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authorChristoph Hellwig <hch@lst.de>2020-07-08 10:30:00 +0300
committerChristoph Hellwig <hch@lst.de>2020-07-19 10:29:23 +0300
commit2f9237d4f6df49b74c51cdac555b0a9979d0c237 (patch)
tree6a09811a657e87bc6b716443993bceb2775a1b8f /kernel/dma/Makefile
parentb4174173005972f8f6497883d08d87e0aba1b604 (diff)
downloadlinux-2f9237d4f6df49b74c51cdac555b0a9979d0c237.tar.xz
dma-mapping: make support for dma ops optional
Avoid the overhead of the dma ops support for tiny builds that only use the direct mapping. Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Diffstat (limited to 'kernel/dma/Makefile')
-rw-r--r--kernel/dma/Makefile3
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/dma/Makefile b/kernel/dma/Makefile
index 370f63344e9c..32c7c1942bbd 100644
--- a/kernel/dma/Makefile
+++ b/kernel/dma/Makefile
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
-obj-$(CONFIG_HAS_DMA) += mapping.o direct.o dummy.o
+obj-$(CONFIG_HAS_DMA) += mapping.o direct.o
+obj-$(CONFIG_DMA_OPS) += dummy.o
obj-$(CONFIG_DMA_CMA) += contiguous.o
obj-$(CONFIG_DMA_DECLARE_COHERENT) += coherent.o
obj-$(CONFIG_DMA_VIRT_OPS) += virt.o