[Intel-gfx] [PATCH 02/33] drm/i915/gt: Move the heartbeat into the highprio system wq

[Mika Kuoppala]

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

> As we ensure that the heartbeat is reasonably fast (and should not
> block), move the heartbeat work into the system_highprio_wq to avoid
> having this essential task be blocked behind other slow work, such as
> our own retire_work_handler.
>
> References: https://gitlab.freedesktop.org/drm/intel/-/issues/2119
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

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

> ---
>  drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c b/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c
> index 1663ab5c68a5..3699fa8a79e8 100644
> --- a/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c
> +++ b/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c
> @@ -32,7 +32,7 @@ static bool next_heartbeat(struct intel_engine_cs *engine)
>  	delay = msecs_to_jiffies_timeout(delay);
>  	if (delay >= HZ)
>  		delay = round_jiffies_up_relative(delay);
> -	mod_delayed_work(system_wq, &engine->heartbeat.work, delay);
> +	mod_delayed_work(system_highpri_wq, &engine->heartbeat.work, delay);
>  
>  	return true;
>  }
> -- 
> 2.20.1
>
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