Michal Nazarewicz <mina86@xxxxxxxxxx> writes: > On Fri, Jun 28 2013, Aneesh Kumar K.V wrote: >> From: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx> >> >> We want to use CMA for allocating hash page table and real mode area for >> PPC64. Hence move DMA contiguous related changes into a seperate config >> so that ppc64 can enable CMA without requiring DMA contiguous. >> >> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx> > > Acked-by: Michal Nazarewicz <mina86@xxxxxxxxxx> > >> diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig >> index 07abd9d..74b7c98 100644 >> --- a/drivers/base/Kconfig >> +++ b/drivers/base/Kconfig >> @@ -202,11 +202,10 @@ config DMA_SHARED_BUFFER >> APIs extension; the file's descriptor can then be passed on to other >> driver. >> >> -config CMA >> - bool "Contiguous Memory Allocator" >> - depends on HAVE_DMA_CONTIGUOUS && HAVE_MEMBLOCK >> - select MIGRATION >> - select MEMORY_ISOLATION >> +config DMA_CMA >> + bool "DMA Contiguous Memory Allocator" >> + depends on HAVE_DMA_CONTIGUOUS >> + select CMA > > Just to be on the safe side, I'd add > > depends on HAVE_MEMBLOCK > > or change this so that it does not select CMA but depends on CMA. updated this to +config DMA_CMA + bool "DMA Contiguous Memory Allocator" + depends on HAVE_DMA_CONTIGUOUS && CMA > >> help >> This enables the Contiguous Memory Allocator which allows drivers >> to allocate big physically-contiguous blocks of memory for use with >> @@ -215,17 +214,7 @@ config CMA >> For more information see <include/linux/dma-contiguous.h>. >> If unsure, say "n". >> >> -if CMA >> - >> -config CMA_DEBUG >> - bool "CMA debug messages (DEVELOPMENT)" >> - depends on DEBUG_KERNEL >> - help >> - Turns on debug messages in CMA. This produces KERN_DEBUG >> - messages for every CMA call as well as various messages while >> - processing calls such as dma_alloc_from_contiguous(). >> - This option does not affect warning and error messages. >> - Thanks -aneesh -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>