kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/include/linux/rcupdate.h
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@@ -54,11 +54,6 @@
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  * types of kernel builds, the rcu_read_lock() nesting depth is unknowable.
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  */
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 #define rcu_preempt_depth() (current->rcu_read_lock_nesting)
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-#ifndef CONFIG_PREEMPT_RT
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-#define sched_rcu_preempt_depth()	rcu_preempt_depth()
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-#else
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-static inline int sched_rcu_preempt_depth(void) { return 0; }
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-#endif
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 #else /* #ifdef CONFIG_PREEMPT_RCU */
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@@ -83,8 +78,6 @@
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 {
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 	return 0;
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 }
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-
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-#define sched_rcu_preempt_depth()	rcu_preempt_depth()
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 #endif /* #else #ifdef CONFIG_PREEMPT_RCU */
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@@ -336,8 +329,7 @@
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 #define rcu_sleep_check()						\
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 	do {								\
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 		rcu_preempt_sleep_check();				\
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-		if (!IS_ENABLED(CONFIG_PREEMPT_RT))			\
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-		    RCU_LOCKDEP_WARN(lock_is_held(&rcu_bh_lock_map),	\
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+		RCU_LOCKDEP_WARN(lock_is_held(&rcu_bh_lock_map),	\
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 				 "Illegal context switch in RCU-bh read-side critical section"); \
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 		RCU_LOCKDEP_WARN(lock_is_held(&rcu_sched_lock_map),	\
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 				 "Illegal context switch in RCU-sched read-side critical section"); \