This adds a context option to use DMA_RESV_USAGE_BOOKKEEP for userspace submissions. This is a respin of [1] but rebased on top of the newly introduced drm_exec helpers. Disabling implicit sync is something we've wanted in RADV for a while for resolving some corner cases. A more immediate thing that would be solved here is avoiding a bunch of implicit sync on GPU map/unmap operations as well, which helps with stutter around sparse maps/unmaps. This has seen a significant improvement in stutter in Forza Horizon 5 and Forza Horizon 4. (As games that had significant issues in sparse binding related stutter). I've been able to pass a full Vulkan CTS run on Navi 10 with this. (Note that the drm_exec patchset has introduced new CTS failures with duplicate BOs, but we will be tracking that separately.) Userspace code for this is available at [2] and a branch for the kernel code is available at [3]. [1]: https://patchwork.freedesktop.org/series/107233/ [2]: https://gitlab.freedesktop.org/ishitatsuyuki/mesa/-/commits/single-sparse-queue-explicit-rebase [3]: https://github.com/ishitatsuyuki/linux/tree/explicit-sync-drm-misc-next Bas Nieuwenhuizen (4): drm/amdgpu: Add separate mode for syncing DMA_RESV_USAGE_BOOKKEEP. drm/amdgpu: Allow explicit sync for VM ops. drm/amdgpu: Add option to disable implicit sync for a context. drm/amdgpu: Bump amdgpu driver version. .../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 18 +++++++---- drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 30 +++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h | 1 + drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 3 +- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 11 ++++--- drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 3 +- drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c | 11 +++++-- drivers/gpu/drm/amd/amdgpu/amdgpu_sync.h | 4 +-- drivers/gpu/drm/amd/amdgpu/amdgpu_vm_cpu.c | 3 +- drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c | 3 +- include/uapi/drm/amdgpu_drm.h | 4 +++ 12 files changed, 74 insertions(+), 19 deletions(-) -- 2.41.0
