base/power/qos.c

54 	struct dev_pm_qos *qos = dev->power.qos;
60 	if (IS_ERR_OR_NULL(qos))
63 	pqf = &qos->flags;
112 	struct dev_pm_qos *qos = dev->power.qos;
120 		ret = IS_ERR_OR_NULL(qos) ? PM_QOS_RESUME_LATENCY_NO_CONSTRAINT
121 			: pm_qos_read_value(&qos->resume_latency);
124 		ret = IS_ERR_OR_NULL(qos) ? PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE
125 			: freq_qos_read_value(&qos->freq, FREQ_QOS_MIN);
128 		ret = IS_ERR_OR_NULL(qos) ? PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE
129 			: freq_qos_read_value(&qos->freq, FREQ_QOS_MAX);
153 	struct dev_pm_qos *qos = req->dev->power.qos;
161 		ret = pm_qos_update_target(&qos->resume_latency,
165 		ret = pm_qos_update_target(&qos->latency_tolerance,
168 			value = pm_qos_read_value(&qos->latency_tolerance);
177 		ret = pm_qos_update_flags(&qos->flags, &req->data.flr,
196 	struct dev_pm_qos *qos;
200 	qos = kzalloc(sizeof(*qos), GFP_KERNEL);
201 	if (!qos)
206 		kfree(qos);
210 	c = &qos->resume_latency;
219 	c = &qos->latency_tolerance;
226 	freq_constraints_init(&qos->freq);
228 	INIT_LIST_HEAD(&qos->flags.list);
231 	dev->power.qos = qos;
248 	struct dev_pm_qos *qos;
267 	qos = dev->power.qos;
268 	if (!qos)
272 	c = &qos->resume_latency;
282 	c = &qos->latency_tolerance;
288 	c = &qos->freq.min_freq;
295 	c = &qos->freq.max_freq;
302 	f = &qos->flags;
309 	dev->power.qos = ERR_PTR(-ENODEV);
312 	kfree(qos->resume_latency.notifiers);
313 	kfree(qos);
341 	if (IS_ERR(dev->power.qos))
343 	else if (!dev->power.qos)
353 		ret = freq_qos_add_request(&dev->power.qos->freq,
357 		ret = freq_qos_add_request(&dev->power.qos->freq,
367  * dev_pm_qos_add_request - inserts new qos request into the list
371  * @value: defines the qos request
374  * requested qos performance characteristics. It recomputes the aggregate
418 	if (IS_ERR_OR_NULL(req->dev->power.qos))
446  * dev_pm_qos_update_request - modifies an existing qos request
448  * @new_value: defines the qos request
450  * Updates an existing dev PM qos request along with updating the
485 	if (IS_ERR_OR_NULL(req->dev->power.qos))
496  * dev_pm_qos_remove_request - modifies an existing qos request
499  * Will remove pm qos request from the list of constraints and
542 	if (IS_ERR(dev->power.qos))
544 	else if (!dev->power.qos)
552 		ret = blocking_notifier_chain_register(dev->power.qos->resume_latency.notifiers,
556 		ret = freq_qos_add_notifier(&dev->power.qos->freq,
560 		ret = freq_qos_add_notifier(&dev->power.qos->freq,
594 	if (IS_ERR_OR_NULL(dev->power.qos))
599 		ret = blocking_notifier_chain_unregister(dev->power.qos->resume_latency.notifiers,
603 		ret = freq_qos_remove_notifier(&dev->power.qos->freq,
607 		ret = freq_qos_remove_notifier(&dev->power.qos->freq,
666 		req = dev->power.qos->resume_latency_req;
667 		dev->power.qos->resume_latency_req = NULL;
670 		req = dev->power.qos->latency_tolerance_req;
671 		dev->power.qos->latency_tolerance_req = NULL;
674 		req = dev->power.qos->flags_req;
675 		dev->power.qos->flags_req = NULL;
720 	if (IS_ERR_OR_NULL(dev->power.qos))
722 	else if (dev->power.qos->resume_latency_req)
731 	dev->power.qos->resume_latency_req = req;
747 	if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->resume_latency_req)
797 	if (IS_ERR_OR_NULL(dev->power.qos))
799 	else if (dev->power.qos->flags_req)
808 	dev->power.qos->flags_req = req;
825 	if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->flags_req)
863 	if (IS_ERR_OR_NULL(dev->power.qos) || !dev->power.qos->flags_req) {
874 	ret = __dev_pm_qos_update_request(dev->power.qos->flags_req, value);
891 	ret = IS_ERR_OR_NULL(dev->power.qos)
892 		|| !dev->power.qos->latency_tolerance_req ?
894 			dev->power.qos->latency_tolerance_req->data.pnode.prio;
910 	if (IS_ERR_OR_NULL(dev->power.qos)
911 	    || !dev->power.qos->latency_tolerance_req) {
931 		dev->power.qos->latency_tolerance_req = req;
937 			ret = __dev_pm_qos_update_request(dev->power.qos->latency_tolerance_req, val);