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drm/i915: Allow a request to be cancelled

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If we preempt a request and remove it from the execution queue, we need
to undo its global seqno and restart any waiters.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170223074422.4125-11-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2017-02-23 07:44:16 +00:00
parent cced5e2f09
commit 9eb143bbec
2 changed files with 57 additions and 15 deletions
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drivers/gpu/drm/i915/intel_ringbuffer.h
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@@ -635,6 +635,7 @@ bool intel_engine_add_wait(struct intel_engine_cs *engine,
void intel_engine_remove_wait(struct intel_engine_cs *engine,
struct intel_wait *wait);
void intel_engine_enable_signaling(struct drm_i915_gem_request *request);
void intel_engine_cancel_signaling(struct drm_i915_gem_request *request);
static inline bool intel_engine_has_waiter(const struct intel_engine_cs *engine)
{