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Subject: media: mediatek: vcodec: Alloc DMA memory with
DMA_ATTR_ALLOC_SINGLE_PAGES
Author: Douglas Anderson <diand...@chromium.org>
Date: Mon Apr 22 10:03:59 2024 -0700
As talked about in commit 14d3ae2efeed ("ARM: 8507/1: dma-mapping: Use
DMA_ATTR_ALLOC_SINGLE_PAGES hint to optimize alloc"), it doesn't
really make sense to try to allocate contiguous chunks of memory for
video encoding/decoding. Let's switch the Mediatek vcodec driver to
pass DMA_ATTR_ALLOC_SINGLE_PAGES and take some of the stress off the
memory subsystem.
Signed-off-by: Douglas Anderson <diand...@chromium.org>
Tested-by: Fei Shao <fs...@chromium.org>
Reviewed-by: Fei Shao <fs...@chromium.org>
Reviewed-by: Nicolas Dufresne <nicolas.dufre...@collabora.com>
Signed-off-by: Sebastian Fricke <sebastian.fri...@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.c
b/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.c
index c60e4c193b25..fc4e34c29192 100644
--- a/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.c
+++ b/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.c
@@ -63,7 +63,8 @@ int mtk_vcodec_mem_alloc(void *priv, struct mtk_vcodec_mem
*mem)
id = dec_ctx->id;
}
- mem->va = dma_alloc_coherent(&plat_dev->dev, mem->size, &mem->dma_addr,
GFP_KERNEL);
+ mem->va = dma_alloc_attrs(&plat_dev->dev, mem->size, &mem->dma_addr,
+ GFP_KERNEL, DMA_ATTR_ALLOC_SINGLE_PAGES);
if (!mem->va) {
mtk_v4l2_err(plat_dev, "%s dma_alloc size=0x%zx failed!",
__func__, mem->size);
