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227 lines
6.3 KiB
227 lines
6.3 KiB
/* |
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* Tick related global functions |
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*/ |
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#ifndef _LINUX_TICK_H |
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#define _LINUX_TICK_H |
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#include <linux/clockchips.h> |
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#include <linux/irqflags.h> |
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#include <linux/percpu.h> |
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#include <linux/context_tracking_state.h> |
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#include <linux/cpumask.h> |
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#include <linux/sched.h> |
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#ifdef CONFIG_GENERIC_CLOCKEVENTS |
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extern void __init tick_init(void); |
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/* Should be core only, but ARM BL switcher requires it */ |
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extern void tick_suspend_local(void); |
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/* Should be core only, but XEN resume magic and ARM BL switcher require it */ |
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extern void tick_resume_local(void); |
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extern void tick_handover_do_timer(void); |
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extern void tick_cleanup_dead_cpu(int cpu); |
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#else /* CONFIG_GENERIC_CLOCKEVENTS */ |
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static inline void tick_init(void) { } |
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static inline void tick_suspend_local(void) { } |
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static inline void tick_resume_local(void) { } |
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static inline void tick_handover_do_timer(void) { } |
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static inline void tick_cleanup_dead_cpu(int cpu) { } |
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#endif /* !CONFIG_GENERIC_CLOCKEVENTS */ |
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#if defined(CONFIG_GENERIC_CLOCKEVENTS) && defined(CONFIG_SUSPEND) |
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extern void tick_freeze(void); |
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extern void tick_unfreeze(void); |
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#else |
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static inline void tick_freeze(void) { } |
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static inline void tick_unfreeze(void) { } |
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#endif |
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#ifdef CONFIG_TICK_ONESHOT |
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extern void tick_irq_enter(void); |
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# ifndef arch_needs_cpu |
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# define arch_needs_cpu() (0) |
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# endif |
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# else |
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static inline void tick_irq_enter(void) { } |
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#endif |
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#if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_TICK_ONESHOT) |
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extern void hotplug_cpu__broadcast_tick_pull(int dead_cpu); |
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#else |
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static inline void hotplug_cpu__broadcast_tick_pull(int dead_cpu) { } |
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#endif |
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enum tick_broadcast_mode { |
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TICK_BROADCAST_OFF, |
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TICK_BROADCAST_ON, |
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TICK_BROADCAST_FORCE, |
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}; |
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enum tick_broadcast_state { |
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TICK_BROADCAST_EXIT, |
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TICK_BROADCAST_ENTER, |
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}; |
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#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST |
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extern void tick_broadcast_control(enum tick_broadcast_mode mode); |
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#else |
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static inline void tick_broadcast_control(enum tick_broadcast_mode mode) { } |
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#endif /* BROADCAST */ |
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#ifdef CONFIG_GENERIC_CLOCKEVENTS |
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extern int tick_broadcast_oneshot_control(enum tick_broadcast_state state); |
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#else |
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static inline int tick_broadcast_oneshot_control(enum tick_broadcast_state state) |
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{ |
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return 0; |
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} |
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#endif |
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static inline void tick_broadcast_enable(void) |
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{ |
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tick_broadcast_control(TICK_BROADCAST_ON); |
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} |
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static inline void tick_broadcast_disable(void) |
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{ |
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tick_broadcast_control(TICK_BROADCAST_OFF); |
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} |
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static inline void tick_broadcast_force(void) |
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{ |
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tick_broadcast_control(TICK_BROADCAST_FORCE); |
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} |
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static inline int tick_broadcast_enter(void) |
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{ |
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return tick_broadcast_oneshot_control(TICK_BROADCAST_ENTER); |
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} |
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static inline void tick_broadcast_exit(void) |
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{ |
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tick_broadcast_oneshot_control(TICK_BROADCAST_EXIT); |
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} |
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#ifdef CONFIG_NO_HZ_COMMON |
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extern int tick_nohz_tick_stopped(void); |
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extern void tick_nohz_idle_enter(void); |
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extern void tick_nohz_idle_exit(void); |
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extern void tick_nohz_irq_exit(void); |
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extern ktime_t tick_nohz_get_sleep_length(void); |
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extern unsigned long tick_nohz_get_idle_calls(void); |
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extern u64 get_cpu_idle_time_us(int cpu, u64 *last_update_time); |
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extern u64 get_cpu_iowait_time_us(int cpu, u64 *last_update_time); |
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#ifdef CONFIG_MEDIATEK_SOLUTION |
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extern void tick_set_cpu_plugoff_flag(int flag); |
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extern u64 get_cpu_idle_time_us_wo_cpuoffline(int cpu, u64 *last_update_time); |
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extern u64 get_cpu_iowait_time_us_wo_cpuoffline(int cpu, u64 *last_update_time); |
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#endif |
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#else /* !CONFIG_NO_HZ_COMMON */ |
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static inline int tick_nohz_tick_stopped(void) { return 0; } |
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static inline void tick_nohz_idle_enter(void) { } |
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static inline void tick_nohz_idle_exit(void) { } |
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static inline ktime_t tick_nohz_get_sleep_length(void) |
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{ |
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ktime_t len = { .tv64 = NSEC_PER_SEC/HZ }; |
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return len; |
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} |
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static inline u64 get_cpu_idle_time_us(int cpu, u64 *unused) { return -1; } |
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static inline u64 get_cpu_iowait_time_us(int cpu, u64 *unused) { return -1; } |
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#ifdef CONFIG_MEDIATEK_SOLUTION |
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static inline void tick_set_cpu_plugoff_flag(int flag) { } |
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static inline u64 get_cpu_idle_time_us_wo_cpuoffline(int cpu, u64 *last_update_time) { return -1; } |
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static inline u64 get_cpu_iowait_time_us_wo_cpuoffline(int cpu, u64 *last_update_time) { return -1; } |
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#endif |
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#endif /* !CONFIG_NO_HZ_COMMON */ |
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#ifdef CONFIG_NO_HZ_FULL |
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extern bool tick_nohz_full_running; |
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extern cpumask_var_t tick_nohz_full_mask; |
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extern cpumask_var_t housekeeping_mask; |
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static inline bool tick_nohz_full_enabled(void) |
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{ |
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if (!context_tracking_is_enabled()) |
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return false; |
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return tick_nohz_full_running; |
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} |
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static inline bool tick_nohz_full_cpu(int cpu) |
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{ |
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if (!tick_nohz_full_enabled()) |
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return false; |
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return cpumask_test_cpu(cpu, tick_nohz_full_mask); |
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} |
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static inline void tick_nohz_full_add_cpus_to(struct cpumask *mask) |
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{ |
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if (tick_nohz_full_enabled()) |
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cpumask_or(mask, mask, tick_nohz_full_mask); |
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} |
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static inline int housekeeping_any_cpu(void) |
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{ |
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return cpumask_any_and(housekeeping_mask, cpu_online_mask); |
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} |
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extern void tick_nohz_full_kick(void); |
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extern void tick_nohz_full_kick_cpu(int cpu); |
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extern void tick_nohz_full_kick_all(void); |
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extern void __tick_nohz_task_switch(void); |
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#else |
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static inline int housekeeping_any_cpu(void) |
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{ |
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return smp_processor_id(); |
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} |
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static inline bool tick_nohz_full_enabled(void) { return false; } |
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static inline bool tick_nohz_full_cpu(int cpu) { return false; } |
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static inline void tick_nohz_full_add_cpus_to(struct cpumask *mask) { } |
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static inline void tick_nohz_full_kick_cpu(int cpu) { } |
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static inline void tick_nohz_full_kick(void) { } |
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static inline void tick_nohz_full_kick_all(void) { } |
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static inline void __tick_nohz_task_switch(void) { } |
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#endif |
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static inline const struct cpumask *housekeeping_cpumask(void) |
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{ |
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#ifdef CONFIG_NO_HZ_FULL |
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if (tick_nohz_full_enabled()) |
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return housekeeping_mask; |
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#endif |
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return cpu_possible_mask; |
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} |
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static inline bool is_housekeeping_cpu(int cpu) |
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{ |
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#ifdef CONFIG_NO_HZ_FULL |
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if (tick_nohz_full_enabled()) |
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return cpumask_test_cpu(cpu, housekeeping_mask); |
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#endif |
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return true; |
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} |
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static inline void housekeeping_affine(struct task_struct *t) |
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{ |
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#ifdef CONFIG_NO_HZ_FULL |
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if (tick_nohz_full_enabled()) |
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set_cpus_allowed_ptr(t, housekeeping_mask); |
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#endif |
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} |
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static inline void tick_nohz_task_switch(void) |
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{ |
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if (tick_nohz_full_enabled()) |
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__tick_nohz_task_switch(); |
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} |
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#if defined(CONFIG_TICK_ONESHOT) && defined(CONFIG_MTK_RAM_CONSOLE) |
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extern void tick_broadcast_mtk_aee_dump(void); |
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#else |
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static inline void tick_broadcast_mtk_aee_dump(void) { }; |
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#endif |
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#endif
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