drm/i915: Stop tracking timeline->inflight_seqnos
In commit 9b6586ae ("drm/i915: Keep a global seqno per-engine"), we moved from a global inflight counter to per-engine counters in the hope that will be easy to run concurrently in future. However, with the advent of the desire to move requests between engines, we do need a global counter to preserve the semantics that no engine wraps in the middle of a submit. (Although this semantic is now only required for gen7 semaphore support, which only supports greater-then comparisons!) v2: Keep a global counter of all requests ever submitted and force the reset when it wraps. References: 9b6586ae ("drm/i915: Keep a global seqno per-engine") Signed-off-by:Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180430131503.5375-1-chris@chris-wilson.co.uk
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5692251c
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