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3b52fc5d78
Add a helper to change the owner of a device's power entries. This needs to happen when the ownership of a device is changed, e.g. when moving network devices between network namespaces. This function will be used to correctly account for ownership changes, e.g. when moving network devices between network namespaces. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: "Rafael J. Wysocki" <rafael@kernel.org> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
167 lines
4.8 KiB
C
167 lines
4.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/pm_qos.h>
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static inline void device_pm_init_common(struct device *dev)
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{
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if (!dev->power.early_init) {
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spin_lock_init(&dev->power.lock);
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dev->power.qos = NULL;
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dev->power.early_init = true;
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}
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}
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#ifdef CONFIG_PM
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static inline void pm_runtime_early_init(struct device *dev)
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{
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dev->power.disable_depth = 1;
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device_pm_init_common(dev);
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}
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extern void pm_runtime_init(struct device *dev);
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extern void pm_runtime_reinit(struct device *dev);
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extern void pm_runtime_remove(struct device *dev);
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extern u64 pm_runtime_active_time(struct device *dev);
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#define WAKE_IRQ_DEDICATED_ALLOCATED BIT(0)
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#define WAKE_IRQ_DEDICATED_MANAGED BIT(1)
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#define WAKE_IRQ_DEDICATED_MASK (WAKE_IRQ_DEDICATED_ALLOCATED | \
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WAKE_IRQ_DEDICATED_MANAGED)
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struct wake_irq {
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struct device *dev;
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unsigned int status;
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int irq;
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const char *name;
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};
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extern void dev_pm_arm_wake_irq(struct wake_irq *wirq);
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extern void dev_pm_disarm_wake_irq(struct wake_irq *wirq);
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extern void dev_pm_enable_wake_irq_check(struct device *dev,
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bool can_change_status);
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extern void dev_pm_disable_wake_irq_check(struct device *dev);
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#ifdef CONFIG_PM_SLEEP
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extern void device_wakeup_attach_irq(struct device *dev, struct wake_irq *wakeirq);
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extern void device_wakeup_detach_irq(struct device *dev);
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extern void device_wakeup_arm_wake_irqs(void);
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extern void device_wakeup_disarm_wake_irqs(void);
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#else
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static inline void device_wakeup_attach_irq(struct device *dev,
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struct wake_irq *wakeirq) {}
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static inline void device_wakeup_detach_irq(struct device *dev)
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{
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}
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#endif /* CONFIG_PM_SLEEP */
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/*
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* sysfs.c
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*/
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extern int dpm_sysfs_add(struct device *dev);
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extern void dpm_sysfs_remove(struct device *dev);
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extern void rpm_sysfs_remove(struct device *dev);
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extern int wakeup_sysfs_add(struct device *dev);
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extern void wakeup_sysfs_remove(struct device *dev);
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extern int pm_qos_sysfs_add_resume_latency(struct device *dev);
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extern void pm_qos_sysfs_remove_resume_latency(struct device *dev);
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extern int pm_qos_sysfs_add_flags(struct device *dev);
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extern void pm_qos_sysfs_remove_flags(struct device *dev);
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extern int pm_qos_sysfs_add_latency_tolerance(struct device *dev);
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extern void pm_qos_sysfs_remove_latency_tolerance(struct device *dev);
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extern int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid, kgid_t kgid);
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#else /* CONFIG_PM */
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static inline void pm_runtime_early_init(struct device *dev)
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{
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device_pm_init_common(dev);
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}
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static inline void pm_runtime_init(struct device *dev) {}
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static inline void pm_runtime_reinit(struct device *dev) {}
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static inline void pm_runtime_remove(struct device *dev) {}
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static inline int dpm_sysfs_add(struct device *dev) { return 0; }
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static inline void dpm_sysfs_remove(struct device *dev) {}
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static inline int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid,
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kgid_t kgid) { return 0; }
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#endif
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#ifdef CONFIG_PM_SLEEP
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/* kernel/power/main.c */
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extern int pm_async_enabled;
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/* drivers/base/power/main.c */
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extern struct list_head dpm_list; /* The active device list */
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static inline struct device *to_device(struct list_head *entry)
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{
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return container_of(entry, struct device, power.entry);
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}
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extern void device_pm_sleep_init(struct device *dev);
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extern void device_pm_add(struct device *);
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extern void device_pm_remove(struct device *);
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extern void device_pm_move_before(struct device *, struct device *);
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extern void device_pm_move_after(struct device *, struct device *);
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extern void device_pm_move_last(struct device *);
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extern void device_pm_check_callbacks(struct device *dev);
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static inline bool device_pm_initialized(struct device *dev)
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{
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return dev->power.in_dpm_list;
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}
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/* drivers/base/power/wakeup_stats.c */
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extern int wakeup_source_sysfs_add(struct device *parent,
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struct wakeup_source *ws);
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extern void wakeup_source_sysfs_remove(struct wakeup_source *ws);
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extern int pm_wakeup_source_sysfs_add(struct device *parent);
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#else /* !CONFIG_PM_SLEEP */
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static inline void device_pm_sleep_init(struct device *dev) {}
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static inline void device_pm_add(struct device *dev) {}
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static inline void device_pm_remove(struct device *dev)
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{
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pm_runtime_remove(dev);
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}
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static inline void device_pm_move_before(struct device *deva,
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struct device *devb) {}
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static inline void device_pm_move_after(struct device *deva,
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struct device *devb) {}
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static inline void device_pm_move_last(struct device *dev) {}
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static inline void device_pm_check_callbacks(struct device *dev) {}
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static inline bool device_pm_initialized(struct device *dev)
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{
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return device_is_registered(dev);
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}
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static inline int pm_wakeup_source_sysfs_add(struct device *parent)
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{
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return 0;
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}
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#endif /* !CONFIG_PM_SLEEP */
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static inline void device_pm_init(struct device *dev)
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{
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device_pm_init_common(dev);
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device_pm_sleep_init(dev);
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pm_runtime_init(dev);
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}
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