Messages in this thread |  | | | Date | Tue, 5 Jul 2011 12:33:45 +0100 | | From | Russell King - ARM Linux <> | | Subject | Re: [PATCH 6/8] drivers: add Contiguous Memory Allocator |
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On Tue, Jul 05, 2011 at 09:41:48AM +0200, Marek Szyprowski wrote: > The Contiguous Memory Allocator is a set of helper functions for DMA > mapping framework that improves allocations of contiguous memory chunks. > > CMA grabs memory on system boot, marks it with CMA_MIGRATE_TYPE and > gives back to the system. Kernel is allowed to allocate movable pages > within CMA's managed memory so that it can be used for example for page > cache when DMA mapping do not use it. On dma_alloc_from_contiguous() > request such pages are migrated out of CMA area to free required > contiguous block and fulfill the request. This allows to allocate large > contiguous chunks of memory at any time assuming that there is enough > free memory available in the system. > > This code is heavily based on earlier works by Michal Nazarewicz.
And how are you addressing the technical concerns about aliasing of cache attributes which I keep bringing up with this and you keep ignoring and telling me that I'm standing in your way.
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