difference between a vmalloc allocation exported in DMABUF > that will populate the sg and dma-sg allocation? True. That wouldn't matter. I'm merging this for 4.12. Thanks! Hans
