rk3568 rt init

hc

2023-11-06 e3e12f52b214121840b44c91de5b3e5af5d3eb84

 kernel/kernel/rcu/tree.h
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@@ -413,7 +413,9 @@
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  */
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 extern struct rcu_state rcu_sched_state;
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+#ifndef CONFIG_PREEMPT_RT_FULL
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 extern struct rcu_state rcu_bh_state;
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+#endif
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 #ifdef CONFIG_PREEMPT_RCU
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 extern struct rcu_state rcu_preempt_state;
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@@ -421,12 +423,10 @@
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 int rcu_dynticks_snap(struct rcu_dynticks *rdtp);
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-#ifdef CONFIG_RCU_BOOST
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 DECLARE_PER_CPU(unsigned int, rcu_cpu_kthread_status);
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 DECLARE_PER_CPU(int, rcu_cpu_kthread_cpu);
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 DECLARE_PER_CPU(unsigned int, rcu_cpu_kthread_loops);
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 DECLARE_PER_CPU(char, rcu_cpu_has_work);
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-#endif /* #ifdef CONFIG_RCU_BOOST */
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 #ifndef RCU_TREE_NONCORE
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@@ -449,8 +449,8 @@
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 			    int ncheck);
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 static void rcu_initiate_boost(struct rcu_node *rnp, unsigned long flags);
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 static void rcu_preempt_boost_start_gp(struct rcu_node *rnp);
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-static void invoke_rcu_callbacks_kthread(void);
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 static bool rcu_is_callbacks_kthread(void);
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+static void rcu_cpu_kthread_setup(unsigned int cpu);
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 #ifdef CONFIG_RCU_BOOST
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 static int rcu_spawn_one_boost_kthread(struct rcu_state *rsp,
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 						 struct rcu_node *rnp);