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PM: QoS: Drop frequency QoS types from device PM QoS
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There are no more active users of DEV_PM_QOS_MIN_FREQUENCY and
DEV_PM_QOS_MAX_FREQUENCY device PM QoS request types, so drop them
along with the code supporting them.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
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@rafaeljw
rafaeljw committed Oct 21, 2019
1 parent 3000ce3 commit 2aac8bd
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Showing 2 changed files with 2 additions and 80 deletions.
70 changes: 2 additions & 68 deletions drivers/base/power/qos.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -115,20 +115,10 @@ s32 dev_pm_qos_read_value(struct device *dev, enum dev_pm_qos_req_type type)

spin_lock_irqsave(&dev->power.lock, flags);

switch (type) {
case DEV_PM_QOS_RESUME_LATENCY:
if (type == 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:
} else {
WARN_ON(1);
ret = 0;
}
Expand Down Expand Up @@ -169,14 +159,6 @@ 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);
Expand Down Expand Up @@ -227,24 +209,6 @@ 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);
Expand Down Expand Up @@ -305,18 +269,6 @@ void dev_pm_qos_constraints_destroy(struct device *dev)
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);
Expand Down Expand Up @@ -428,8 +380,6 @@ 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:
Expand Down Expand Up @@ -557,14 +507,6 @@ int dev_pm_qos_add_notifier(struct device *dev, struct notifier_block *notifier,
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;
Expand Down Expand Up @@ -604,14 +546,6 @@ int dev_pm_qos_remove_notifier(struct device *dev,
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;
Expand Down
12 changes: 0 additions & 12 deletions include/linux/pm_qos.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -34,8 +34,6 @@ enum pm_qos_flags_status {
#define PM_QOS_RESUME_LATENCY_NO_CONSTRAINT PM_QOS_LATENCY_ANY
#define PM_QOS_RESUME_LATENCY_NO_CONSTRAINT_NS PM_QOS_LATENCY_ANY_NS
#define PM_QOS_LATENCY_TOLERANCE_DEFAULT_VALUE 0
#define PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE 0
#define PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE (-1)
#define PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT (-1)

#define PM_QOS_FLAG_NO_POWER_OFF (1 << 0)
Expand All @@ -54,8 +52,6 @@ struct pm_qos_flags_request {
enum dev_pm_qos_req_type {
DEV_PM_QOS_RESUME_LATENCY = 1,
DEV_PM_QOS_LATENCY_TOLERANCE,
DEV_PM_QOS_MIN_FREQUENCY,
DEV_PM_QOS_MAX_FREQUENCY,
DEV_PM_QOS_FLAGS,
};

Expand Down Expand Up @@ -97,14 +93,10 @@ struct pm_qos_flags {
struct dev_pm_qos {
struct pm_qos_constraints resume_latency;
struct pm_qos_constraints latency_tolerance;
struct pm_qos_constraints min_frequency;
struct pm_qos_constraints max_frequency;
struct pm_qos_flags flags;
struct dev_pm_qos_request *resume_latency_req;
struct dev_pm_qos_request *latency_tolerance_req;
struct dev_pm_qos_request *flags_req;
struct dev_pm_qos_request *min_frequency_req;
struct dev_pm_qos_request *max_frequency_req;
};

/* Action requested to pm_qos_update_target */
Expand Down Expand Up @@ -199,10 +191,6 @@ static inline s32 dev_pm_qos_read_value(struct device *dev,
switch (type) {
case DEV_PM_QOS_RESUME_LATENCY:
return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT;
case DEV_PM_QOS_MIN_FREQUENCY:
return PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE;
case DEV_PM_QOS_MAX_FREQUENCY:
return PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE;
default:
WARN_ON(1);
return 0;
Expand Down

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