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Commit 914955e1 authored by Paul E. McKenney's avatar Paul E. McKenney
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rcu: Stop duplicating lockdep checks in RCU's idle-entry code 



The three RCU_LOCKDEP_WARN() calls in rcu_eqs_enter_common() are
redundant with other lockdep checks, so this commit removes them.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent dec98900

kernel/rcu/tree.c

+0 −11
Original line number Diff line number Diff line
@@ -781,17 +781,6 @@ static void rcu_eqs_enter_common(bool user) 
	rdtp->dynticks_nesting = 0;

	rcu_dynticks_eqs_enter();

	rcu_dynticks_task_enter();



	/*

	 * It is illegal to enter an extended quiescent state while

	 * in an RCU read-side critical section.

	 */

	RCU_LOCKDEP_WARN(lock_is_held(&rcu_lock_map),

			 "Illegal idle entry in RCU read-side critical section.");

	RCU_LOCKDEP_WARN(lock_is_held(&rcu_bh_lock_map),

			 "Illegal idle entry in RCU-bh read-side critical section.");

	RCU_LOCKDEP_WARN(lock_is_held(&rcu_sched_lock_map),

			 "Illegal idle entry in RCU-sched read-side critical section.");

}



/*