| Message ID | 20210727070517.443167-5-senozhatsky@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | videobuf2: support new noncontiguous DMA API | expand |
On 27/07/2021 09:05, Sergey Senozhatsky wrote: > This moves cache hints handling from videobuf2 core down from -> from the > to allocators level, because allocators do the sync/flush to allocators -> to the allocator's > 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. Regards, Hans > > Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> > --- > drivers/media/common/videobuf2/videobuf2-core.c | 6 ------ > drivers/media/common/videobuf2/videobuf2-dma-contig.c | 6 ++++++ > drivers/media/common/videobuf2/videobuf2-dma-sg.c | 6 ++++++ > 3 files changed, 12 insertions(+), 6 deletions(-) > > diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c > index 76210c006958..55af63d54f23 100644 > --- a/drivers/media/common/videobuf2/videobuf2-core.c > +++ b/drivers/media/common/videobuf2/videobuf2-core.c > @@ -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); > } > diff --git a/drivers/media/common/videobuf2/videobuf2-dma-contig.c b/drivers/media/common/videobuf2/videobuf2-dma-contig.c > index 019c3843dc6d..1e218bc440c6 100644 > --- a/drivers/media/common/videobuf2/videobuf2-dma-contig.c > +++ b/drivers/media/common/videobuf2/videobuf2-dma-contig.c > @@ -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; > > diff --git a/drivers/media/common/videobuf2/videobuf2-dma-sg.c b/drivers/media/common/videobuf2/videobuf2-dma-sg.c > index 50265080cfc8..33ee63a99139 100644 > --- a/drivers/media/common/videobuf2/videobuf2-dma-sg.c > +++ b/drivers/media/common/videobuf2/videobuf2-dma-sg.c > @@ -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); > } > >
On (21/08/03 10:11), Hans Verkuil wrote: > On 27/07/2021 09:05, Sergey Senozhatsky wrote: > > This moves cache hints handling from videobuf2 core down > > from -> from the > > > to allocators level, because allocators do the sync/flush > > to allocators -> to the allocator's Done, thanks.
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c index 76210c006958..55af63d54f23 100644 --- a/drivers/media/common/videobuf2/videobuf2-core.c +++ b/drivers/media/common/videobuf2/videobuf2-core.c @@ -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); } diff --git a/drivers/media/common/videobuf2/videobuf2-dma-contig.c b/drivers/media/common/videobuf2/videobuf2-dma-contig.c index 019c3843dc6d..1e218bc440c6 100644 --- a/drivers/media/common/videobuf2/videobuf2-dma-contig.c +++ b/drivers/media/common/videobuf2/videobuf2-dma-contig.c @@ -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; diff --git a/drivers/media/common/videobuf2/videobuf2-dma-sg.c b/drivers/media/common/videobuf2/videobuf2-dma-sg.c index 50265080cfc8..33ee63a99139 100644 --- a/drivers/media/common/videobuf2/videobuf2-dma-sg.c +++ b/drivers/media/common/videobuf2/videobuf2-dma-sg.c @@ -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); }
This moves cache hints handling from videobuf2 core down to allocators 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> --- drivers/media/common/videobuf2/videobuf2-core.c | 6 ------ drivers/media/common/videobuf2/videobuf2-dma-contig.c | 6 ++++++ drivers/media/common/videobuf2/videobuf2-dma-sg.c | 6 ++++++ 3 files changed, 12 insertions(+), 6 deletions(-)