dma-buf: make fence sequence numbers 64 bit v2

Browse source

For a lot of use cases we need 64bit sequence numbers. Currently drivers
overload the dma_fence structure to store the additional bits.

Stop doing that and make the sequence number in the dma_fence always
64bit.

For compatibility with hardware which can do only 32bit sequences the
comparisons in __dma_fence_is_later only takes the lower 32bits as significant
when the upper 32bits are all zero.

v2: change the logic in __dma_fence_is_later

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Link: https://patchwork.freedesktop.org/patch/266927/

...

This commit is contained in:

Christian König 2018-11-14 16:11:06 +01:00

parent fcc4a00294

commit b312d8ca3a

8 changed files with 24 additions and 16 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

2

drivers/dma-buf/dma-fence.c

View file

2

drivers/dma-buf/sw_sync.c

View file

4

drivers/dma-buf/sync_file.c

View file

2

drivers/gpu/drm/amd/amdgpu/amdgpu_sa.c

View file

2

drivers/gpu/drm/i915/i915_sw_fence.c

View file

2

drivers/gpu/drm/i915/intel_engine_cs.c

View file

4

drivers/gpu/drm/vgem/vgem_fence.c

View file

22

include/linux/dma-fence.h

View file