修改内核路径

hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/include/linux/tick.h
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@@ -68,6 +68,12 @@
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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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+#if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_HOTPLUG_CPU)
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+extern void tick_offline_cpu(unsigned int cpu);
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+#else
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+static inline void tick_offline_cpu(unsigned int cpu) { }
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+#endif
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+
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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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@@ -102,16 +108,19 @@
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 	TICK_DEP_BIT_POSIX_TIMER	= 0,
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 	TICK_DEP_BIT_PERF_EVENTS	= 1,
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 	TICK_DEP_BIT_SCHED		= 2,
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-	TICK_DEP_BIT_CLOCK_UNSTABLE	= 3
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+	TICK_DEP_BIT_CLOCK_UNSTABLE	= 3,
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+	TICK_DEP_BIT_RCU		= 4,
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+	TICK_DEP_BIT_RCU_EXP		= 5
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 };
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+#define TICK_DEP_BIT_MAX TICK_DEP_BIT_RCU_EXP
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 #define TICK_DEP_MASK_NONE		0
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 #define TICK_DEP_MASK_POSIX_TIMER	(1 << TICK_DEP_BIT_POSIX_TIMER)
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 #define TICK_DEP_MASK_PERF_EVENTS	(1 << TICK_DEP_BIT_PERF_EVENTS)
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 #define TICK_DEP_MASK_SCHED		(1 << TICK_DEP_BIT_SCHED)
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 #define TICK_DEP_MASK_CLOCK_UNSTABLE	(1 << TICK_DEP_BIT_CLOCK_UNSTABLE)
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-
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-extern void register_tick_sched_wakeup_callback(void (*cb)(void));
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+#define TICK_DEP_MASK_RCU		(1 << TICK_DEP_BIT_RCU)
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+#define TICK_DEP_MASK_RCU_EXP		(1 << TICK_DEP_BIT_RCU_EXP)
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 #ifdef CONFIG_NO_HZ_COMMON
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 extern bool tick_nohz_enabled;
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@@ -124,6 +133,7 @@
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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 bool tick_nohz_idle_got_tick(void);
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+extern ktime_t tick_nohz_get_next_hrtimer(void);
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 extern ktime_t tick_nohz_get_sleep_length(ktime_t *delta_next);
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 extern unsigned long tick_nohz_get_idle_calls(void);
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 extern unsigned long tick_nohz_get_idle_calls_cpu(int cpu);
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@@ -147,7 +157,11 @@
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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 bool tick_nohz_idle_got_tick(void) { return false; }
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-
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+static inline ktime_t tick_nohz_get_next_hrtimer(void)
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+{
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+	/* Next wake up is the tick period, assume it starts now */
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+	return ktime_add(ktime_get(), TICK_NSEC);
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+}
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 static inline ktime_t tick_nohz_get_sleep_length(ktime_t *delta_next)
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 {
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 	*delta_next = TICK_NSEC;
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@@ -165,7 +179,7 @@
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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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+	if (!context_tracking_enabled())
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 		return false;
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 	return tick_nohz_full_running;
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@@ -197,6 +211,7 @@
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 				     enum tick_dep_bits bit);
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 extern void tick_nohz_dep_clear_signal(struct signal_struct *signal,
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 				       enum tick_dep_bits bit);
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+extern bool tick_nohz_cpu_hotpluggable(unsigned int cpu);
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 /*
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  * The below are tick_nohz_[set,clear]_dep() wrappers that optimize off-cases
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@@ -259,6 +274,10 @@
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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_dep_set_cpu(int cpu, enum tick_dep_bits bit) { }
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+static inline void tick_nohz_dep_clear_cpu(int cpu, enum tick_dep_bits bit) { }
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+static inline bool tick_nohz_cpu_hotpluggable(unsigned int cpu) { return true; }
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+
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 static inline void tick_dep_set(enum tick_dep_bits bit) { }
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 static inline void tick_dep_clear(enum tick_dep_bits bit) { }
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 static inline void tick_dep_set_cpu(int cpu, enum tick_dep_bits bit) { }
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@@ -283,5 +302,4 @@
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 		__tick_nohz_task_switch();
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 }
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-ktime_t *get_next_event_cpu(unsigned int cpu);
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 #endif