kernel/linux.git/include/linux/dma-resv.h, branch v6.19.11

drm/scheduler: Improve documentation

2024-09-24T10:02:37+00:00

Function drm_sched_entity_push_job() doesn't have a return value, remove the return value description for it. Correct several other typo errors. v2 (Philipp): - more correction with related comments. Signed-off-by: Shuicheng Lin Reviewed-by: Philipp Stanner Signed-off-by: Simona Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20240917144732.2758572-1-shuicheng.lin@intel.com

dma-buf/dma-resv: Add a way to set fence deadline

2023-03-28T20:39:02+00:00

Add a way to set a deadline on remaining resv fences according to the requested usage. Signed-off-by: Rob Clark Reviewed-by: Christian König

dma-buf/dma_resv_usage: update explicit sync documentation

2022-07-18T19:20:57+00:00

Make it clear that DMA_RESV_USAGE_BOOKKEEP can be used for explicit synced user space submissions as well and document the rules around adding the same fence with different usages. Signed-off-by: Christian König Reviewed-by: Bas Nieuwenhuizen Acked-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20220712131201.131475-1-christian.koenig@amd.com

dma-buf: drop seq count based update

2022-04-07T10:53:54+00:00

This should be possible now since we don't have the distinction between exclusive and shared fences any more. The only possible pitfall is that a dma_fence would be reused during the RCU grace period, but even that could be handled with a single extra check. Signed-off-by: Christian König Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20220407085946.744568-15-christian.koenig@amd.com

dma-buf: add DMA_RESV_USAGE_BOOKKEEP v3

2022-04-07T10:53:54+00:00

Add an usage for submissions independent of implicit sync but still interesting for memory management. v2: cleanup the kerneldoc a bit v3: separate amdgpu changes from this Signed-off-by: Christian König Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20220407085946.744568-10-christian.koenig@amd.com

dma-buf: add DMA_RESV_USAGE_KERNEL v3

2022-04-07T10:53:54+00:00

Add an usage for kernel submissions. Waiting for those are mandatory for dynamic DMA-bufs. As a precaution this patch also changes all occurrences where fences are added as part of memory management in TTM, VMWGFX and i915 to use the new value because it now becomes possible for drivers to ignore fences with the WRITE usage. v2: use "must" in documentation, fix whitespaces v3: separate out some driver changes and better document why some changes should still be part of this patch. Signed-off-by: Christian König Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20220407085946.744568-5-christian.koenig@amd.com

dma-buf & drm/amdgpu: remove dma_resv workaround

2022-04-07T10:53:53+00:00

Rework the internals of the dma_resv object to allow adding more than one write fence and remember for each fence what purpose it had. This allows removing the workaround from amdgpu which used a container for this instead. Signed-off-by: Christian König Reviewed-by: Daniel Vetter Cc: amd-gfx@lists.freedesktop.org Link: https://patchwork.freedesktop.org/patch/msgid/20220407085946.744568-4-christian.koenig@amd.com

dma-buf: specify usage while adding fences to dma_resv obj v7

2022-04-07T10:53:53+00:00

Instead of distingting between shared and exclusive fences specify the fence usage while adding fences. Rework all drivers to use this interface instead and deprecate the old one. v2: some kerneldoc comments suggested by Daniel v3: fix a missing case in radeon v4: rebase on nouveau changes, fix lockdep and temporary disable warning v5: more documentation updates v6: separate internal dma_resv changes from this patch, avoids to disable warning temporary, rebase on upstream changes v7: fix missed case in lima driver, minimize changes to i915_gem_busy_ioctl Signed-off-by: Christian König Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20220407085946.744568-3-christian.koenig@amd.com

dma-buf: add enum dma_resv_usage v4

2022-04-07T10:53:53+00:00

This change adds the dma_resv_usage enum and allows us to specify why a dma_resv object is queried for its containing fences. Additional to that a dma_resv_usage_rw() helper function is added to aid retrieving the fences for a read or write userspace submission. This is then deployed to the different query functions of the dma_resv object and all of their users. When the write paratermer was previously true we now use DMA_RESV_USAGE_WRITE and DMA_RESV_USAGE_READ otherwise. v2: add KERNEL/OTHER in separate patch v3: some kerneldoc suggestions by Daniel v4: some more kerneldoc suggestions by Daniel, fix missing cases lost in the rebase pointed out by Bas. Signed-off-by: Christian König Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20220407085946.744568-2-christian.koenig@amd.com

dma-buf/drivers: make reserving a shared slot mandatory v4

2022-04-06T15:38:25+00:00

Audit all the users of dma_resv_add_excl_fence() and make sure they reserve a shared slot also when only trying to add an exclusive fence. This is the next step towards handling the exclusive fence like a shared one. v2: fix missed case in amdgpu v3: and two more radeon, rename function v4: add one more case to TTM, fix i915 after rebase Signed-off-by: Christian König Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20220406075132.3263-2-christian.koenig@amd.com