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3136deb7ba
To allow faster engine to engine synchronization, peel the layer of dma-fence-chain to expose potential i915 fences so that the i915_request code can emit HW semaphore wait/signal operations in the ring which is faster than waking up the host to submit unblocked workloads after interrupt notification. This is similar to the peeling we do for e.g. dma_fence_array. Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20200508185448.29709-1-chris@chris-wilson.co.uk |
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Makefile |