[Intel-gfx] [PATCH] drm/i915: Show guilty context name on GPU reset

[Mika Kuoppala]

Chris Wilson <chris at chris-wilson.co.uk> writes:

> We mention that we are resetting the GPU, and dump the device state for
> post mortem debugging. However, while that dump contains the active
> processes and the one flagged as causing the error, we do not always
> include that information in dmesg. Include the name of the guilty
> process in dmesg for reference.
>
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
> Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Reviewed-by: Mika Kuoppala <mika.kuoppala at linux.intel.com>

> ---
>  drivers/gpu/drm/i915/gt/intel_reset.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_reset.c b/drivers/gpu/drm/i915/gt/intel_reset.c
> index f03e000051c1..86d52383bf9d 100644
> --- a/drivers/gpu/drm/i915/gt/intel_reset.c
> +++ b/drivers/gpu/drm/i915/gt/intel_reset.c
> @@ -87,6 +87,10 @@ static bool context_mark_guilty(struct i915_gem_context *ctx)
>  	if (!i915_gem_context_is_bannable(ctx))
>  		return false;
>  
> +	dev_notice(ctx->i915->drm.dev,
> +		   "%s context reset due to GPU hang\n",
> +		   ctx->name);
> +
>  	/* Record the timestamp for the last N hangs */
>  	prev_hang = ctx->hang_timestamp[0];
>  	for (i = 0; i < ARRAY_SIZE(ctx->hang_timestamp) - 1; i++)
> -- 
> 2.24.0