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64e1782aee
In gk20a_vm_map_duplicate_locked(), we always do a linear search in rb-tree to find a duplicate entry of the buffer In case NVGPU_AS_MAP_BUFFER_FLAGS_FIXED_OFFSET is set, we first traverse whole rb-tree linearly and then compare offset_align with the address searched from rb-tree If size of rb-tree is very large this linear lookup takes upto 7mS and causes huge delays Hence in case of NVGPU_AS_MAP_BUFFER_FLAGS_FIXED_OFFSET, we can use offset_align to perform a binary search on rb-tree and then verify that dmabuf and kind match with the node obtained from the search This saves a lot of time per-lookup Bug 1874516 Change-Id: Ia4924b64d66e586c14341ae2e2283beac394bf6f Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: http://git-master/r/1309343 Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>