rcu/tree: Export rcu_idle_{enter,exit} to modules

suryasaimadhu · rafaeljw · commit 3ad1c8ef083b · 2020-09-21T15:37:21.000+02:00
Fix this link error: ERROR: modpost: "rcu_idle_enter" [drivers/acpi/processor.ko] undefined! ERROR: modpost: "rcu_idle_exit" [drivers/acpi/processor.ko] undefined! when CONFIG_ACPI_PROCESSOR is built as module. PeterZ says that in light of ARM needing those soon too, they should simply be exported. Fixes: 1fecfdb ("ACPI: processor: Take over RCU-idle for C3-BM idle") Reported-by: Sven Joachim <svenjoac@gmx.de> Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Paul E. McKenney <paulmckrcu@kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
@@ -673,6 +673,7 @@ void rcu_idle_enter(void)
 	lockdep_assert_irqs_disabled();
 	rcu_eqs_enter(false);
 }
+EXPORT_SYMBOL_GPL(rcu_idle_enter);
 
 #ifdef CONFIG_NO_HZ_FULL
 /**
@@ -886,6 +887,7 @@ void rcu_idle_exit(void)
 	rcu_eqs_exit(false);
 	local_irq_restore(flags);
 }
+EXPORT_SYMBOL_GPL(rcu_idle_exit);
 
 #ifdef CONFIG_NO_HZ_FULL
 /**

Original file line number	Diff line number	Diff line change
`@@ -673,6 +673,7 @@ void rcu_idle_enter(void)`
`673`	`673`	`lockdep_assert_irqs_disabled();`
`674`	`674`	`rcu_eqs_enter(false);`
`675`	`675`	`}`
	`676`	`+EXPORT_SYMBOL_GPL(rcu_idle_enter);`
`676`	`677`
`677`	`678`	`#ifdef CONFIG_NO_HZ_FULL`
`678`	`679`	`/**`
`@@ -886,6 +887,7 @@ void rcu_idle_exit(void)`
`886`	`887`	`rcu_eqs_exit(false);`
`887`	`888`	`local_irq_restore(flags);`
`888`	`889`	`}`
	`890`	`+EXPORT_SYMBOL_GPL(rcu_idle_exit);`
`889`	`891`
`890`	`892`	`#ifdef CONFIG_NO_HZ_FULL`
`891`	`893`	`/**`