From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932163Ab2BATnI (ORCPT ); Wed, 1 Feb 2012 14:43:08 -0500 Received: from e31.co.us.ibm.com ([32.97.110.149]:40482 "EHLO e31.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756774Ab2BATnC (ORCPT ); Wed, 1 Feb 2012 14:43:02 -0500 From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@elte.hu, laijs@cn.fujitsu.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@polymtl.ca, josh@joshtriplett.org, niv@us.ibm.com, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, Valdis.Kletnieks@vt.edu, dhowells@redhat.com, eric.dumazet@gmail.com, darren@dvhart.com, fweisbec@gmail.com, patches@linaro.org, "Paul E. McKenney" , "Paul E. McKenney" , Martin Schwidefsky , Heiko Carstens Subject: [PATCH RFC tip/core/rcu 07/41] s390: Convert call_rcu() to kfree_rcu() Date: Wed, 1 Feb 2012 11:41:25 -0800 Message-Id: <1328125319-5205-7-git-send-email-paulmck@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.8 In-Reply-To: <1328125319-5205-1-git-send-email-paulmck@linux.vnet.ibm.com> References: <20120201194131.GA10028@linux.vnet.ibm.com> <1328125319-5205-1-git-send-email-paulmck@linux.vnet.ibm.com> X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12020119-7282-0000-0000-0000061F2587 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Paul E. McKenney" 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: Paul E. McKenney Signed-off-by: Paul E. McKenney Cc: Martin Schwidefsky Cc: Heiko Carstens --- arch/s390/kernel/irq.c | 9 +-------- 1 files changed, 1 insertions(+), 8 deletions(-) diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index b9a7fdd..e30b2df 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -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; -- 1.7.8