Hello,
On Friday, June 10, 2011 1:25 PM Alan Cox wrote:
I am curious about one thing
Why do we need this allocator. Why not use allocate_resource and friends. The kernel generic resource handler already handles object alignment and subranges. It just seems to be a surplus allocator that could perhaps be mostly removed by using the kernel resource allocator we already have ?
genalloc was used mainly for historical reasons (in the earlier version we were looking for direct replacement for first fit allocator).
I plan to replace it with lib/bitmap.c bitmap_* based allocator (similar like it it is used by dma_declare_coherent_memory() and friends in drivers/base/dma-coherent.c). We need something really simple for CMA area management.
IMHO allocate_resource and friends a bit too heavy here, but good to know that such allocator also exists.
Best regards