drm/i915: Defer kicking the tasklet until all rescheduling is complete
Since we may kick more than engine, and may kick each one a couple of times, coalesce the tasklet execution to the end. This also ensures that we have the chance to run the tasklet immediately after priority bumping. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200331114852.11583-1-chris@chris-wilson.co.uk
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