From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760412Ab1EANhw (ORCPT ); Sun, 1 May 2011 09:37:52 -0400 Received: from e9.ny.us.ibm.com ([32.97.182.139]:38899 "EHLO e9.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755413Ab1EANW0 (ORCPT ); Sun, 1 May 2011 09:22:26 -0400 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, patches@linaro.org, "Paul E. McKenney" , "Paul E. McKenney" Subject: [PATCH tip/core/rcu 24/86] rcu: Switch to this_cpu() primitives Date: Sun, 1 May 2011 06:21:04 -0700 Message-Id: <1304256126-26015-24-git-send-email-paulmck@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.3.2 In-Reply-To: <20110501132142.GA25494@linux.vnet.ibm.com> References: <20110501132142.GA25494@linux.vnet.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Paul E. McKenney This removes a couple of lines from invoke_rcu_cpu_kthread(), improving readability. Reported-by: Christoph Lameter Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney --- kernel/rcutree.c | 10 +++------- 1 files changed, 3 insertions(+), 7 deletions(-) diff --git a/kernel/rcutree.c b/kernel/rcutree.c index ee8442d..03f7148 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -1480,18 +1480,14 @@ static void rcu_process_callbacks(void) static void invoke_rcu_cpu_kthread(void) { unsigned long flags; - wait_queue_head_t *q; - int cpu; local_irq_save(flags); - cpu = smp_processor_id(); - per_cpu(rcu_cpu_has_work, cpu) = 1; - if (per_cpu(rcu_cpu_kthread_task, cpu) == NULL) { + __this_cpu_write(rcu_cpu_has_work, 1); + if (__this_cpu_read(rcu_cpu_kthread_task) == NULL) { local_irq_restore(flags); return; } - q = &per_cpu(rcu_cpu_wq, cpu); - wake_up(q); + wake_up(&__get_cpu_var(rcu_cpu_wq)); local_irq_restore(flags); } -- 1.7.3.2