arm64: mm: only initialize swiotlb when necessary

Browse source

we only initialize swiotlb when swiotlb_force is true or not all system
memory is DMA-able, this trivial optimization saves us 64MB when
swiotlb is not necessary.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

...

This commit is contained in:

Jisheng Zhang 2016-06-08 15:53:46 +08:00 • committed by Catalin Marinas

parent 83ce0efc12

commit b67a8b29df

2 changed files with 16 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

15

arch/arm64/mm/dma-mapping.c

View file

3

arch/arm64/mm/init.c

View file