On 16/07/14 17:39, Michal Nazarewicz wrote: > On Wed, Jul 16 2014, Zubair Lutfullah Kakakhel <Zubair.Kakakhel@xxxxxxxxxx> wrote: >> Adds cma support to the mips architecture. >> >> cma uses memblock. However, mips uses bootmem. > > Does cma_early_percent_memory work correctly then? > Yes it does. All memblock functions work. And this is before bootmem is informed. >> bootmem is informed about any regions reserved by memblock > > Alternatively maybe it would make sense to create a new definition of > dma_contiguous_reserve_area that uses bootmem and choose it based on > some CONFIG_CMA_USE_BOOTMEM which would be selected by MIPS. > Telling bootmem takes only 3 lines. Adding CONFIG_CMA_USE_BOOTMEM would add more functions and maintenance overhead. And it will basically do the same thing. Reserve memory. And tell the bootmem allocator. >> dma api is modified to use cma reserved memory regions when available >> >> Tested using cma_test. cma_test is a simple driver that assigns blocks >> of memory from cma reserved sections. >> >> Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@xxxxxxxxxx> > > Acked-by: Michal Nazarewicz <mina86@xxxxxxxxxx> Thank-you ZubairLK
