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Merge branches 'pm-core', 'pm-opp' and 'pm-qos'

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* pm-core:
  PM / sysfs: Constify attribute groups
  PM: Constify info string used in messages
  PM: Constify returned PM event name
  PM / wakeirq: Convert to SRCU

* pm-opp:
  PM / OPP: Add dev_pm_opp_{set|put}_clkname()
  PM / OPP: Use - instead of @ for DT entries
  PM / OPP: Don't create debugfs "supply-0" directory unnecessarily
  PM / OPP: opp-microvolt is not optional if regulators are set
  PM / OPP: Don't create copy of regulators unnecessarily
  PM / OPP: Reorganize _generic_set_opp_regulator()

* pm-qos:
  PM / QoS: constify *_attribute_group.
This commit is contained in:
Rafael J. Wysocki 2017-07-03 14:22:05 +02:00
parent 301f8d7463 cbcba35dba 829a4e8c0e dbb1d8b70c
commit fb0356c478
8 changed files with 185 additions and 111 deletions
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38
Documentation/devicetree/bindings/opp/opp.txt
View file

@ -186,20 +186,20 @@ Example 1: Single cluster Dual-core ARM cortex A9, switch DVFS states together.
compatible = "operating-points-v2";
opp-shared;
opp@1000000000 {
opp-1000000000 {
opp-hz = /bits/ 64 <1000000000>;
opp-microvolt = <975000 970000 985000>;
opp-microamp = <70000>;
clock-latency-ns = <300000>;
opp-suspend;
};
opp@1100000000 {
opp-1100000000 {
opp-hz = /bits/ 64 <1100000000>;
opp-microvolt = <1000000 980000 1010000>;
opp-microamp = <80000>;
clock-latency-ns = <310000>;
};
opp@1200000000 {
opp-1200000000 {
opp-hz = /bits/ 64 <1200000000>;
opp-microvolt = <1025000>;
clock-latency-ns = <290000>;
@ -265,20 +265,20 @@ independently.
* independently.
*/
opp@1000000000 {
opp-1000000000 {
opp-hz = /bits/ 64 <1000000000>;
opp-microvolt = <975000 970000 985000>;
opp-microamp = <70000>;
clock-latency-ns = <300000>;
opp-suspend;
};
opp@1100000000 {
opp-1100000000 {
opp-hz = /bits/ 64 <1100000000>;
opp-microvolt = <1000000 980000 1010000>;
opp-microamp = <80000>;
clock-latency-ns = <310000>;
};
opp@1200000000 {
opp-1200000000 {
opp-hz = /bits/ 64 <1200000000>;
opp-microvolt = <1025000>;
opp-microamp = <90000;
@ -341,20 +341,20 @@ DVFS state together.
compatible = "operating-points-v2";
opp-shared;
opp@1000000000 {
opp-1000000000 {
opp-hz = /bits/ 64 <1000000000>;
opp-microvolt = <975000 970000 985000>;
opp-microamp = <70000>;
clock-latency-ns = <300000>;
opp-suspend;
};
opp@1100000000 {
opp-1100000000 {
opp-hz = /bits/ 64 <1100000000>;
opp-microvolt = <1000000 980000 1010000>;
opp-microamp = <80000>;
clock-latency-ns = <310000>;
};
opp@1200000000 {
opp-1200000000 {
opp-hz = /bits/ 64 <1200000000>;
opp-microvolt = <1025000>;
opp-microamp = <90000>;
@ -367,20 +367,20 @@ DVFS state together.
compatible = "operating-points-v2";
opp-shared;
opp@1300000000 {
opp-1300000000 {
opp-hz = /bits/ 64 <1300000000>;
opp-microvolt = <1050000 1045000 1055000>;
opp-microamp = <95000>;
clock-latency-ns = <400000>;
opp-suspend;
};
opp@1400000000 {
opp-1400000000 {
opp-hz = /bits/ 64 <1400000000>;
opp-microvolt = <1075000>;
opp-microamp = <100000>;
clock-latency-ns = <400000>;
};
opp@1500000000 {
opp-1500000000 {
opp-hz = /bits/ 64 <1500000000>;
opp-microvolt = <1100000 1010000 1110000>;
opp-microamp = <95000>;
@ -409,7 +409,7 @@ Example 4: Handling multiple regulators
compatible = "operating-points-v2";
opp-shared;
opp@1000000000 {
opp-1000000000 {
opp-hz = /bits/ 64 <1000000000>;
opp-microvolt = <970000>, /* Supply 0 */
<960000>, /* Supply 1 */
@ -422,7 +422,7 @@ Example 4: Handling multiple regulators
/* OR */
opp@1000000000 {
opp-1000000000 {
opp-hz = /bits/ 64 <1000000000>;
opp-microvolt = <975000 970000 985000>, /* Supply 0 */
<965000 960000 975000>, /* Supply 1 */
@ -435,7 +435,7 @@ Example 4: Handling multiple regulators
/* OR */
opp@1000000000 {
opp-1000000000 {
opp-hz = /bits/ 64 <1000000000>;
opp-microvolt = <975000 970000 985000>, /* Supply 0 */
<965000 960000 975000>, /* Supply 1 */
@ -467,7 +467,7 @@ Example 5: opp-supported-hw
status = "okay";
opp-shared;
opp@600000000 {
opp-600000000 {
/*
* Supports all substrate and process versions for 0xF
* cuts, i.e. only first four cuts.
@ -478,7 +478,7 @@ Example 5: opp-supported-hw
...
};
opp@800000000 {
opp-800000000 {
/*
* Supports:
* - cuts: only one, 6th cut (represented by 6th bit).
@ -510,7 +510,7 @@ Example 6: opp-microvolt-<name>, opp-microamp-<name>:
compatible = "operating-points-v2";
opp-shared;
opp@1000000000 {
opp-1000000000 {
opp-hz = /bits/ 64 <1000000000>;
opp-microvolt-slow = <915000 900000 925000>;
opp-microvolt-fast = <975000 970000 985000>;
@ -518,7 +518,7 @@ Example 6: opp-microvolt-<name>, opp-microamp-<name>:
opp-microamp-fast = <71000>;
};
opp@1200000000 {
opp-1200000000 {
opp-hz = /bits/ 64 <1200000000>;
opp-microvolt-slow = <915000 900000 925000>, /* Supply vcc0 */
<925000 910000 935000>; /* Supply vcc1 */

30
drivers/base/power/main.c
View file

@ -62,7 +62,7 @@ static pm_message_t pm_transition;
static int async_error;
static char *pm_verb(int event)
static const char *pm_verb(int event)
{
switch (event) {
case PM_EVENT_SUSPEND:
@ -208,7 +208,8 @@ static ktime_t initcall_debug_start(struct device *dev)
}
static void initcall_debug_report(struct device *dev, ktime_t calltime,
int error, pm_message_t state, char *info)
int error, pm_message_t state,
const char *info)
{
ktime_t rettime;
s64 nsecs;
@ -403,21 +404,22 @@ static pm_callback_t pm_noirq_op(const struct dev_pm_ops *ops, pm_message_t stat
return NULL;
}
static void pm_dev_dbg(struct device *dev, pm_message_t state, char *info)
static void pm_dev_dbg(struct device *dev, pm_message_t state, const char *info)
{
dev_dbg(dev, "%s%s%s\n", info, pm_verb(state.event),
((state.event & PM_EVENT_SLEEP) && device_may_wakeup(dev)) ?
", may wakeup" : "");
}
static void pm_dev_err(struct device *dev, pm_message_t state, char *info,
static void pm_dev_err(struct device *dev, pm_message_t state, const char *info,
int error)
{
printk(KERN_ERR "PM: Device %s failed to %s%s: error %d\n",
dev_name(dev), pm_verb(state.event), info, error);
}
static void dpm_show_time(ktime_t starttime, pm_message_t state, char *info)
static void dpm_show_time(ktime_t starttime, pm_message_t state,
const char *info)
{
ktime_t calltime;
u64 usecs64;
@ -435,7 +437,7 @@ static void dpm_show_time(ktime_t starttime, pm_message_t state, char *info)
}
static int dpm_run_callback(pm_callback_t cb, struct device *dev,
pm_message_t state, char *info)
pm_message_t state, const char *info)
{
ktime_t calltime;
int error;
@ -535,7 +537,7 @@ static void dpm_watchdog_clear(struct dpm_watchdog *wd)
static int device_resume_noirq(struct device *dev, pm_message_t state, bool async)
{
pm_callback_t callback = NULL;
char *info = NULL;
const char *info = NULL;
int error = 0;
TRACE_DEVICE(dev);
@ -665,7 +667,7 @@ void dpm_resume_noirq(pm_message_t state)
static int device_resume_early(struct device *dev, pm_message_t state, bool async)
{
pm_callback_t callback = NULL;
char *info = NULL;
const char *info = NULL;
int error = 0;
TRACE_DEVICE(dev);
@ -793,7 +795,7 @@ EXPORT_SYMBOL_GPL(dpm_resume_start);
static int device_resume(struct device *dev, pm_message_t state, bool async)
{
pm_callback_t callback = NULL;
char *info = NULL;
const char *info = NULL;
int error = 0;
DECLARE_DPM_WATCHDOG_ON_STACK(wd);
@ -955,7 +957,7 @@ void dpm_resume(pm_message_t state)
static void device_complete(struct device *dev, pm_message_t state)
{
void (*callback)(struct device *) = NULL;
char *info = NULL;
const char *info = NULL;
if (dev->power.syscore)
return;
@ -1080,7 +1082,7 @@ static pm_message_t resume_event(pm_message_t sleep_state)
static int __device_suspend_noirq(struct device *dev, pm_message_t state, bool async)
{
pm_callback_t callback = NULL;
char *info = NULL;
const char *info = NULL;
int error = 0;
TRACE_DEVICE(dev);
@ -1225,7 +1227,7 @@ int dpm_suspend_noirq(pm_message_t state)
static int __device_suspend_late(struct device *dev, pm_message_t state, bool async)
{
pm_callback_t callback = NULL;
char *info = NULL;
const char *info = NULL;
int error = 0;
TRACE_DEVICE(dev);
@ -1384,7 +1386,7 @@ EXPORT_SYMBOL_GPL(dpm_suspend_end);
*/
static int legacy_suspend(struct device *dev, pm_message_t state,
int (*cb)(struct device *dev, pm_message_t state),
char *info)
const char *info)
{
int error;
ktime_t calltime;
@ -1426,7 +1428,7 @@ static void dpm_clear_suppliers_direct_complete(struct device *dev)
static int __device_suspend(struct device *dev, pm_message_t state, bool async)
{
pm_callback_t callback = NULL;
char *info = NULL;
const char *info = NULL;
int error = 0;
DECLARE_DPM_WATCHDOG_ON_STACK(wd);

158
drivers/base/power/opp/core.c
View file

@ -180,7 +180,7 @@ unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev)
{
struct opp_table *opp_table;
struct dev_pm_opp *opp;
struct regulator *reg, **regulators;
struct regulator *reg;
unsigned long latency_ns = 0;
int ret, i, count;
struct {
@ -198,15 +198,9 @@ unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev)
if (!count)
goto put_opp_table;
regulators = kmalloc_array(count, sizeof(*regulators), GFP_KERNEL);
if (!regulators)
goto put_opp_table;
uV = kmalloc_array(count, sizeof(*uV), GFP_KERNEL);
if (!uV)
goto free_regulators;
memcpy(regulators, opp_table->regulators, count * sizeof(*regulators));
goto put_opp_table;
mutex_lock(&opp_table->lock);
@ -232,15 +226,13 @@ unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev)
* isn't freed, while we are executing this routine.
*/
for (i = 0; i < count; i++) {
reg = regulators[i];
reg = opp_table->regulators[i];
ret = regulator_set_voltage_time(reg, uV[i].min, uV[i].max);
if (ret > 0)
latency_ns += ret * 1000;
}
kfree(uV);
free_regulators:
kfree(regulators);
put_opp_table:
dev_pm_opp_put_opp_table(opp_table);
@ -543,17 +535,18 @@ _generic_set_opp_clk_only(struct device *dev, struct clk *clk,
return ret;
}
static int _generic_set_opp(struct dev_pm_set_opp_data *data)
static int _generic_set_opp_regulator(const struct opp_table *opp_table,
struct device *dev,
unsigned long old_freq,
unsigned long freq,
struct dev_pm_opp_supply *old_supply,
struct dev_pm_opp_supply *new_supply)
{
struct dev_pm_opp_supply *old_supply = data->old_opp.supplies;
struct dev_pm_opp_supply *new_supply = data->new_opp.supplies;
unsigned long old_freq = data->old_opp.rate, freq = data->new_opp.rate;
struct regulator *reg = data->regulators[0];
struct device *dev= data->dev;
struct regulator *reg = opp_table->regulators[0];
int ret;
/* This function only supports single regulator per device */
if (WARN_ON(data->regulator_count > 1)) {
if (WARN_ON(opp_table->regulator_count > 1)) {
dev_err(dev, "multiple regulators are not supported\n");
return -EINVAL;
}
@ -566,7 +559,7 @@ static int _generic_set_opp(struct dev_pm_set_opp_data *data)
}
/* Change frequency */
ret = _generic_set_opp_clk_only(dev, data->clk, old_freq, freq);
ret = _generic_set_opp_clk_only(dev, opp_table->clk, old_freq, freq);
if (ret)
goto restore_voltage;
@ -580,12 +573,12 @@ static int _generic_set_opp(struct dev_pm_set_opp_data *data)
return 0;
restore_freq:
if (_generic_set_opp_clk_only(dev, data->clk, freq, old_freq))
if (_generic_set_opp_clk_only(dev, opp_table->clk, freq, old_freq))
dev_err(dev, "%s: failed to restore old-freq (%lu Hz)\n",
__func__, old_freq);
restore_voltage:
/* This shouldn't harm even if the voltages weren't updated earlier */
if (old_supply->u_volt)
if (old_supply)
_set_opp_voltage(dev, reg, old_supply);
return ret;
@ -603,10 +596,7 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
{
struct opp_table *opp_table;
unsigned long freq, old_freq;
int (*set_opp)(struct dev_pm_set_opp_data *data);
struct dev_pm_opp *old_opp, *opp;
struct regulator **regulators;
struct dev_pm_set_opp_data *data;
struct clk *clk;
int ret, size;
@ -661,38 +651,35 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
dev_dbg(dev, "%s: switching OPP: %lu Hz --> %lu Hz\n", __func__,
old_freq, freq);
regulators = opp_table->regulators;
/* Only frequency scaling */
if (!regulators) {
if (!opp_table->regulators) {
ret = _generic_set_opp_clk_only(dev, clk, old_freq, freq);
goto put_opps;
} else if (!opp_table->set_opp) {
ret = _generic_set_opp_regulator(opp_table, dev, old_freq, freq,
IS_ERR(old_opp) ? NULL : old_opp->supplies,
opp->supplies);
} else {
struct dev_pm_set_opp_data *data;
data = opp_table->set_opp_data;
data->regulators = opp_table->regulators;
data->regulator_count = opp_table->regulator_count;
data->clk = clk;
data->dev = dev;
data->old_opp.rate = old_freq;
size = sizeof(*opp->supplies) * opp_table->regulator_count;
if (IS_ERR(old_opp))
memset(data->old_opp.supplies, 0, size);
else
memcpy(data->old_opp.supplies, old_opp->supplies, size);
data->new_opp.rate = freq;
memcpy(data->new_opp.supplies, opp->supplies, size);
ret = opp_table->set_opp(data);
}
if (opp_table->set_opp)
set_opp = opp_table->set_opp;
else
set_opp = _generic_set_opp;
data = opp_table->set_opp_data;
data->regulators = regulators;
data->regulator_count = opp_table->regulator_count;
data->clk = clk;
data->dev = dev;
data->old_opp.rate = old_freq;
size = sizeof(*opp->supplies) * opp_table->regulator_count;
if (IS_ERR(old_opp))
memset(data->old_opp.supplies, 0, size);
else
memcpy(data->old_opp.supplies, old_opp->supplies, size);
data->new_opp.rate = freq;
memcpy(data->new_opp.supplies, opp->supplies, size);
ret = set_opp(data);
put_opps:
dev_pm_opp_put(opp);
put_old_opp:
if (!IS_ERR(old_opp))
@ -1375,6 +1362,73 @@ void dev_pm_opp_put_regulators(struct opp_table *opp_table)
}
EXPORT_SYMBOL_GPL(dev_pm_opp_put_regulators);
/**
* dev_pm_opp_set_clkname() - Set clk name for the device
* @dev: Device for which clk name is being set.
* @name: Clk name.
*
* In order to support OPP switching, OPP layer needs to get pointer to the
* clock for the device. Simple cases work fine without using this routine (i.e.
* by passing connection-id as NULL), but for a device with multiple clocks
* available, the OPP core needs to know the exact name of the clk to use.
*
* This must be called before any OPPs are initialized for the device.
*/
struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char *name)
{
struct opp_table *opp_table;
int ret;
opp_table = dev_pm_opp_get_opp_table(dev);
if (!opp_table)
return ERR_PTR(-ENOMEM);
/* This should be called before OPPs are initialized */
if (WARN_ON(!list_empty(&opp_table->opp_list))) {
ret = -EBUSY;
goto err;
}
/* Already have default clk set, free it */
if (!IS_ERR(opp_table->clk))
clk_put(opp_table->clk);
/* Find clk for the device */
opp_table->clk = clk_get(dev, name);
if (IS_ERR(opp_table->clk)) {
ret = PTR_ERR(opp_table->clk);
if (ret != -EPROBE_DEFER) {
dev_err(dev, "%s: Couldn't find clock: %d\n", __func__,
ret);
}
goto err;
}
return opp_table;
err:
dev_pm_opp_put_opp_table(opp_table);
return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_set_clkname);
/**
* dev_pm_opp_put_clkname() - Releases resources blocked for clk.
* @opp_table: OPP table returned from dev_pm_opp_set_clkname().
*/
void dev_pm_opp_put_clkname(struct opp_table *opp_table)
{
/* Make sure there are no concurrent readers while updating opp_table */
WARN_ON(!list_empty(&opp_table->opp_list));
clk_put(opp_table->clk);
opp_table->clk = ERR_PTR(-EINVAL);
dev_pm_opp_put_opp_table(opp_table);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_put_clkname);
/**
* dev_pm_opp_register_set_opp_helper() - Register custom set OPP helper
* @dev: Device for which the helper is getting registered.

7
drivers/base/power/opp/debugfs.c
View file

@ -40,11 +40,10 @@ static bool opp_debug_create_supplies(struct dev_pm_opp *opp,
struct dentry *pdentry)
{
struct dentry *d;
int i = 0;
int i;
char *name;
/* Always create at least supply-0 directory */
do {
for (i = 0; i < opp_table->regulator_count; i++) {
name = kasprintf(GFP_KERNEL, "supply-%d", i);
/* Create per-opp directory */
@ -70,7 +69,7 @@ static bool opp_debug_create_supplies(struct dev_pm_opp *opp,
if (!debugfs_create_ulong("u_amp", S_IRUGO, d,
&opp->supplies[i].u_amp))
return false;
} while (++i < opp_table->regulator_count);
}
return true;
}

10
drivers/base/power/opp/of.c
View file

@ -131,8 +131,14 @@ static int opp_parse_supplies(struct dev_pm_opp *opp, struct device *dev,
prop = of_find_property(opp->np, name, NULL);
/* Missing property isn't a problem, but an invalid entry is */
if (!prop)
return 0;
if (!prop) {
if (!opp_table->regulator_count)
return 0;
dev_err(dev, "%s: opp-microvolt missing although OPP managing regulators\n",
__func__);
return -EINVAL;
}
}
vcount = of_property_count_u32_elems(opp->np, name);

12
drivers/base/power/sysfs.c
View file

@ -607,7 +607,7 @@ static struct attribute *power_attrs[] = {
#endif /* CONFIG_PM_ADVANCED_DEBUG */
NULL,
};
static struct attribute_group pm_attr_group = {
static const struct attribute_group pm_attr_group = {
.name = power_group_name,
.attrs = power_attrs,
};
@ -629,7 +629,7 @@ static struct attribute *wakeup_attrs[] = {
#endif
NULL,
};
static struct attribute_group pm_wakeup_attr_group = {
static const struct attribute_group pm_wakeup_attr_group = {
.name = power_group_name,
.attrs = wakeup_attrs,
};
@ -644,7 +644,7 @@ static struct attribute *runtime_attrs[] = {
&dev_attr_autosuspend_delay_ms.attr,
NULL,
};
static struct attribute_group pm_runtime_attr_group = {
static const struct attribute_group pm_runtime_attr_group = {
.name = power_group_name,
.attrs = runtime_attrs,
};
@ -653,7 +653,7 @@ static struct attribute *pm_qos_resume_latency_attrs[] = {
&dev_attr_pm_qos_resume_latency_us.attr,
NULL,
};
static struct attribute_group pm_qos_resume_latency_attr_group = {
static const struct attribute_group pm_qos_resume_latency_attr_group = {
.name = power_group_name,
.attrs = pm_qos_resume_latency_attrs,
};
@ -662,7 +662,7 @@ static struct attribute *pm_qos_latency_tolerance_attrs[] = {
&dev_attr_pm_qos_latency_tolerance_us.attr,
NULL,
};
static struct attribute_group pm_qos_latency_tolerance_attr_group = {
static const struct attribute_group pm_qos_latency_tolerance_attr_group = {
.name = power_group_name,
.attrs = pm_qos_latency_tolerance_attrs,
};
@ -672,7 +672,7 @@ static struct attribute *pm_qos_flags_attrs[] = {
&dev_attr_pm_qos_remote_wakeup.attr,
NULL,
};
static struct attribute_group pm_qos_flags_attr_group = {
static const struct attribute_group pm_qos_flags_attr_group = {
.name = power_group_name,
.attrs = pm_qos_flags_attrs,
};

32
drivers/base/power/wakeup.c
View file

@ -60,6 +60,8 @@ static LIST_HEAD(wakeup_sources);
static DECLARE_WAIT_QUEUE_HEAD(wakeup_count_wait_queue);
DEFINE_STATIC_SRCU(wakeup_srcu);
static struct wakeup_source deleted_ws = {
.name = "deleted",
.lock = __SPIN_LOCK_UNLOCKED(deleted_ws.lock),
@ -198,7 +200,7 @@ void wakeup_source_remove(struct wakeup_source *ws)
spin_lock_irqsave(&events_lock, flags);
list_del_rcu(&ws->entry);
spin_unlock_irqrestore(&events_lock, flags);
synchronize_rcu();
synchronize_srcu(&wakeup_srcu);
}
EXPORT_SYMBOL_GPL(wakeup_source_remove);
@ -332,12 +334,12 @@ void device_wakeup_detach_irq(struct device *dev)
void device_wakeup_arm_wake_irqs(void)
{
struct wakeup_source *ws;
int srcuidx;
rcu_read_lock();
srcuidx = srcu_read_lock(&wakeup_srcu);
list_for_each_entry_rcu(ws, &wakeup_sources, entry)
dev_pm_arm_wake_irq(ws->wakeirq);
rcu_read_unlock();
srcu_read_unlock(&wakeup_srcu, srcuidx);
}
/**
@ -348,12 +350,12 @@ void device_wakeup_arm_wake_irqs(void)
void device_wakeup_disarm_wake_irqs(void)
{
struct wakeup_source *ws;
int srcuidx;
rcu_read_lock();
srcuidx = srcu_read_lock(&wakeup_srcu);
list_for_each_entry_rcu(ws, &wakeup_sources, entry)
dev_pm_disarm_wake_irq(ws->wakeirq);
rcu_read_unlock();
srcu_read_unlock(&wakeup_srcu, srcuidx);
}
/**
@ -804,10 +806,10 @@ EXPORT_SYMBOL_GPL(pm_wakeup_dev_event);
void pm_print_active_wakeup_sources(void)
{
struct wakeup_source *ws;
int active = 0;
int srcuidx, active = 0;
struct wakeup_source *last_activity_ws = NULL;
rcu_read_lock();
srcuidx = srcu_read_lock(&wakeup_srcu);
list_for_each_entry_rcu(ws, &wakeup_sources, entry) {
if (ws->active) {
pr_debug("active wakeup source: %s\n", ws->name);
@ -823,7 +825,7 @@ void pm_print_active_wakeup_sources(void)
if (!active && last_activity_ws)
pr_debug("last active wakeup source: %s\n",
last_activity_ws->name);
rcu_read_unlock();
srcu_read_unlock(&wakeup_srcu, srcuidx);
}
EXPORT_SYMBOL_GPL(pm_print_active_wakeup_sources);
@ -950,8 +952,9 @@ void pm_wakep_autosleep_enabled(bool set)
{
struct wakeup_source *ws;
ktime_t now = ktime_get();
int srcuidx;
rcu_read_lock();
srcuidx = srcu_read_lock(&wakeup_srcu);
list_for_each_entry_rcu(ws, &wakeup_sources, entry) {
spin_lock_irq(&ws->lock);
if (ws->autosleep_enabled != set) {
@ -965,7 +968,7 @@ void pm_wakep_autosleep_enabled(bool set)
}
spin_unlock_irq(&ws->lock);
}
rcu_read_unlock();
srcu_read_unlock(&wakeup_srcu, srcuidx);
}
#endif /* CONFIG_PM_AUTOSLEEP */
@ -1026,15 +1029,16 @@ static int print_wakeup_source_stats(struct seq_file *m,
static int wakeup_sources_stats_show(struct seq_file *m, void *unused)
{
struct wakeup_source *ws;
int srcuidx;
seq_puts(m, "name\t\tactive_count\tevent_count\twakeup_count\t"
"expire_count\tactive_since\ttotal_time\tmax_time\t"
"last_change\tprevent_suspend_time\n");
rcu_read_lock();
srcuidx = srcu_read_lock(&wakeup_srcu);
list_for_each_entry_rcu(ws, &wakeup_sources, entry)
print_wakeup_source_stats(m, ws);
rcu_read_unlock();
srcu_read_unlock(&wakeup_srcu, srcuidx);
print_wakeup_source_stats(m, &deleted_ws);

9
include/linux/pm_opp.h
View file

@ -121,6 +121,8 @@ struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name)
void dev_pm_opp_put_prop_name(struct opp_table *opp_table);
struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count);
void dev_pm_opp_put_regulators(struct opp_table *opp_table);
struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char * name);
void dev_pm_opp_put_clkname(struct opp_table *opp_table);
struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data));
void dev_pm_opp_register_put_opp_helper(struct opp_table *opp_table);
int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
@ -257,6 +259,13 @@ static inline struct opp_table *dev_pm_opp_set_regulators(struct device *dev, co
static inline void dev_pm_opp_put_regulators(struct opp_table *opp_table) {}
static inline struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char * name)
{
return ERR_PTR(-ENOTSUPP);
}
static inline void dev_pm_opp_put_clkname(struct opp_table *opp_table) {}
static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
{
return -ENOTSUPP;