diff options
Diffstat (limited to 'include/linux/tick.h')
| -rw-r--r-- | include/linux/tick.h | 99 |
1 files changed, 94 insertions, 5 deletions
diff --git a/include/linux/tick.h b/include/linux/tick.h index 97fd4e543..62be0786d 100644 --- a/include/linux/tick.h +++ b/include/linux/tick.h @@ -97,8 +97,21 @@ static inline void tick_broadcast_exit(void) tick_broadcast_oneshot_control(TICK_BROADCAST_EXIT); } +enum tick_dep_bits { + TICK_DEP_BIT_POSIX_TIMER = 0, + TICK_DEP_BIT_PERF_EVENTS = 1, + TICK_DEP_BIT_SCHED = 2, + TICK_DEP_BIT_CLOCK_UNSTABLE = 3 +}; + +#define TICK_DEP_MASK_NONE 0 +#define TICK_DEP_MASK_POSIX_TIMER (1 << TICK_DEP_BIT_POSIX_TIMER) +#define TICK_DEP_MASK_PERF_EVENTS (1 << TICK_DEP_BIT_PERF_EVENTS) +#define TICK_DEP_MASK_SCHED (1 << TICK_DEP_BIT_SCHED) +#define TICK_DEP_MASK_CLOCK_UNSTABLE (1 << TICK_DEP_BIT_CLOCK_UNSTABLE) + #ifdef CONFIG_NO_HZ_COMMON -extern int tick_nohz_enabled; +extern bool tick_nohz_enabled; extern int tick_nohz_tick_stopped(void); extern void tick_nohz_idle_enter(void); extern void tick_nohz_idle_exit(void); @@ -154,9 +167,73 @@ static inline int housekeeping_any_cpu(void) return cpumask_any_and(housekeeping_mask, cpu_online_mask); } -extern void tick_nohz_full_kick(void); +extern void tick_nohz_dep_set(enum tick_dep_bits bit); +extern void tick_nohz_dep_clear(enum tick_dep_bits bit); +extern void tick_nohz_dep_set_cpu(int cpu, enum tick_dep_bits bit); +extern void tick_nohz_dep_clear_cpu(int cpu, enum tick_dep_bits bit); +extern void tick_nohz_dep_set_task(struct task_struct *tsk, + enum tick_dep_bits bit); +extern void tick_nohz_dep_clear_task(struct task_struct *tsk, + enum tick_dep_bits bit); +extern void tick_nohz_dep_set_signal(struct signal_struct *signal, + enum tick_dep_bits bit); +extern void tick_nohz_dep_clear_signal(struct signal_struct *signal, + enum tick_dep_bits bit); + +/* + * The below are tick_nohz_[set,clear]_dep() wrappers that optimize off-cases + * on top of static keys. + */ +static inline void tick_dep_set(enum tick_dep_bits bit) +{ + if (tick_nohz_full_enabled()) + tick_nohz_dep_set(bit); +} + +static inline void tick_dep_clear(enum tick_dep_bits bit) +{ + if (tick_nohz_full_enabled()) + tick_nohz_dep_clear(bit); +} + +static inline void tick_dep_set_cpu(int cpu, enum tick_dep_bits bit) +{ + if (tick_nohz_full_cpu(cpu)) + tick_nohz_dep_set_cpu(cpu, bit); +} + +static inline void tick_dep_clear_cpu(int cpu, enum tick_dep_bits bit) +{ + if (tick_nohz_full_cpu(cpu)) + tick_nohz_dep_clear_cpu(cpu, bit); +} + +static inline void tick_dep_set_task(struct task_struct *tsk, + enum tick_dep_bits bit) +{ + if (tick_nohz_full_enabled()) + tick_nohz_dep_set_task(tsk, bit); +} +static inline void tick_dep_clear_task(struct task_struct *tsk, + enum tick_dep_bits bit) +{ + if (tick_nohz_full_enabled()) + tick_nohz_dep_clear_task(tsk, bit); +} +static inline void tick_dep_set_signal(struct signal_struct *signal, + enum tick_dep_bits bit) +{ + if (tick_nohz_full_enabled()) + tick_nohz_dep_set_signal(signal, bit); +} +static inline void tick_dep_clear_signal(struct signal_struct *signal, + enum tick_dep_bits bit) +{ + if (tick_nohz_full_enabled()) + tick_nohz_dep_clear_signal(signal, bit); +} + extern void tick_nohz_full_kick_cpu(int cpu); -extern void tick_nohz_full_kick_all(void); extern void __tick_nohz_task_switch(void); #else static inline int housekeeping_any_cpu(void) @@ -166,9 +243,21 @@ static inline int housekeeping_any_cpu(void) static inline bool tick_nohz_full_enabled(void) { return false; } static inline bool tick_nohz_full_cpu(int cpu) { return false; } static inline void tick_nohz_full_add_cpus_to(struct cpumask *mask) { } + +static inline void tick_dep_set(enum tick_dep_bits bit) { } +static inline void tick_dep_clear(enum tick_dep_bits bit) { } +static inline void tick_dep_set_cpu(int cpu, enum tick_dep_bits bit) { } +static inline void tick_dep_clear_cpu(int cpu, enum tick_dep_bits bit) { } +static inline void tick_dep_set_task(struct task_struct *tsk, + enum tick_dep_bits bit) { } +static inline void tick_dep_clear_task(struct task_struct *tsk, + enum tick_dep_bits bit) { } +static inline void tick_dep_set_signal(struct signal_struct *signal, + enum tick_dep_bits bit) { } +static inline void tick_dep_clear_signal(struct signal_struct *signal, + enum tick_dep_bits bit) { } + static inline void tick_nohz_full_kick_cpu(int cpu) { } -static inline void tick_nohz_full_kick(void) { } -static inline void tick_nohz_full_kick_all(void) { } static inline void __tick_nohz_task_switch(void) { } #endif |