[Intel-gfx] [PATCH v11 6/7] drm/i915/gt: Increase sleep in gt_tlb selftest sanitycheck

[Nirmoy Das]

On 10/11/2023 2:02 AM, Jonathan Cavitt wrote:
> For the gt_tlb live selftest, when operating on the GSC engine,
> increase the timeout from 10 ms to 200 ms because the GSC
> engine is a bit slower than the rest.
>
> Signed-off-by: Jonathan Cavitt <jonathan.cavitt at intel.com>
> Reviewed-by: Andi Shyti <andi.shyti at linux.intel.com>

Reviewed-by: Nirmoy Das <nirmoy.das at intel.com>

> ---
>   drivers/gpu/drm/i915/gt/selftest_tlb.c | 11 +++++++++--
>   1 file changed, 9 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/selftest_tlb.c b/drivers/gpu/drm/i915/gt/selftest_tlb.c
> index 7e41f69fc818f..00b872b6380b1 100644
> --- a/drivers/gpu/drm/i915/gt/selftest_tlb.c
> +++ b/drivers/gpu/drm/i915/gt/selftest_tlb.c
> @@ -136,8 +136,15 @@ pte_tlbinv(struct intel_context *ce,
>   	i915_request_get(rq);
>   	i915_request_add(rq);
>   
> -	/* Short sleep to sanitycheck the batch is spinning before we begin */
> -	msleep(10);
> +	/*
> +	 * Short sleep to sanitycheck the batch is spinning before we begin.
> +	 * FIXME: Why is GSC so slow?
> +	 */
> +	if (ce->engine->class == OTHER_CLASS)
> +		msleep(200);
> +	else
> +		msleep(10);
> +
>   	if (va == vb) {
>   		if (!i915_request_completed(rq)) {
>   			pr_err("%s(%s): Semaphore sanitycheck failed %llx, with alignment %llx, using PTE size %x (phys %x, sg %x)\n",