Peter Zijlstra <peterz@infradead.org> writes:

> 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?

Dropped.  It sneaked in while copy-pasting cpu_latency_qos_apply(), but
it's not necessary for our use-case.