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Commit bc399d6e authored by Paul E. McKenney's avatar Paul E. McKenney Committed by Paul E. McKenney
Browse files

s390: Convert call_rcu() to kfree_rcu(), drop ext_int_hash_update() 



The call_rcu() in unregister_external_interrupt() invokes
ext_int_hash_update(), which just does a kfree().  Convert the
call_rcu() to kfree_rcu(), allowing ext_int_hash_update() to
be eliminated.

Signed-off-by: default avatarPaul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
parent 5c8806a0

arch/s390/kernel/irq.c

+1 −8
Original line number Diff line number Diff line
@@ -165,13 +165,6 @@ static inline int ext_hash(u16 code) 
	return (code + (code >> 9)) & 0xff;

}



static void ext_int_hash_update(struct rcu_head *head)

{

	struct ext_int_info *p = container_of(head, struct ext_int_info, rcu);



	kfree(p);

}



int register_external_interrupt(u16 code, ext_int_handler_t handler)

{

	struct ext_int_info *p;
@@ -202,7 +195,7 @@ int unregister_external_interrupt(u16 code, ext_int_handler_t handler) 
	list_for_each_entry_rcu(p, &ext_int_hash[index], entry)

		if (p->code == code && p->handler == handler) {

			list_del_rcu(&p->entry);

			call_rcu(&p->rcu, ext_int_hash_update);

			kfree_rcu(p, rcu);

		}

	spin_unlock_irqrestore(&ext_int_hash_lock, flags);

	return 0;