bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-18 06:44:00 -04:00
Code Issues Packages Projects Releases Wiki Activity

dma-contiguous: support per-numa CMA for all architectures

Browse Source 
In the commit b7176c261c ("dma-contiguous: provide the ability to
reserve per-numa CMA"), Barry adds DMA_PERNUMA_CMA for ARM64.

But this feature is architecture independent, so support per-numa CMA
for all architectures, and enable it by default if NUMA.

Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Tested-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Yajun Deng
2023-05-12 17:42:10 +08:00
committed by Christoph Hellwig
parent 3d6f126b15
commit 22e4a348f8
5 changed files with 11 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
kernel/dma/Kconfig
View File

@@ -147,10 +147,10 @@ if DMA_CMA
config DMA_PERNUMA_CMA
bool "Enable separate DMA Contiguous Memory Area for each NUMA Node"
default NUMA && ARM64
default NUMA
help
Enable this option to get pernuma CMA areas so that devices like
ARM64 SMMU can get local memory by DMA coherent APIs.
Enable this option to get pernuma CMA areas so that NUMA devices
can get local memory by DMA coherent APIs.
You can set the size of pernuma CMA by specifying "cma_pernuma=size"
on the kernel's command line.