A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 03:01:39 -04:00
Code Issues Projects Releases Packages Wiki Activity

Merge branch 'pm-cpufreq'

Browse source 
* pm-cpufreq:
  cpufreq: Make cpufreq_generic_init() return void
  cpufreq: imx-cpufreq-dt: Add i.MX8MN support
  cpufreq: Add QoS requests for userspace constraints
  cpufreq: intel_pstate: Reuse refresh_frequency_limits()
  cpufreq: Register notifiers with the PM QoS framework
  PM / QoS: Add support for MIN/MAX frequency constraints
  PM / QOS: Pass request type to dev_pm_qos_read_value()
  PM / QOS: Rename __dev_pm_qos_read_value() and dev_pm_qos_raw_read_value()
  PM / QOS: Pass request type to dev_pm_qos_{add|remove}_notifier()
This commit is contained in:
Rafael J. Wysocki 2019-07-18 09:49:30 +02:00
commit 918e162e6a
29 changed files with 378 additions and 184 deletions
Download patch file Download diff file Expand all files Collapse all files

8
drivers/base/power/domain.c
View file

@ -1536,7 +1536,8 @@ static int genpd_add_device(struct generic_pm_domain *genpd, struct device *dev,
if (ret)
genpd_free_dev_data(dev, gpd_data);
else
dev_pm_qos_add_notifier(dev, &gpd_data->nb);
dev_pm_qos_add_notifier(dev, &gpd_data->nb,
DEV_PM_QOS_RESUME_LATENCY);
return ret;
}
@ -1569,7 +1570,8 @@ static int genpd_remove_device(struct generic_pm_domain *genpd,
pdd = dev->power.subsys_data->domain_data;
gpd_data = to_gpd_data(pdd);
dev_pm_qos_remove_notifier(dev, &gpd_data->nb);
dev_pm_qos_remove_notifier(dev, &gpd_data->nb,
DEV_PM_QOS_RESUME_LATENCY);
genpd_lock(genpd);
@ -1597,7 +1599,7 @@ static int genpd_remove_device(struct generic_pm_domain *genpd,
out:
genpd_unlock(genpd);
dev_pm_qos_add_notifier(dev, &gpd_data->nb);
dev_pm_qos_add_notifier(dev, &gpd_data->nb, DEV_PM_QOS_RESUME_LATENCY);
return ret;
}

4
drivers/base/power/domain_governor.c
View file

@ -33,7 +33,7 @@ static int dev_update_qos_constraint(struct device *dev, void *data)
* take its current PM QoS constraint (that's the only thing
* known at this point anyway).
*/
constraint_ns = dev_pm_qos_read_value(dev);
constraint_ns = dev_pm_qos_read_value(dev, DEV_PM_QOS_RESUME_LATENCY);
constraint_ns *= NSEC_PER_USEC;
}
@ -66,7 +66,7 @@ static bool default_suspend_ok(struct device *dev)
td->constraint_changed = false;
td->cached_suspend_ok = false;
td->effective_constraint_ns = 0;
constraint_ns = __dev_pm_qos_read_value(dev);
constraint_ns = __dev_pm_qos_resume_latency(dev);
spin_unlock_irqrestore(&dev->power.lock, flags);

135
drivers/base/power/qos.c
View file

@ -90,29 +90,49 @@ enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev, s32 mask)
EXPORT_SYMBOL_GPL(dev_pm_qos_flags);
/**
* __dev_pm_qos_read_value - Get PM QoS constraint for a given device.
* __dev_pm_qos_resume_latency - Get resume latency constraint for a given device.
* @dev: Device to get the PM QoS constraint value for.
*
* This routine must be called with dev->power.lock held.
*/
s32 __dev_pm_qos_read_value(struct device *dev)
s32 __dev_pm_qos_resume_latency(struct device *dev)
{
lockdep_assert_held(&dev->power.lock);
return dev_pm_qos_raw_read_value(dev);
return dev_pm_qos_raw_resume_latency(dev);
}
/**
* dev_pm_qos_read_value - Get PM QoS constraint for a given device (locked).
* @dev: Device to get the PM QoS constraint value for.
* @type: QoS request type.
*/
s32 dev_pm_qos_read_value(struct device *dev)
s32 dev_pm_qos_read_value(struct device *dev, enum dev_pm_qos_req_type type)
{
struct dev_pm_qos *qos = dev->power.qos;
unsigned long flags;
s32 ret;
spin_lock_irqsave(&dev->power.lock, flags);
ret = __dev_pm_qos_read_value(dev);
switch (type) {
case DEV_PM_QOS_RESUME_LATENCY:
ret = IS_ERR_OR_NULL(qos) ? PM_QOS_RESUME_LATENCY_NO_CONSTRAINT
: pm_qos_read_value(&qos->resume_latency);
break;
case DEV_PM_QOS_MIN_FREQUENCY:
ret = IS_ERR_OR_NULL(qos) ? PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE
: pm_qos_read_value(&qos->min_frequency);
break;
case DEV_PM_QOS_MAX_FREQUENCY:
ret = IS_ERR_OR_NULL(qos) ? PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE
: pm_qos_read_value(&qos->max_frequency);
break;
default:
WARN_ON(1);
ret = 0;
}
spin_unlock_irqrestore(&dev->power.lock, flags);
return ret;
@ -149,6 +169,14 @@ static int apply_constraint(struct dev_pm_qos_request *req,
req->dev->power.set_latency_tolerance(req->dev, value);
}
break;
case DEV_PM_QOS_MIN_FREQUENCY:
ret = pm_qos_update_target(&qos->min_frequency,
&req->data.pnode, action, value);
break;
case DEV_PM_QOS_MAX_FREQUENCY:
ret = pm_qos_update_target(&qos->max_frequency,
&req->data.pnode, action, value);
break;
case DEV_PM_QOS_FLAGS:
ret = pm_qos_update_flags(&qos->flags, &req->data.flr,
action, value);
@ -177,12 +205,11 @@ static int dev_pm_qos_constraints_allocate(struct device *dev)
if (!qos)
return -ENOMEM;
n = kzalloc(sizeof(*n), GFP_KERNEL);
n = kzalloc(3 * sizeof(*n), GFP_KERNEL);
if (!n) {
kfree(qos);
return -ENOMEM;
}
BLOCKING_INIT_NOTIFIER_HEAD(n);
c = &qos->resume_latency;
plist_head_init(&c->list);
@ -191,6 +218,7 @@ static int dev_pm_qos_constraints_allocate(struct device *dev)
c->no_constraint_value = PM_QOS_RESUME_LATENCY_NO_CONSTRAINT;
c->type = PM_QOS_MIN;
c->notifiers = n;
BLOCKING_INIT_NOTIFIER_HEAD(n);
c = &qos->latency_tolerance;
plist_head_init(&c->list);
@ -199,6 +227,24 @@ static int dev_pm_qos_constraints_allocate(struct device *dev)
c->no_constraint_value = PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT;
c->type = PM_QOS_MIN;
c = &qos->min_frequency;
plist_head_init(&c->list);
c->target_value = PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE;
c->default_value = PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE;
c->no_constraint_value = PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE;
c->type = PM_QOS_MAX;
c->notifiers = ++n;
BLOCKING_INIT_NOTIFIER_HEAD(n);
c = &qos->max_frequency;
plist_head_init(&c->list);
c->target_value = PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE;
c->default_value = PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE;
c->no_constraint_value = PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE;
c->type = PM_QOS_MIN;
c->notifiers = ++n;
BLOCKING_INIT_NOTIFIER_HEAD(n);
INIT_LIST_HEAD(&qos->flags.list);
spin_lock_irq(&dev->power.lock);
@ -252,11 +298,25 @@ void dev_pm_qos_constraints_destroy(struct device *dev)
apply_constraint(req, PM_QOS_REMOVE_REQ, PM_QOS_DEFAULT_VALUE);
memset(req, 0, sizeof(*req));
}
c = &qos->latency_tolerance;
plist_for_each_entry_safe(req, tmp, &c->list, data.pnode) {
apply_constraint(req, PM_QOS_REMOVE_REQ, PM_QOS_DEFAULT_VALUE);
memset(req, 0, sizeof(*req));
}
c = &qos->min_frequency;
plist_for_each_entry_safe(req, tmp, &c->list, data.pnode) {
apply_constraint(req, PM_QOS_REMOVE_REQ, PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE);
memset(req, 0, sizeof(*req));
}
c = &qos->max_frequency;
plist_for_each_entry_safe(req, tmp, &c->list, data.pnode) {
apply_constraint(req, PM_QOS_REMOVE_REQ, PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE);
memset(req, 0, sizeof(*req));
}
f = &qos->flags;
list_for_each_entry_safe(req, tmp, &f->list, data.flr.node) {
apply_constraint(req, PM_QOS_REMOVE_REQ, PM_QOS_DEFAULT_VALUE);
@ -368,6 +428,8 @@ static int __dev_pm_qos_update_request(struct dev_pm_qos_request *req,
switch(req->type) {
case DEV_PM_QOS_RESUME_LATENCY:
case DEV_PM_QOS_LATENCY_TOLERANCE:
case DEV_PM_QOS_MIN_FREQUENCY:
case DEV_PM_QOS_MAX_FREQUENCY:
curr_value = req->data.pnode.prio;
break;
case DEV_PM_QOS_FLAGS:
@ -467,6 +529,7 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_remove_request);
*
* @dev: target device for the constraint
* @notifier: notifier block managed by caller.
* @type: request type.
*
* Will register the notifier into a notification chain that gets called
* upon changes to the target value for the device.
@ -474,7 +537,8 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_remove_request);
* If the device's constraints object doesn't exist when this routine is called,
* it will be created (or error code will be returned if that fails).
*/
int dev_pm_qos_add_notifier(struct device *dev, struct notifier_block *notifier)
int dev_pm_qos_add_notifier(struct device *dev, struct notifier_block *notifier,
enum dev_pm_qos_req_type type)
{
int ret = 0;
@ -485,10 +549,28 @@ int dev_pm_qos_add_notifier(struct device *dev, struct notifier_block *notifier)
else if (!dev->power.qos)
ret = dev_pm_qos_constraints_allocate(dev);
if (!ret)
if (ret)
goto unlock;
switch (type) {
case DEV_PM_QOS_RESUME_LATENCY:
ret = blocking_notifier_chain_register(dev->power.qos->resume_latency.notifiers,
notifier);
break;
case DEV_PM_QOS_MIN_FREQUENCY:
ret = blocking_notifier_chain_register(dev->power.qos->min_frequency.notifiers,
notifier);
break;
case DEV_PM_QOS_MAX_FREQUENCY:
ret = blocking_notifier_chain_register(dev->power.qos->max_frequency.notifiers,
notifier);
break;
default:
WARN_ON(1);
ret = -EINVAL;
}
unlock:
mutex_unlock(&dev_pm_qos_mtx);
return ret;
}
@ -500,24 +582,44 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_add_notifier);
*
* @dev: target device for the constraint
* @notifier: notifier block to be removed.
* @type: request type.
*
* Will remove the notifier from the notification chain that gets called
* upon changes to the target value.
*/
int dev_pm_qos_remove_notifier(struct device *dev,
struct notifier_block *notifier)
struct notifier_block *notifier,
enum dev_pm_qos_req_type type)
{
int retval = 0;
int ret = 0;
mutex_lock(&dev_pm_qos_mtx);
/* Silently return if the constraints object is not present. */
if (!IS_ERR_OR_NULL(dev->power.qos))
retval = blocking_notifier_chain_unregister(dev->power.qos->resume_latency.notifiers,
notifier);
if (IS_ERR_OR_NULL(dev->power.qos))
goto unlock;
switch (type) {
case DEV_PM_QOS_RESUME_LATENCY:
ret = blocking_notifier_chain_unregister(dev->power.qos->resume_latency.notifiers,
notifier);
break;
case DEV_PM_QOS_MIN_FREQUENCY:
ret = blocking_notifier_chain_unregister(dev->power.qos->min_frequency.notifiers,
notifier);
break;
case DEV_PM_QOS_MAX_FREQUENCY:
ret = blocking_notifier_chain_unregister(dev->power.qos->max_frequency.notifiers,
notifier);
break;
default:
WARN_ON(1);
ret = -EINVAL;
}
unlock:
mutex_unlock(&dev_pm_qos_mtx);
return retval;
return ret;
}
EXPORT_SYMBOL_GPL(dev_pm_qos_remove_notifier);
@ -577,6 +679,9 @@ static void __dev_pm_qos_drop_user_request(struct device *dev,
req = dev->power.qos->flags_req;
dev->power.qos->flags_req = NULL;
break;
default:
WARN_ON(1);
return;
}
__dev_pm_qos_remove_request(req);
kfree(req);

2
drivers/base/power/runtime.c
View file

@ -275,7 +275,7 @@ static int rpm_check_suspend_allowed(struct device *dev)
|| (dev->power.request_pending
&& dev->power.request == RPM_REQ_RESUME))
retval = -EAGAIN;
else if (__dev_pm_qos_read_value(dev) == 0)
else if (__dev_pm_qos_resume_latency(dev) == 0)
retval = -EPERM;
else if (dev->power.runtime_status == RPM_SUSPENDED)
retval = 1;