summaryrefslogtreecommitdiff
path: root/kernel/dma/Kconfig
diff options
context:
space:
mode:
authorDavid Rientjes <rientjes@google.com>2020-04-14 17:04:52 -0700
committerChristoph Hellwig <hch@lst.de>2020-04-20 12:08:45 +0200
commite860c299ac0d738b44ff91693f11e63080a29698 (patch)
tree83a12cd22838d82b62b71575c7ea6777750137cb /kernel/dma/Kconfig
parent05f099a7d0a73114c6eb3e6a359ea97563b47031 (diff)
dma-remap: separate DMA atomic pools from direct remap code
DMA atomic pools will be needed beyond only CONFIG_DMA_DIRECT_REMAP so separate them out into their own file. This also adds a new Kconfig option that can be subsequently used for options, such as CONFIG_AMD_MEM_ENCRYPT, that will utilize the coherent pools but do not have a dependency on direct remapping. For this patch alone, there is no functional change introduced. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David Rientjes <rientjes@google.com> [hch: fixup copyrights and remove unused includes] Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'kernel/dma/Kconfig')
-rw-r--r--kernel/dma/Kconfig6
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig
index 4c103a24e380..d006668c0027 100644
--- a/kernel/dma/Kconfig
+++ b/kernel/dma/Kconfig
@@ -79,10 +79,14 @@ config DMA_REMAP
select DMA_NONCOHERENT_MMAP
bool
-config DMA_DIRECT_REMAP
+config DMA_COHERENT_POOL
bool
select DMA_REMAP
+config DMA_DIRECT_REMAP
+ bool
+ select DMA_COHERENT_POOL
+
config DMA_CMA
bool "DMA Contiguous Memory Allocator"
depends on HAVE_DMA_CONTIGUOUS && CMA