Re: [PATCH] drm/i915/selftests: Fail hangcheck testing if the GPU is wedged

[Rodrigo Vivi <rodrigo.vivi@intel.com>]

On Thu, Jul 05, 2018 at 04:02:14PM +0100, Chris Wilson wrote:
> If the GPU is irrecoverably wedged on startup, it means that it failed
> on initialisation and we have already tried to reset it but failed. We
> can ignore all further testing, as it is already dead. Failing early,
> prevents us from slowly failing in our endeavours later and timing out.
> 
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> ---
>  drivers/gpu/drm/i915/selftests/intel_hangcheck.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
> index fe7d3190ebfe..fca073c96c2d 100644
> --- a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
> +++ b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
> @@ -1243,6 +1243,9 @@ int intel_hangcheck_live_selftests(struct drm_i915_private *i915)
>  	if (!intel_has_gpu_reset(i915))
>  		return 0;
>  
> +	if (i915_terminally_wedged(&i915->gpu_error))
> +		return -EIO; /* we're long past hope of a successful reset */
> +

Maybe -ENOTRECOVERABLE ?

Anyways

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>


>  	intel_runtime_pm_get(i915);
>  	saved_hangcheck = fetch_and_zero(&i915_modparams.enable_hangcheck);
>  
> -- 
> 2.18.0
> 
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