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Commit fe8e6407 authored by Amerigo Wang's avatar Amerigo Wang Committed by Paul E. McKenney
Browse files

rcupdate: remove dead code 



DEBUG_OBJECTS_RCU_HEAD depends on PREEMPT, so #ifndef CONFIG_PREEMPT
is totally useless in kernel/rcupdate.c.

Signed-off-by: default avatarWANG Cong <amwang@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent fea65126

kernel/rcupdate.c

+0 −5
Original line number Diff line number Diff line
@@ -215,10 +215,6 @@ static int rcuhead_fixup_free(void *addr, enum debug_obj_state state) 
		 * If we detect that we are nested in a RCU read-side critical

		 * section, we should simply fail, otherwise we would deadlock.

		 */

#ifndef CONFIG_PREEMPT

		WARN_ON(1);

		return 0;

#else

		if (rcu_preempt_depth() != 0 || preempt_count() != 0 ||

		    irqs_disabled()) {

			WARN_ON(1);
@@ -229,7 +225,6 @@ static int rcuhead_fixup_free(void *addr, enum debug_obj_state state) 
		rcu_barrier_bh();

		debug_object_free(head, &rcuhead_debug_descr);

		return 1;

#endif

	default:

		return 0;

	}