Quoting Tvrtko Ursulin (2017-07-18 15:36:16)
> +u64 intel_engine_get_current_busy_ns(struct intel_engine_cs *engine)
> +{
> + unsigned long flags;
> + u64 total;
> +
> + spin_lock_irqsave(&engine->stats.lock, flags);
> +
> + total = engine->stats.total;
> +
> + /*
> + * If the engine is executing something at the moment
> + * add it to the total.
> + */
> + if (engine->stats.ref)
> + total += ktime_get_real_ns() - engine->stats.start;
> +
> + spin_unlock_irqrestore(&engine->stats.lock, flags);
Answers to another patch found here. I would say this is the other half
of the interface and should be kept together.
-Chris
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