[Intel-gfx] [PATCH 2/5] drm/i915/gt: Restore ce->signal flush before releasing virtual engine

[Andi Shyti]

Hi Chris,

> +void intel_context_remove_breadcrumbs(struct intel_context *ce,
> +				      struct intel_breadcrumbs *b)
> +{
> +	struct i915_request *rq, *rn;
> +	bool release = false;
> +	unsigned long flags;
> +
> +	spin_lock_irqsave(&ce->signal_lock, flags);
> +
> +	if (list_empty(&ce->signals))
> +		goto unlock;

does "list_empty" need to be under lock or you've been lazy?

The rest looks fine,
Andi

> +	list_for_each_entry_safe(rq, rn, &ce->signals, signal_link) {
> +		GEM_BUG_ON(!__i915_request_is_complete(rq));
> +		if (!test_and_clear_bit(I915_FENCE_FLAG_SIGNAL,
> +					&rq->fence.flags))
> +			continue;
> +
> +		list_del_rcu(&rq->signal_link);
> +		irq_signal_request(rq, b);
> +		i915_request_put(rq);
> +	}
> +	release = remove_signaling_context(b, ce);
> +
> +unlock:
> +	spin_unlock_irqrestore(&ce->signal_lock, flags);
> +	if (release)
> +		intel_context_put(ce);
> +
> +	while (atomic_read(&b->signaler_active))
> +		cpu_relax();
> +}