[Intel-gfx] [PATCH 01/10] PM: QoS: Add CPU_RESPONSE_FREQUENCY global PM QoS limit.

[Peter Zijlstra]

On Tue, Mar 10, 2020 at 02:41:54PM -0700, Francisco Jerez wrote:
> +static void cpu_response_frequency_qos_apply(struct pm_qos_request *req,
> +					     enum pm_qos_req_action action,
> +					     s32 value)
> +{
> +	int ret = pm_qos_update_target(req->qos, &req->node, action, value);
> +
> +	if (ret > 0)
> +		wake_up_all_idle_cpus();
> +}

That's a pretty horrific thing to do; how often do we expect to call
this?