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media: videobuf2: move cache_hints handling to allocators

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This moves cache hints handling from the videobuf2 core down
to the allocator's level, because allocators do the sync/flush
caches eventually and may take better decisions. Besides,
allocators already decide whether cache sync/flush should
be done or can be skipped. This patch moves the scattered
buffer cache sync logic to one common place.

Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Sergey Senozhatsky 2021-09-09 13:24:26 +02:00 committed by Mauro Carvalho Chehab
parent 0a12d652fc
commit cde513fd9b
3 changed files with 12 additions and 6 deletions
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6
drivers/media/common/videobuf2/videobuf2-core.c
View file

@ -328,9 +328,6 @@ static void __vb2_buf_mem_prepare(struct vb2_buffer *vb)
return;
vb->synced = 1;
if (vb->skip_cache_sync_on_prepare)
return;
for (plane = 0; plane < vb->num_planes; ++plane)
call_void_memop(vb, prepare, vb->planes[plane].mem_priv);
}
@ -347,9 +344,6 @@ static void __vb2_buf_mem_finish(struct vb2_buffer *vb)
return;
vb->synced = 0;
if (vb->skip_cache_sync_on_finish)
return;
for (plane = 0; plane < vb->num_planes; ++plane)
call_void_memop(vb, finish, vb->planes[plane].mem_priv);
}

6
drivers/media/common/videobuf2/videobuf2-dma-contig.c
View file

@ -101,6 +101,9 @@ static void vb2_dc_prepare(void *buf_priv)
struct vb2_dc_buf *buf = buf_priv;
struct sg_table *sgt = buf->dma_sgt;
if (buf->vb->skip_cache_sync_on_prepare)
return;
if (!sgt)
return;
@ -112,6 +115,9 @@ static void vb2_dc_finish(void *buf_priv)
struct vb2_dc_buf *buf = buf_priv;
struct sg_table *sgt = buf->dma_sgt;
if (buf->vb->skip_cache_sync_on_finish)
return;
if (!sgt)
return;

6
drivers/media/common/videobuf2/videobuf2-dma-sg.c
View file

@ -204,6 +204,9 @@ static void vb2_dma_sg_prepare(void *buf_priv)
struct vb2_dma_sg_buf *buf = buf_priv;
struct sg_table *sgt = buf->dma_sgt;
if (buf->vb->skip_cache_sync_on_prepare)
return;
dma_sync_sgtable_for_device(buf->dev, sgt, buf->dma_dir);
}
@ -212,6 +215,9 @@ static void vb2_dma_sg_finish(void *buf_priv)
struct vb2_dma_sg_buf *buf = buf_priv;
struct sg_table *sgt = buf->dma_sgt;
if (buf->vb->skip_cache_sync_on_finish)
return;
dma_sync_sgtable_for_cpu(buf->dev, sgt, buf->dma_dir);
}