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Commit 3a607992 authored by Peter Zijlstra (Intel)'s avatar Peter Zijlstra (Intel) Committed by Paul E. McKenney
Browse files

rcu: Make rcu_idle_enter() rely on callers disabling irqs 



All callers to rcu_idle_enter() have irqs disabled, so there is no
point in rcu_idle_enter disabling them again.  This commit therefore
replaces the irq disabling with a RCU_LOCKDEP_WARN().

Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent 2dee9404

kernel/rcu/tree.c

+1 −4
Original line number Diff line number Diff line
@@ -843,11 +843,8 @@ static void rcu_eqs_enter(bool user) 
 */

void rcu_idle_enter(void)

{

	unsigned long flags;



	local_irq_save(flags);

	RCU_LOCKDEP_WARN(!irqs_disabled(), "rcu_idle_enter() invoked with irqs enabled!!!");

	rcu_eqs_enter(false);

	local_irq_restore(flags);

}

EXPORT_SYMBOL_GPL(rcu_idle_enter);