diff options
| -rw-r--r-- | drivers/base/power/clock_ops.c | 69 | ||||
| -rw-r--r-- | drivers/base/power/domain.c | 34 | ||||
| -rw-r--r-- | drivers/base/power/domain_governor.c | 11 | ||||
| -rw-r--r-- | drivers/base/power/power.h | 56 | ||||
| -rw-r--r-- | drivers/base/power/qos.c | 5 | ||||
| -rw-r--r-- | drivers/base/power/runtime.c | 9 | ||||
| -rw-r--r-- | drivers/base/power/sysfs.c | 19 | ||||
| -rw-r--r-- | include/linux/pm.h | 2 | ||||
| -rw-r--r-- | include/linux/pm_domain.h | 8 | ||||
| -rw-r--r-- | include/linux/pm_qos.h | 38 | ||||
| -rw-r--r-- | include/linux/pm_runtime.h | 21 | ||||
| -rw-r--r-- | kernel/power/Kconfig | 4 |
12 files changed, 60 insertions, 216 deletions
diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c index b32b5d47b3c5..d626576a4f75 100644 --- a/drivers/base/power/clock_ops.c +++ b/drivers/base/power/clock_ops.c @@ -256,10 +256,6 @@ void pm_clk_destroy(struct device *dev) } } -#endif /* CONFIG_PM */ - -#ifdef CONFIG_PM_RUNTIME - /** * pm_clk_suspend - Disable clocks in a device's PM clock list. * @dev: Device to disable the clocks for. @@ -373,68 +369,7 @@ static int pm_clk_notify(struct notifier_block *nb, return 0; } -#else /* !CONFIG_PM_RUNTIME */ - -#ifdef CONFIG_PM - -/** - * pm_clk_suspend - Disable clocks in a device's PM clock list. - * @dev: Device to disable the clocks for. - */ -int pm_clk_suspend(struct device *dev) -{ - struct pm_subsys_data *psd = dev_to_psd(dev); - struct pm_clock_entry *ce; - unsigned long flags; - - dev_dbg(dev, "%s()\n", __func__); - - /* If there is no driver, the clocks are already disabled. */ - if (!psd || !dev->driver) - return 0; - - spin_lock_irqsave(&psd->lock, flags); - - list_for_each_entry_reverse(ce, &psd->clock_list, node) { - if (ce->status < PCE_STATUS_ERROR) { - if (ce->status == PCE_STATUS_ENABLED) - clk_disable(ce->clk); - ce->status = PCE_STATUS_ACQUIRED; - } - } - - spin_unlock_irqrestore(&psd->lock, flags); - - return 0; -} - -/** - * pm_clk_resume - Enable clocks in a device's PM clock list. - * @dev: Device to enable the clocks for. - */ -int pm_clk_resume(struct device *dev) -{ - struct pm_subsys_data *psd = dev_to_psd(dev); - struct pm_clock_entry *ce; - unsigned long flags; - - dev_dbg(dev, "%s()\n", __func__); - - /* If there is no driver, the clocks should remain disabled. */ - if (!psd || !dev->driver) - return 0; - - spin_lock_irqsave(&psd->lock, flags); - - list_for_each_entry(ce, &psd->clock_list, node) - __pm_clk_enable(dev, ce); - - spin_unlock_irqrestore(&psd->lock, flags); - - return 0; -} - -#endif /* CONFIG_PM */ +#else /* !CONFIG_PM */ /** * enable_clock - Enable a device clock. @@ -514,7 +449,7 @@ static int pm_clk_notify(struct notifier_block *nb, return 0; } -#endif /* !CONFIG_PM_RUNTIME */ +#endif /* !CONFIG_PM */ /** * pm_clk_add_notifier - Add bus type notifier for power management clocks. diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index fb83d4acd400..7c5c7410d76c 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -280,8 +280,6 @@ int pm_genpd_name_poweron(const char *domain_name) return genpd ? pm_genpd_poweron(genpd) : -EINVAL; } -#ifdef CONFIG_PM_RUNTIME - static int genpd_start_dev_no_timing(struct generic_pm_domain *genpd, struct device *dev) { @@ -755,24 +753,6 @@ static int __init genpd_poweroff_unused(void) } late_initcall(genpd_poweroff_unused); -#else - -static inline int genpd_dev_pm_qos_notifier(struct notifier_block *nb, - unsigned long val, void *ptr) -{ - return NOTIFY_DONE; -} - -static inline void -genpd_queue_power_off_work(struct generic_pm_domain *genpd) {} - -static inline void genpd_power_off_work_fn(struct work_struct *work) {} - -#define pm_genpd_runtime_suspend NULL -#define pm_genpd_runtime_resume NULL - -#endif /* CONFIG_PM_RUNTIME */ - #ifdef CONFIG_PM_SLEEP /** @@ -1364,7 +1344,7 @@ void pm_genpd_syscore_poweron(struct device *dev) } EXPORT_SYMBOL_GPL(pm_genpd_syscore_poweron); -#else +#else /* !CONFIG_PM_SLEEP */ #define pm_genpd_prepare NULL #define pm_genpd_suspend NULL @@ -2220,7 +2200,7 @@ int genpd_dev_pm_attach(struct device *dev) return 0; } EXPORT_SYMBOL_GPL(genpd_dev_pm_attach); -#endif +#endif /* CONFIG_PM_GENERIC_DOMAINS_OF */ /*** debugfs support ***/ @@ -2236,10 +2216,8 @@ static struct dentry *pm_genpd_debugfs_dir; /* * TODO: This function is a slightly modified version of rtpm_status_show - * from sysfs.c, but dependencies between PM_GENERIC_DOMAINS and PM_RUNTIME - * are too loose to generalize it. + * from sysfs.c, so generalize it. */ -#ifdef CONFIG_PM_RUNTIME static void rtpm_status_str(struct seq_file *s, struct device *dev) { static const char * const status_lookup[] = { @@ -2261,12 +2239,6 @@ static void rtpm_status_str(struct seq_file *s, struct device *dev) seq_puts(s, p); } -#else -static void rtpm_status_str(struct seq_file *s, struct device *dev) -{ - seq_puts(s, "active"); -} -#endif static int pm_genpd_summary_one(struct seq_file *s, struct generic_pm_domain *gpd) diff --git a/drivers/base/power/domain_governor.c b/drivers/base/power/domain_governor.c index d88a62e104d4..2a4154a09e4d 100644 --- a/drivers/base/power/domain_governor.c +++ b/drivers/base/power/domain_governor.c @@ -11,8 +11,6 @@ #include <linux/pm_qos.h> #include <linux/hrtimer.h> -#ifdef CONFIG_PM_RUNTIME - static int dev_update_qos_constraint(struct device *dev, void *data) { s64 *constraint_ns_p = data; @@ -227,15 +225,6 @@ static bool always_on_power_down_ok(struct dev_pm_domain *domain) return false; } -#else /* !CONFIG_PM_RUNTIME */ - -static inline bool default_stop_ok(struct device *dev) { return false; } - -#define default_power_down_ok NULL -#define always_on_power_down_ok NULL - -#endif /* !CONFIG_PM_RUNTIME */ - struct dev_power_governor simple_qos_governor = { .stop_ok = default_stop_ok, .power_down_ok = default_power_down_ok, diff --git a/drivers/base/power/power.h b/drivers/base/power/power.h index a21223d95926..b6b8a273c5da 100644 --- a/drivers/base/power/power.h +++ b/drivers/base/power/power.h @@ -9,7 +9,7 @@ static inline void device_pm_init_common(struct device *dev) } } -#ifdef CONFIG_PM_RUNTIME +#ifdef CONFIG_PM static inline void pm_runtime_early_init(struct device *dev) { @@ -20,7 +20,21 @@ static inline void pm_runtime_early_init(struct device *dev) extern void pm_runtime_init(struct device *dev); extern void pm_runtime_remove(struct device *dev); -#else /* !CONFIG_PM_RUNTIME */ +/* + * sysfs.c + */ + +extern int dpm_sysfs_add(struct device *dev); +extern void dpm_sysfs_remove(struct device *dev); +extern void rpm_sysfs_remove(struct device *dev); +extern int wakeup_sysfs_add(struct device *dev); +extern void wakeup_sysfs_remove(struct device *dev); +extern int pm_qos_sysfs_add_resume_latency(struct device *dev); +extern void pm_qos_sysfs_remove_resume_latency(struct device *dev); +extern int pm_qos_sysfs_add_flags(struct device *dev); +extern void pm_qos_sysfs_remove_flags(struct device *dev); + +#else /* CONFIG_PM */ static inline void pm_runtime_early_init(struct device *dev) { @@ -30,7 +44,15 @@ static inline void pm_runtime_early_init(struct device *dev) static inline void pm_runtime_init(struct device *dev) {} static inline void pm_runtime_remove(struct device *dev) {} -#endif /* !CONFIG_PM_RUNTIME */ +static inline int dpm_sysfs_add(struct device *dev) { return 0; } +static inline void dpm_sysfs_remove(struct device *dev) {} +static inline void rpm_sysfs_remove(struct device *dev) {} +static inline int wakeup_sysfs_add(struct device *dev) { return 0; } +static inline void wakeup_sysfs_remove(struct device *dev) {} +static inline int pm_qos_sysfs_add(struct device *dev) { return 0; } +static inline void pm_qos_sysfs_remove(struct device *dev) {} + +#endif #ifdef CONFIG_PM_SLEEP @@ -77,31 +99,3 @@ static inline void device_pm_init(struct device *dev) device_pm_sleep_init(dev); pm_runtime_init(dev); } - -#ifdef CONFIG_PM - -/* - * sysfs.c - */ - -extern int dpm_sysfs_add(struct device *dev); -extern void dpm_sysfs_remove(struct device *dev); -extern void rpm_sysfs_remove(struct device *dev); -extern int wakeup_sysfs_add(struct device *dev); -extern void wakeup_sysfs_remove(struct device *dev); -extern int pm_qos_sysfs_add_resume_latency(struct device *dev); -extern void pm_qos_sysfs_remove_resume_latency(struct device *dev); -extern int pm_qos_sysfs_add_flags(struct device *dev); -extern void pm_qos_sysfs_remove_flags(struct device *dev); - -#else /* CONFIG_PM */ - -static inline int dpm_sysfs_add(struct device *dev) { return 0; } -static inline void dpm_sysfs_remove(struct device *dev) {} -static inline void rpm_sysfs_remove(struct device *dev) {} -static inline int wakeup_sysfs_add(struct device *dev) { return 0; } -static inline void wakeup_sysfs_remove(struct device *dev) {} -static inline int pm_qos_sysfs_add(struct device *dev) { return 0; } -static inline void pm_qos_sysfs_remove(struct device *dev) {} - -#endif diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index 36b9eb4862cb..a8fe4c1a8d07 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -599,7 +599,6 @@ int dev_pm_qos_add_ancestor_request(struct device *dev, } EXPORT_SYMBOL_GPL(dev_pm_qos_add_ancestor_request); -#ifdef CONFIG_PM_RUNTIME static void __dev_pm_qos_drop_user_request(struct device *dev, enum dev_pm_qos_req_type type) { @@ -880,7 +879,3 @@ int dev_pm_qos_update_user_latency_tolerance(struct device *dev, s32 val) mutex_unlock(&dev_pm_qos_mtx); return ret; } -#else /* !CONFIG_PM_RUNTIME */ -static void __dev_pm_qos_hide_latency_limit(struct device *dev) {} -static void __dev_pm_qos_hide_flags(struct device *dev) {} -#endif /* CONFIG_PM_RUNTIME */ diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index 8f1ab8446caa..5070c4fe8542 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -45,8 +45,6 @@ static pm_callback_t __rpm_get_callback(struct device *dev, size_t cb_offset) #define RPM_GET_CALLBACK(dev, callback) \ __rpm_get_callback(dev, offsetof(struct dev_pm_ops, callback)) -#ifdef CONFIG_PM_RUNTIME - static int rpm_resume(struct device *dev, int rpmflags); static int rpm_suspend(struct device *dev, int rpmflags); @@ -1399,7 +1397,6 @@ void pm_runtime_remove(struct device *dev) if (dev->power.irq_safe && dev->parent) pm_runtime_put(dev->parent); } -#endif /** * pm_runtime_force_suspend - Force a device into suspend state if needed. @@ -1419,12 +1416,6 @@ int pm_runtime_force_suspend(struct device *dev) int ret = 0; pm_runtime_disable(dev); - - /* - * Note that pm_runtime_status_suspended() returns false while - * !CONFIG_PM_RUNTIME, which means the device will be put into low - * power state. - */ if (pm_runtime_status_suspended(dev)) return 0; diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c index a9d26ed11bf4..d2be3f9c211c 100644 --- a/drivers/base/power/sysfs.c +++ b/drivers/base/power/sysfs.c @@ -95,7 +95,6 @@ const char power_group_name[] = "power"; EXPORT_SYMBOL_GPL(power_group_name); -#ifdef CONFIG_PM_RUNTIME static const char ctrl_auto[] = "auto"; static const char ctrl_on[] = "on"; @@ -330,7 +329,6 @@ static ssize_t pm_qos_remote_wakeup_store(struct device *dev, static DEVICE_ATTR(pm_qos_remote_wakeup, 0644, pm_qos_remote_wakeup_show, pm_qos_remote_wakeup_store); -#endif /* CONFIG_PM_RUNTIME */ #ifdef CONFIG_PM_SLEEP static const char _enabled[] = "enabled"; @@ -531,8 +529,6 @@ static DEVICE_ATTR(wakeup_prevent_sleep_time_ms, 0444, #endif /* CONFIG_PM_SLEEP */ #ifdef CONFIG_PM_ADVANCED_DEBUG -#ifdef CONFIG_PM_RUNTIME - static ssize_t rtpm_usagecount_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -562,10 +558,7 @@ static DEVICE_ATTR(runtime_usage, 0444, rtpm_usagecount_show, NULL); static DEVICE_ATTR(runtime_active_kids, 0444, rtpm_children_show, NULL); static DEVICE_ATTR(runtime_enabled, 0444, rtpm_enabled_show, NULL); -#endif - #ifdef CONFIG_PM_SLEEP - static ssize_t async_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -595,7 +588,7 @@ static ssize_t async_store(struct device *dev, struct device_attribute *attr, static DEVICE_ATTR(async, 0644, async_show, async_store); -#endif +#endif /* CONFIG_PM_SLEEP */ #endif /* CONFIG_PM_ADVANCED_DEBUG */ static struct attribute *power_attrs[] = { @@ -603,12 +596,10 @@ static struct attribute *power_attrs[] = { #ifdef CONFIG_PM_SLEEP &dev_attr_async.attr, #endif -#ifdef CONFIG_PM_RUNTIME &dev_attr_runtime_status.attr, &dev_attr_runtime_usage.attr, &dev_attr_runtime_active_kids.attr, &dev_attr_runtime_enabled.attr, -#endif #endif /* CONFIG_PM_ADVANCED_DEBUG */ NULL, }; @@ -640,7 +631,6 @@ static struct attribute_group pm_wakeup_attr_group = { }; static struct attribute *runtime_attrs[] = { -#ifdef CONFIG_PM_RUNTIME #ifndef CONFIG_PM_ADVANCED_DEBUG &dev_attr_runtime_status.attr, #endif @@ -648,7 +638,6 @@ static struct attribute *runtime_attrs[] = { &dev_attr_runtime_suspended_time.attr, &dev_attr_runtime_active_time.attr, &dev_attr_autosuspend_delay_ms.attr, -#endif /* CONFIG_PM_RUNTIME */ NULL, }; static struct attribute_group pm_runtime_attr_group = { @@ -657,9 +646,7 @@ static struct attribute_group pm_runtime_attr_group = { }; static struct attribute *pm_qos_resume_latency_attrs[] = { -#ifdef CONFIG_PM_RUNTIME &dev_attr_pm_qos_resume_latency_us.attr, -#endif /* CONFIG_PM_RUNTIME */ NULL, }; static struct attribute_group pm_qos_resume_latency_attr_group = { @@ -668,9 +655,7 @@ static struct attribute_group pm_qos_resume_latency_attr_group = { }; static struct attribute *pm_qos_latency_tolerance_attrs[] = { -#ifdef CONFIG_PM_RUNTIME &dev_attr_pm_qos_latency_tolerance_us.attr, -#endif /* CONFIG_PM_RUNTIME */ NULL, }; static struct attribute_group pm_qos_latency_tolerance_attr_group = { @@ -679,10 +664,8 @@ static struct attribute_group pm_qos_latency_tolerance_attr_group = { }; static struct attribute *pm_qos_flags_attrs[] = { -#ifdef CONFIG_PM_RUNTIME &dev_attr_pm_qos_no_power_off.attr, &dev_attr_pm_qos_remote_wakeup.attr, -#endif /* CONFIG_PM_RUNTIME */ NULL, }; static struct attribute_group pm_qos_flags_attr_group = { diff --git a/include/linux/pm.h b/include/linux/pm.h index 383fd68aaee1..53b56cf5db3f 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -576,7 +576,7 @@ struct dev_pm_info { #else unsigned int should_wakeup:1; #endif -#ifdef CONFIG_PM_RUNTIME +#ifdef CONFIG_PM struct timer_list suspend_timer; unsigned long timer_expires; struct work_struct work; diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 2e0e06daf8c0..f9dedf2f4103 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -147,6 +147,7 @@ extern void pm_genpd_init(struct generic_pm_domain *genpd, extern int pm_genpd_poweron(struct generic_pm_domain *genpd); extern int pm_genpd_name_poweron(const char *domain_name); +extern void pm_genpd_poweroff_unused(void); extern struct dev_power_governor simple_qos_governor; extern struct dev_power_governor pm_domain_always_on_gov; @@ -221,6 +222,7 @@ static inline int pm_genpd_name_poweron(const char *domain_name) { return -ENOSYS; } +static inline void pm_genpd_poweroff_unused(void) {} #define simple_qos_governor NULL #define pm_domain_always_on_gov NULL #endif @@ -237,12 +239,6 @@ static inline int pm_genpd_name_add_device(const char *domain_name, return __pm_genpd_name_add_device(domain_name, dev, NULL); } -#ifdef CONFIG_PM_GENERIC_DOMAINS_RUNTIME -extern void pm_genpd_poweroff_unused(void); -#else -static inline void pm_genpd_poweroff_unused(void) {} -#endif - #ifdef CONFIG_PM_GENERIC_DOMAINS_SLEEP extern void pm_genpd_syscore_poweroff(struct device *dev); extern void pm_genpd_syscore_poweron(struct device *dev); diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 636e82834506..7b3ae0cffc05 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -154,6 +154,23 @@ void dev_pm_qos_constraints_destroy(struct device *dev); int dev_pm_qos_add_ancestor_request(struct device *dev, struct dev_pm_qos_request *req, enum dev_pm_qos_req_type type, s32 value); +int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value); +void dev_pm_qos_hide_latency_limit(struct device *dev); +int dev_pm_qos_expose_flags(struct device *dev, s32 value); +void dev_pm_qos_hide_flags(struct device *dev); +int dev_pm_qos_update_flags(struct device *dev, s32 mask, bool set); +s32 dev_pm_qos_get_user_latency_tolerance(struct device *dev); +int dev_pm_qos_update_user_latency_tolerance(struct device *dev, s32 val); + +static inline s32 dev_pm_qos_requested_resume_latency(struct device *dev) +{ + return dev->power.qos->resume_latency_req->data.pnode.prio; +} + +static inline s32 dev_pm_qos_requested_flags(struct device *dev) +{ + return dev->power.qos->flags_req->data.flr.flags; +} #else static inline enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, s32 mask) @@ -200,27 +217,6 @@ static inline int dev_pm_qos_add_ancestor_request(struct device *dev, enum dev_pm_qos_req_type type, s32 value) { return 0; } -#endif - -#ifdef CONFIG_PM_RUNTIME -int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value); -void dev_pm_qos_hide_latency_limit(struct device *dev); -int dev_pm_qos_expose_flags(struct device *dev, s32 value); -void dev_pm_qos_hide_flags(struct device *dev); -int dev_pm_qos_update_flags(struct device *dev, s32 mask, bool set); -s32 dev_pm_qos_get_user_latency_tolerance(struct device *dev); -int dev_pm_qos_update_user_latency_tolerance(struct device *dev, s32 val); - -static inline s32 dev_pm_qos_requested_resume_latency(struct device *dev) -{ - return dev->power.qos->resume_latency_req->data.pnode.prio; -} - -static inline s32 dev_pm_qos_requested_flags(struct device *dev) -{ - return dev->power.qos->flags_req->data.flr.flags; -} -#else static inline int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value) { return 0; } static inline void dev_pm_qos_hide_latency_limit(struct device *dev) {} diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index 367f49b9a1c9..eda4feede048 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -35,16 +35,6 @@ extern int pm_generic_runtime_suspend(struct device *dev); extern int pm_generic_runtime_resume(struct device *dev); extern int pm_runtime_force_suspend(struct device *dev); extern int pm_runtime_force_resume(struct device *dev); -#else -static inline bool queue_pm_work(struct work_struct *work) { return false; } - -static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; } -static inline int pm_generic_runtime_resume(struct device *dev) { return 0; } -static inline int pm_runtime_force_suspend(struct device *dev) { return 0; } -static inline int pm_runtime_force_resume(struct device *dev) { return 0; } -#endif - -#ifdef CONFIG_PM_RUNTIME extern int __pm_runtime_idle(struct device *dev, int rpmflags); extern int __pm_runtime_suspend(struct device *dev, int rpmflags); @@ -128,7 +118,14 @@ static inline void pm_runtime_mark_last_busy(struct device *dev) ACCESS_ONCE(dev->power.last_busy) = jiffies; } -#else /* !CONFIG_PM_RUNTIME */ +#else /* !CONFIG_PM */ + +static inline bool queue_pm_work(struct work_struct *work) { return false; } + +static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; } +static inline int pm_generic_runtime_resume(struct device *dev) { return 0; } +static inline int pm_runtime_force_suspend(struct device *dev) { return 0; } +static inline int pm_runtime_force_resume(struct device *dev) { return 0; } static inline int __pm_runtime_idle(struct device *dev, int rpmflags) { @@ -179,7 +176,7 @@ static inline unsigned long pm_runtime_autosuspend_expiration( static inline void pm_runtime_set_memalloc_noio(struct device *dev, bool enable){} -#endif /* !CONFIG_PM_RUNTIME */ +#endif /* !CONFIG_PM */ static inline int pm_runtime_idle(struct device *dev) { diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index 95d712e3677d..f8dc1cc8c4cb 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -298,10 +298,6 @@ config PM_GENERIC_DOMAINS_SLEEP def_bool y depends on PM_SLEEP && PM_GENERIC_DOMAINS -config PM_GENERIC_DOMAINS_RUNTIME - def_bool y - depends on PM_RUNTIME && PM_GENERIC_DOMAINS - config PM_GENERIC_DOMAINS_OF def_bool y depends on PM_GENERIC_DOMAINS && OF |