From: Tvrtko Ursulin tvrtko.ursulin@intel.com
Disallow sentinel requests follow previous sentinels to make request cancellation work better when faced with a chain of requests which have all been marked as in error.
Because in cases where we end up with a stream of cancelled requests we want to turn of request coalescing so they each will get individually skipped by the execlists_schedule_in (which is called per ELSP port, not per request).
Signed-off-by: Tvrtko Ursulin tvrtko.ursulin@intel.com --- drivers/gpu/drm/i915/gt/intel_execlists_submission.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c index 4c2acb5a6c0a..4b870eca9693 100644 --- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c +++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c @@ -896,7 +896,7 @@ static bool can_merge_rq(const struct i915_request *prev, if (__i915_request_is_complete(next)) return true;
- if (unlikely((i915_request_flags(prev) ^ i915_request_flags(next)) & + if (unlikely((i915_request_flags(prev) | i915_request_flags(next)) & (BIT(I915_FENCE_FLAG_NOPREEMPT) | BIT(I915_FENCE_FLAG_SENTINEL)))) return false;