diff options
| -rw-r--r-- | drivers/base/power/common.c | 2 | ||||
| -rw-r--r-- | drivers/base/power/domain.c | 13 | ||||
| -rw-r--r-- | drivers/base/power/wakeup.c | 2 | ||||
| -rw-r--r-- | drivers/cpufreq/scmi-cpufreq.c | 2 | ||||
| -rw-r--r-- | include/linux/pm_domain.h | 8 | ||||
| -rw-r--r-- | kernel/power/energy_model.c | 57 | ||||
| -rw-r--r-- | kernel/power/qos.c | 8 |
7 files changed, 69 insertions, 23 deletions
diff --git a/drivers/base/power/common.c b/drivers/base/power/common.c index b413951c6abc..22aedb28aad7 100644 --- a/drivers/base/power/common.c +++ b/drivers/base/power/common.c @@ -160,7 +160,7 @@ EXPORT_SYMBOL_GPL(dev_pm_domain_attach_by_id); * For a detailed function description, see dev_pm_domain_attach_by_id(). */ struct device *dev_pm_domain_attach_by_name(struct device *dev, - char *name) + const char *name) { if (dev->pm_domain) return ERR_PTR(-EEXIST); diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 500de1dee967..2c334c01fc43 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -2483,7 +2483,7 @@ EXPORT_SYMBOL_GPL(genpd_dev_pm_attach_by_id); * power-domain-names DT property. For further description see * genpd_dev_pm_attach_by_id(). */ -struct device *genpd_dev_pm_attach_by_name(struct device *dev, char *name) +struct device *genpd_dev_pm_attach_by_name(struct device *dev, const char *name) { int index; @@ -2948,18 +2948,11 @@ static int __init genpd_debug_init(void) genpd_debugfs_dir = debugfs_create_dir("pm_genpd", NULL); - if (!genpd_debugfs_dir) - return -ENOMEM; - - d = debugfs_create_file("pm_genpd_summary", S_IRUGO, - genpd_debugfs_dir, NULL, &summary_fops); - if (!d) - return -ENOMEM; + debugfs_create_file("pm_genpd_summary", S_IRUGO, genpd_debugfs_dir, + NULL, &summary_fops); list_for_each_entry(genpd, &gpd_list, gpd_list_node) { d = debugfs_create_dir(genpd->name, genpd_debugfs_dir); - if (!d) - return -ENOMEM; debugfs_create_file("current_state", 0444, d, genpd, &status_fops); diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c index 5fa1898755a3..f1fee72ed970 100644 --- a/drivers/base/power/wakeup.c +++ b/drivers/base/power/wakeup.c @@ -783,7 +783,7 @@ void pm_wakeup_ws_event(struct wakeup_source *ws, unsigned int msec, bool hard) EXPORT_SYMBOL_GPL(pm_wakeup_ws_event); /** - * pm_wakeup_event - Notify the PM core of a wakeup event. + * pm_wakeup_dev_event - Notify the PM core of a wakeup event. * @dev: Device the wakeup event is related to. * @msec: Anticipated event processing time (in milliseconds). * @hard: If set, abort suspends in progress and wake up from suspend-to-idle. diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c index 242c3370544e..9ed46d188cb5 100644 --- a/drivers/cpufreq/scmi-cpufreq.c +++ b/drivers/cpufreq/scmi-cpufreq.c @@ -187,8 +187,8 @@ static int scmi_cpufreq_exit(struct cpufreq_policy *policy) cpufreq_cooling_unregister(priv->cdev); dev_pm_opp_free_cpufreq_table(priv->cpu_dev, &policy->freq_table); - kfree(priv); dev_pm_opp_remove_all_dynamic(priv->cpu_dev); + kfree(priv); return 0; } diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index dd364abb649a..1ed5874bcee0 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -271,7 +271,7 @@ int genpd_dev_pm_attach(struct device *dev); struct device *genpd_dev_pm_attach_by_id(struct device *dev, unsigned int index); struct device *genpd_dev_pm_attach_by_name(struct device *dev, - char *name); + const char *name); #else /* !CONFIG_PM_GENERIC_DOMAINS_OF */ static inline int of_genpd_add_provider_simple(struct device_node *np, struct generic_pm_domain *genpd) @@ -324,7 +324,7 @@ static inline struct device *genpd_dev_pm_attach_by_id(struct device *dev, } static inline struct device *genpd_dev_pm_attach_by_name(struct device *dev, - char *name) + const char *name) { return NULL; } @@ -341,7 +341,7 @@ int dev_pm_domain_attach(struct device *dev, bool power_on); struct device *dev_pm_domain_attach_by_id(struct device *dev, unsigned int index); struct device *dev_pm_domain_attach_by_name(struct device *dev, - char *name); + const char *name); void dev_pm_domain_detach(struct device *dev, bool power_off); void dev_pm_domain_set(struct device *dev, struct dev_pm_domain *pd); #else @@ -355,7 +355,7 @@ static inline struct device *dev_pm_domain_attach_by_id(struct device *dev, return NULL; } static inline struct device *dev_pm_domain_attach_by_name(struct device *dev, - char *name) + const char *name) { return NULL; } diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c index d9dc2c38764a..7d66ee68aaaf 100644 --- a/kernel/power/energy_model.c +++ b/kernel/power/energy_model.c @@ -10,6 +10,7 @@ #include <linux/cpu.h> #include <linux/cpumask.h> +#include <linux/debugfs.h> #include <linux/energy_model.h> #include <linux/sched/topology.h> #include <linux/slab.h> @@ -23,6 +24,60 @@ static DEFINE_PER_CPU(struct em_perf_domain *, em_data); */ static DEFINE_MUTEX(em_pd_mutex); +#ifdef CONFIG_DEBUG_FS +static struct dentry *rootdir; + +static void em_debug_create_cs(struct em_cap_state *cs, struct dentry *pd) +{ + struct dentry *d; + char name[24]; + + snprintf(name, sizeof(name), "cs:%lu", cs->frequency); + + /* Create per-cs directory */ + d = debugfs_create_dir(name, pd); + debugfs_create_ulong("frequency", 0444, d, &cs->frequency); + debugfs_create_ulong("power", 0444, d, &cs->power); + debugfs_create_ulong("cost", 0444, d, &cs->cost); +} + +static int em_debug_cpus_show(struct seq_file *s, void *unused) +{ + seq_printf(s, "%*pbl\n", cpumask_pr_args(to_cpumask(s->private))); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(em_debug_cpus); + +static void em_debug_create_pd(struct em_perf_domain *pd, int cpu) +{ + struct dentry *d; + char name[8]; + int i; + + snprintf(name, sizeof(name), "pd%d", cpu); + + /* Create the directory of the performance domain */ + d = debugfs_create_dir(name, rootdir); + + debugfs_create_file("cpus", 0444, d, pd->cpus, &em_debug_cpus_fops); + + /* Create a sub-directory for each capacity state */ + for (i = 0; i < pd->nr_cap_states; i++) + em_debug_create_cs(&pd->table[i], d); +} + +static int __init em_debug_init(void) +{ + /* Create /sys/kernel/debug/energy_model directory */ + rootdir = debugfs_create_dir("energy_model", NULL); + + return 0; +} +core_initcall(em_debug_init); +#else /* CONFIG_DEBUG_FS */ +static void em_debug_create_pd(struct em_perf_domain *pd, int cpu) {} +#endif static struct em_perf_domain *em_create_pd(cpumask_t *span, int nr_states, struct em_data_callback *cb) { @@ -102,6 +157,8 @@ static struct em_perf_domain *em_create_pd(cpumask_t *span, int nr_states, pd->nr_cap_states = nr_states; cpumask_copy(to_cpumask(pd->cpus), span); + em_debug_create_pd(pd, cpu); + return pd; free_cs_table: diff --git a/kernel/power/qos.c b/kernel/power/qos.c index b7a82502857a..9d22131afc1e 100644 --- a/kernel/power/qos.c +++ b/kernel/power/qos.c @@ -582,10 +582,8 @@ static int register_pm_qos_misc(struct pm_qos_object *qos, struct dentry *d) qos->pm_qos_power_miscdev.name = qos->name; qos->pm_qos_power_miscdev.fops = &pm_qos_power_fops; - if (d) { - (void)debugfs_create_file(qos->name, S_IRUGO, d, - (void *)qos, &pm_qos_debug_fops); - } + debugfs_create_file(qos->name, S_IRUGO, d, (void *)qos, + &pm_qos_debug_fops); return misc_register(&qos->pm_qos_power_miscdev); } @@ -685,8 +683,6 @@ static int __init pm_qos_power_init(void) BUILD_BUG_ON(ARRAY_SIZE(pm_qos_array) != PM_QOS_NUM_CLASSES); d = debugfs_create_dir("pm_qos", NULL); - if (IS_ERR_OR_NULL(d)) - d = NULL; for (i = PM_QOS_CPU_DMA_LATENCY; i < PM_QOS_NUM_CLASSES; i++) { ret = register_pm_qos_misc(pm_qos_array[i], d); |