Commit 3e50b1d6 authored by Arvind Yadav's avatar Arvind Yadav Committed by Alex Deucher
Browse files

drm/amdgpu: only keep most recent fence for each context 



Keep only the latest fences to reduce the number of values
given back to userspace

v2: - Export this code from dma-fence-unwrap.c(by Christian).
v3: - To split this in a dma_buf patch and amd userq patch(by Sunil).
    - No need to add a new function just re-use existing(by Christian).
v4: Export dma_fence_dedub_array function and used it(by Christian).

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Reviewed-by: default avatarSunil Khatri <sunil.khatri@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarArvind Yadav <Arvind.Yadav@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 68071eb0

drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c

+6 −0
Original line number Diff line number Diff line
@@ -852,6 +852,12 @@ int amdgpu_userq_wait_ioctl(struct drm_device *dev, void *data, 
			fences[num_fences++] = fence;

		}



		/*

		 * Keep only the latest fences to reduce the number of values

		 * given back to userspace.

		 */

		num_fences = dma_fence_dedup_array(fences, num_fences);



		waitq = idr_find(&userq_mgr->userq_idr, wait_info->waitq_id);

		if (!waitq)

			goto free_fences;