Hi,
This patch set avoids attaching and mapping a dma_buf multiple times when
several planes in one vb2 buffer share the same dma_buf.
1/4, 2/4 and 3/4 refactors __prepare_dmabuf()
4/4 adds a flag to avoid duplicated attaching
v4:
- Update patch 4/4, only set dbuf_duplicated when alloc_devs are equal.
v3:
- Add patch 1/4 to move clearing fields into __vb2_plane_dmabuf_put().
- Resolve review comments on v2. Detailed changelog in patch.
v2:
- Add patch 1/3 to refactor __prepare_dmabuf()
- Add patch 2/3 to resolve Tomasz's comment on __vb2_buf_dmabuf_put()'s
iteration order
- Fix mem_priv in patch 3/3
- Rename duplicated_dbuf to dbuf_duplicated
Yunke Cao (4):
media: videobuf2-core: clear memory related fields in
__vb2_plane_dmabuf_put()
media: videobuf2-core: release all planes first in __prepare_dmabuf()
media: videobuf2-core: reverse the iteration order in
__vb2_buf_dmabuf_put
media: videobuf2-core: attach once if multiple planes share the same
dbuf
.../media/common/videobuf2/videobuf2-core.c | 153 ++++++++++--------
include/media/videobuf2-core.h | 3 +
2 files changed, 92 insertions(+), 64 deletions(-)
--
2.45.2.627.g7a2c4fd464-goog
