Re: [PATCH 0/5] OMAPFB: use dma_alloc instead of omap's vram

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi,

On 2012-11-21 16:22, Jello huang wrote:
> HI Tomi,
> we need  one rank of cma to allocate the memory for driver in kernel
> space .And the default CMA is for allocating memory frome usespace.So
> if we allocate the memory from the
> default CMA zone ,there maybe introduce fragmention to the default CMA
> zone.The kernel space memory donot touch the memory from userspace

Can you elaborate a bit? I didn't understand your point. Are you saying
each kernel driver that uses dma_alloc should have their own CMA zone?
That doesn't make sense...

How do you allocate CMA memory from userspace?

 Tomi


Attachment: signature.asc
Description: OpenPGP digital signature


[Index of Archives]     [Linux Arm (vger)]     [ARM Kernel]     [ARM MSM]     [Linux Tegra]     [Linux WPAN Networking]     [Linux Wireless Networking]     [Maemo Users]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux