[Linaro-mm-sig] [PATCH] dma-buf: add vmap interface (v2)

2012-05-18 Thread Sumit Semwal
Hi Dave, On 17 May 2012 16:01, Dave Airlie wrote: > From: Dave Airlie > > The main requirement I have for this interface is for scanning out > using the USB gpu devices. Since these devices have to read the > framebuffer on updates and linearly compress it, using kmaps > is a major overhead for

Re: [Linaro-mm-sig] [PATCH] dma-buf: add vmap interface (v2)

2012-05-17 Thread Sumit Semwal
Hi Dave, On 17 May 2012 16:01, Dave Airlie wrote: > From: Dave Airlie > > The main requirement I have for this interface is for scanning out > using the USB gpu devices. Since these devices have to read the > framebuffer on updates and linearly compress it, using kmaps > is a major overhead for