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gpu: nvgpu: avoid using priv data for non-compressed buffer

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Instead of allocating priv data for all external buffers, allocate
only on a demand basis for when compression is requested either in CDE
or via libnvrm_gpu.

This will allow allocators like nvidia-drm to use non-compressed
buffers without needing to avoid the core drm checks.
e.g. drm_gem_prime_import_dev that checks for
if (dma_buf->ops == &drm_gem_prime_dmabuf_ops)"

This patch also gets rid of optimization of dma_buf's attach/detach
calls. Now, nvgpu instead needs to call attach/detach for everytime
the dmabuf fd is imported.

Change-Id: Idefd269b32974106e85ff09e17ebc752b92f830c
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2372213
Tested-by: Yogish Kulkarni <yogishk@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: automaticguardword <automaticguardword@nvidia.com>
Reviewed-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Debarshi Dutta
2020-07-08 13:31:13 +05:30
committed by Alex Waterman
parent 58ce9156a8
commit 08ec6e874d
6 changed files with 48 additions and 87 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/gpu/nvgpu/os/linux/dmabuf_priv.h
View File

@@ -74,11 +74,6 @@ struct gk20a_dmabuf_priv {
struct gk20a_comptag_allocator *comptag_allocator;
struct gk20a_comptags comptags;
struct dma_buf_attachment *attach;
struct sg_table *sgt;
int pin_count;
struct nvgpu_list_node states;
u64 buffer_id;
@@ -102,11 +97,11 @@ struct gk20a_dmabuf_priv {
struct nvgpu_list_node list;
};
struct sg_table *nvgpu_mm_pin_privdata(struct device *dev,
struct sg_table *nvgpu_mm_pin(struct device *dev,
struct dma_buf *dmabuf,
struct dma_buf_attachment **attachment);
void nvgpu_mm_unpin_privdata(struct device *dev,
void nvgpu_mm_unpin(struct device *dev,
struct dma_buf *dmabuf,
struct dma_buf_attachment *attachment,
struct sg_table *sgt);
@@ -118,8 +113,6 @@ int gk20a_dmabuf_alloc_drvdata(struct dma_buf *dmabuf, struct device *dev);
int gk20a_dmabuf_get_state(struct dma_buf *dmabuf, struct gk20a *g,
u64 offset, struct gk20a_buffer_state **state);
int gk20a_dma_buf_set_drvdata(struct dma_buf *dmabuf, struct device *device,
struct gk20a_dmabuf_priv *priv);
void gk20a_dma_buf_priv_list_clear(struct nvgpu_os_linux *l);
struct gk20a_dmabuf_priv *gk20a_dma_buf_get_drvdata(
struct dma_buf *dmabuf, struct device *device);