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Merge branch 'pm-opp' into pm-cpufreq

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This commit is contained in:
Rafael J. Wysocki 2016-05-05 01:38:56 +02:00
commit 28ed05732a
3 changed files with 112 additions and 44 deletions
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58
drivers/base/power/opp/core.c
View File

@ -1845,21 +1845,11 @@ struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev)
}
EXPORT_SYMBOL_GPL(dev_pm_opp_get_notifier);
#ifdef CONFIG_OF
/**
* dev_pm_opp_of_remove_table() - Free OPP table entries created from static DT
* entries
* @dev: device pointer used to lookup OPP table.
*
* Free OPPs created using static entries present in DT.
*
* Locking: The internal opp_table and opp structures are RCU protected.
* Hence this function indirectly uses RCU updater strategy with mutex locks
* to keep the integrity of the internal data structures. Callers should ensure
* that this function is *NOT* called under RCU protection or in contexts where
* mutex cannot be locked.
/*
* Free OPPs either created using static entries present in DT or even the
* dynamically added entries based on remove_all param.
*/
void dev_pm_opp_of_remove_table(struct device *dev)
static void _dev_pm_opp_remove_table(struct device *dev, bool remove_all)
{
struct opp_table *opp_table;
struct dev_pm_opp *opp, *tmp;
@ -1884,7 +1874,7 @@ void dev_pm_opp_of_remove_table(struct device *dev)
if (list_is_singular(&opp_table->dev_list)) {
/* Free static OPPs */
list_for_each_entry_safe(opp, tmp, &opp_table->opp_list, node) {
if (!opp->dynamic)
if (remove_all || !opp->dynamic)
_opp_remove(opp_table, opp, true);
}
} else {
@ -1894,6 +1884,44 @@ void dev_pm_opp_of_remove_table(struct device *dev)
unlock:
mutex_unlock(&opp_table_lock);
}
/**
* dev_pm_opp_remove_table() - Free all OPPs associated with the device
* @dev: device pointer used to lookup OPP table.
*
* Free both OPPs created using static entries present in DT and the
* dynamically added entries.
*
* Locking: The internal opp_table and opp structures are RCU protected.
* Hence this function indirectly uses RCU updater strategy with mutex locks
* to keep the integrity of the internal data structures. Callers should ensure
* that this function is *NOT* called under RCU protection or in contexts where
* mutex cannot be locked.
*/
void dev_pm_opp_remove_table(struct device *dev)
{
_dev_pm_opp_remove_table(dev, true);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_remove_table);
#ifdef CONFIG_OF
/**
* dev_pm_opp_of_remove_table() - Free OPP table entries created from static DT
* entries
* @dev: device pointer used to lookup OPP table.
*
* Free OPPs created using static entries present in DT.
*
* Locking: The internal opp_table and opp structures are RCU protected.
* Hence this function indirectly uses RCU updater strategy with mutex locks
* to keep the integrity of the internal data structures. Callers should ensure
* that this function is *NOT* called under RCU protection or in contexts where
* mutex cannot be locked.
*/
void dev_pm_opp_of_remove_table(struct device *dev)
{
_dev_pm_opp_remove_table(dev, false);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_of_remove_table);
/* Returns opp descriptor node for a device, caller must do of_node_put() */

66
drivers/base/power/opp/cpu.c
View File

@ -119,20 +119,8 @@ void dev_pm_opp_free_cpufreq_table(struct device *dev,
EXPORT_SYMBOL_GPL(dev_pm_opp_free_cpufreq_table);
#endif /* CONFIG_CPU_FREQ */
#ifdef CONFIG_OF
/**
* dev_pm_opp_of_cpumask_remove_table() - Removes OPP table for @cpumask
* @cpumask: cpumask for which OPP table needs to be removed
*
* This removes the OPP tables for CPUs present in the @cpumask.
*
* Locking: The internal opp_table and opp structures are RCU protected.
* Hence this function internally uses RCU updater strategy with mutex locks
* to keep the integrity of the internal data structures. Callers should ensure
* that this function is *NOT* called under RCU protection or in contexts where
* mutex cannot be locked.
*/
void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask)
static void
_dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask, bool of)
{
struct device *cpu_dev;
int cpu;
@ -147,9 +135,51 @@ void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask)
continue;
}
if (of)
dev_pm_opp_of_remove_table(cpu_dev);
else
dev_pm_opp_remove_table(cpu_dev);
}
}
/**
* dev_pm_opp_cpumask_remove_table() - Removes OPP table for @cpumask
* @cpumask: cpumask for which OPP table needs to be removed
*
* This removes the OPP tables for CPUs present in the @cpumask.
* This should be used to remove all the OPPs entries associated with
* the cpus in @cpumask.
*
* Locking: The internal opp_table and opp structures are RCU protected.
* Hence this function internally uses RCU updater strategy with mutex locks
* to keep the integrity of the internal data structures. Callers should ensure
* that this function is *NOT* called under RCU protection or in contexts where
* mutex cannot be locked.
*/
void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask)
{
_dev_pm_opp_cpumask_remove_table(cpumask, false);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_cpumask_remove_table);
#ifdef CONFIG_OF
/**
* dev_pm_opp_of_cpumask_remove_table() - Removes OPP table for @cpumask
* @cpumask: cpumask for which OPP table needs to be removed
*
* This removes the OPP tables for CPUs present in the @cpumask.
* This should be used only to remove static entries created from DT.
*
* Locking: The internal opp_table and opp structures are RCU protected.
* Hence this function internally uses RCU updater strategy with mutex locks
* to keep the integrity of the internal data structures. Callers should ensure
* that this function is *NOT* called under RCU protection or in contexts where
* mutex cannot be locked.
*/
void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask)
{
_dev_pm_opp_cpumask_remove_table(cpumask, true);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_of_cpumask_remove_table);
/**
@ -164,7 +194,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_of_cpumask_remove_table);
* that this function is *NOT* called under RCU protection or in contexts where
* mutex cannot be locked.
*/
int dev_pm_opp_of_cpumask_add_table(cpumask_var_t cpumask)
int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask)
{
struct device *cpu_dev;
int cpu, ret = 0;
@ -217,7 +247,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_of_cpumask_add_table);
* that this function is *NOT* called under RCU protection or in contexts where
* mutex cannot be locked.
*/
int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask)
int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
{
struct device_node *np, *tmp_np;
struct device *tcpu_dev;
@ -288,7 +318,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_of_get_sharing_cpus);
* mutex cannot be locked.
*/
int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev,
const cpumask_var_t cpumask)
const struct cpumask *cpumask)
{
struct opp_device *opp_dev;
struct opp_table *opp_table;
@ -346,7 +376,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_set_sharing_cpus);
* that this function is *NOT* called under RCU protection or in contexts where
* mutex cannot be locked.
*/
int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask)
int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
{
struct opp_device *opp_dev;
struct opp_table *opp_table;

30
include/linux/pm_opp.h
View File

@ -65,8 +65,10 @@ void dev_pm_opp_put_prop_name(struct device *dev);
int dev_pm_opp_set_regulator(struct device *dev, const char *name);
void dev_pm_opp_put_regulator(struct device *dev);
int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const cpumask_var_t cpumask);
int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask);
int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask);
int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
void dev_pm_opp_remove_table(struct device *dev);
void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask);
#else
static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
{
@ -180,24 +182,32 @@ static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_f
return -ENOTSUPP;
}
static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const cpumask_var_t cpumask)
static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask)
{
return -ENOTSUPP;
}
static inline int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask)
static inline int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
{
return -EINVAL;
}
static inline void dev_pm_opp_remove_table(struct device *dev)
{
}
static inline void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask)
{
}
#endif /* CONFIG_PM_OPP */
#if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
int dev_pm_opp_of_add_table(struct device *dev);
void dev_pm_opp_of_remove_table(struct device *dev);
int dev_pm_opp_of_cpumask_add_table(cpumask_var_t cpumask);
void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask);
int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask);
int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask);
void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask);
int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
#else
static inline int dev_pm_opp_of_add_table(struct device *dev)
{
@ -208,16 +218,16 @@ static inline void dev_pm_opp_of_remove_table(struct device *dev)
{
}
static inline int dev_pm_opp_of_cpumask_add_table(cpumask_var_t cpumask)
static inline int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask)
{
return -ENOTSUPP;
}
static inline void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask)
static inline void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask)
{
}
static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask)
static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
{
return -ENOTSUPP;
}