From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757518AbaGWFLM (ORCPT ); Wed, 23 Jul 2014 01:11:12 -0400 Received: from mail-yk0-f182.google.com ([209.85.160.182]:64649 "EHLO mail-yk0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757458AbaGWFLG (ORCPT ); Wed, 23 Jul 2014 01:11:06 -0400 From: Pranith Kumar To: "Paul E. McKenney" , Josh Triplett , Steven Rostedt , Mathieu Desnoyers , Lai Jiangshan , linux-kernel@vger.kernel.org (open list:READ-COPY UPDATE...) Subject: [PATCH 13/16] rcu: Spawn nocb kthreads from rcu_prepare_kthreads() Date: Wed, 23 Jul 2014 01:09:50 -0400 Message-Id: <1406092194-13004-14-git-send-email-bobby.prani@gmail.com> X-Mailer: git-send-email 2.0.0.rc2 In-Reply-To: <1406092194-13004-1-git-send-email-bobby.prani@gmail.com> References: <1406092194-13004-1-git-send-email-bobby.prani@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org rcu_prepare_kthreads() is called when a CPU hotplug event happens. We can also spawn the nocb kthreads from this function. This is preparation for the next patch which remove the redundant check for rcu_scheduler_fully_active. This commit moves the spawning of nocb kthreads to rcu_prepare_kthreads(). Signed-off-by: Pranith Kumar --- kernel/rcu/tree.c | 1 - kernel/rcu/tree_plugin.h | 2 ++ 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index afd54e2..4dc449c 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -3453,7 +3453,6 @@ static int rcu_cpu_notify(struct notifier_block *self, case CPU_UP_PREPARE_FROZEN: rcu_prepare_cpu(cpu); rcu_prepare_kthreads(cpu); - rcu_spawn_all_nocb_kthreads(cpu); break; case CPU_ONLINE: case CPU_DOWN_FAILED: diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 4d42791..9a50e1d 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -1488,6 +1488,8 @@ static void rcu_prepare_kthreads(int cpu) /* Fire up the incoming CPU's kthread and leaf rcu_node kthread. */ if (rcu_scheduler_fully_active) rcu_spawn_one_boost_kthread(rcu_state_p, rnp); + + rcu_spawn_all_nocb_kthreads(cpu); } #else /* #ifdef CONFIG_RCU_BOOST */ -- 2.0.0.rc2