Commits
Chris Wilson committed 2d453c7895c
drm/i915: Assert that the request is on the execution queue before being removed We should only attempt to remove requests from the execution queue that are on the execution queue. These are the requests that have been assigned a global_seqno, so we can assert that we only attempt to remove requests with a nonzero global_seqno. Afterwards we assert that we remove them in order, i.e. the global_seqno matches the engine's seqno, but that leaves a small loophole for an unattached request on an unused engine. We can then make the same assertion on queuing the request to the execution engine, it must have a zero global_seqno or else we are queuing the same request twice. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Michał Winiarski <michal.winiarski@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171222141959.3006-1-chris@chris-wilson.co.uk Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>