[Intel-gfx] [PATCH 1/5] drm/i915/selftests: Skip unstable timing measurements

[Andi Shyti]

Hi Chris,

> diff --git a/drivers/gpu/drm/i915/selftests/intel_memory_region.c b/drivers/gpu/drm/i915/selftests/intel_memory_region.c
> index 75839db63bea..59c58a276677 100644
> --- a/drivers/gpu/drm/i915/selftests/intel_memory_region.c
> +++ b/drivers/gpu/drm/i915/selftests/intel_memory_region.c
> @@ -852,6 +852,9 @@ static int _perf_memcpy(struct intel_memory_region *src_mr,
>  		}
>  
>  		sort(t, ARRAY_SIZE(t), sizeof(*t), wrap_ktime_compare, NULL);
> +		if (!t[0])
> +			continue;
> +

are you assuming here that if t[0] is '0', also the rest of 't'
is '0'?

Andi

>  		pr_info("%s src(%s, %s) -> dst(%s, %s) %14s %4llu KiB copy: %5lld MiB/s\n",
>  			__func__,
>  			src_mr->name,