[PATCHv8 00/12] Contiguous Memory Allocator

David Brown davidb at codeaurora.org
Thu Dec 23 13:04:51 EST 2010

Felipe Contreras <felipe.contreras at gmail.com> writes:

> On Thu, Dec 23, 2010 at 4:16 PM, Russell King - ARM Linux

> A generic solution (that I think I already proposed) would be to
> reserve a chunk of memory for the CMA that can be removed from the
> normally mapped kernel memory through memblock at boot time. The size
> of this memory region would be configurable through kconfig. Then, the
> CMA would have a "dma" flag or something, and take chunks out of it
> until there's no more, and then return errors. That would work for
> ARM.

That sounds an awful lot like the Android kernel's pmem implementation.

Solving this problem is important for us as well, but, I'm not sure I
see a better solution that something like Felipe suggests.

The disadvantage, of course, being that the memory isn't available for
the system when the user isn't doing the multi-media.


Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.

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