From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754522AbcEELZA (ORCPT ); Thu, 5 May 2016 07:25:00 -0400 Received: from terminus.zytor.com ([198.137.202.10]:47292 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751218AbcEELY6 (ORCPT ); Thu, 5 May 2016 07:24:58 -0400 Date: Thu, 5 May 2016 04:24:26 -0700 From: tip-bot for Thomas Gleixner Message-ID: Cc: peterz@infradead.org, tglx@linutronix.de, hpa@zytor.com, mingo@kernel.org, linux-kernel@vger.kernel.org Reply-To: linux-kernel@vger.kernel.org, mingo@kernel.org, hpa@zytor.com, tglx@linutronix.de, peterz@infradead.org In-Reply-To: <20160310120025.248226511@linutronix.de> References: <20160310120025.248226511@linutronix.de> To: linux-tip-commits@vger.kernel.org Subject: [tip:smp/hotplug] sched/migration: Move prepare transition to SCHED_STARTING state Git-Commit-ID: 42ee97d78a69d580d240e79b69a3bb151472270c X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 42ee97d78a69d580d240e79b69a3bb151472270c Gitweb: http://git.kernel.org/tip/42ee97d78a69d580d240e79b69a3bb151472270c Author: Thomas Gleixner AuthorDate: Thu, 10 Mar 2016 12:54:15 +0100 Committer: Thomas Gleixner CommitDate: Thu, 5 May 2016 13:17:54 +0200 sched/migration: Move prepare transition to SCHED_STARTING state We can piggy pack that on the SCHED_STARTING state. It's not required before the cpu actually comes online. Name the function proper as it has nothing to do with migration. Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160310120025.248226511@linutronix.de Signed-off-by: Thomas Gleixner --- kernel/sched/core.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 0a31078..bafc308 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -5424,11 +5424,6 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu) switch (action & ~CPU_TASKS_FROZEN) { - case CPU_UP_PREPARE: - rq->calc_load_update = calc_load_update; - account_reset_rq(rq); - break; - case CPU_ONLINE: /* Update our root-domain */ raw_spin_lock_irqsave(&rq->lock, flags); @@ -7139,9 +7134,19 @@ int sched_cpu_deactivate(unsigned int cpu) return 0; } +static void sched_rq_cpu_starting(unsigned int cpu) +{ + struct rq *rq = cpu_rq(cpu); + + rq->calc_load_update = calc_load_update; + account_reset_rq(rq); + update_max_interval(); +} + int sched_cpu_starting(unsigned int cpu) { set_cpu_rq_start_time(cpu); + sched_rq_cpu_starting(cpu); return 0; } @@ -7182,11 +7187,8 @@ void __init sched_init_smp(void) static int __init migration_init(void) { void *cpu = (void *)(long)smp_processor_id(); - int err; - /* Initialize migration for the boot CPU */ - err = migration_call(&migration_notifier, CPU_UP_PREPARE, cpu); - BUG_ON(err == NOTIFY_BAD); + sched_rq_cpu_starting(smp_processor_id()); migration_call(&migration_notifier, CPU_ONLINE, cpu); register_cpu_notifier(&migration_notifier);