Re: [PATCHv4 4/8] videobuf2: move cache_hints handling to allocators
From: Hans Verkuil <hidden>
Date: 2021-08-03 08:11:38
Also in:
lkml
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
quoted hunk ↗ jump to hunk
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); }