From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932086Ab3BRFKe (ORCPT ); Mon, 18 Feb 2013 00:10:34 -0500 Received: from mga03.intel.com ([143.182.124.21]:12556 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751954Ab3BRFHy (ORCPT ); Mon, 18 Feb 2013 00:07:54 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.84,684,1355126400"; d="scan'208";a="258209974" From: Alex Shi To: torvalds@linux-foundation.org, mingo@redhat.com, peterz@infradead.org, tglx@linutronix.de, akpm@linux-foundation.org, arjan@linux.intel.com, bp@alien8.de, pjt@google.com, namhyung@kernel.org, efault@gmx.de Cc: vincent.guittot@linaro.org, gregkh@linuxfoundation.org, preeti@linux.vnet.ibm.com, viresh.kumar@linaro.org, linux-kernel@vger.kernel.org, alex.shi@intel.com, morten.rasmussen@arm.com Subject: [patch v5 07/15] sched: add new sg/sd_lb_stats fields for incoming fork/exec/wake balancing Date: Mon, 18 Feb 2013 13:07:34 +0800 Message-Id: <1361164062-20111-8-git-send-email-alex.shi@intel.com> X-Mailer: git-send-email 1.7.12 In-Reply-To: <1361164062-20111-1-git-send-email-alex.shi@intel.com> References: <1361164062-20111-1-git-send-email-alex.shi@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For power aware balancing, we care the sched domain/group's utilizations more than their load weight. So add: sd_lb_stats.sd_utils and sg_lb_stats.group_utils. We want to know the sd capacity, so add: sd_lb_stats.sd_capacity. And want to know which group is busiest but still has free time to handle more tasks, so add: sd_lb_stats.group_leader. Signed-off-by: Alex Shi --- kernel/sched/fair.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index b9a34ab..32b8a7b 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4214,6 +4214,11 @@ struct sd_lb_stats { unsigned int busiest_group_weight; int group_imb; /* Is there imbalance in this sd */ + + /* Varibles of power awaring scheduling */ + unsigned int sd_utils; /* sum utilizations of this domain */ + unsigned long sd_capacity; /* capacity of this domain */ + struct sched_group *group_leader; /* Group which relieves group_min */ }; /* @@ -4229,6 +4234,7 @@ struct sg_lb_stats { unsigned long group_weight; int group_imb; /* Is there an imbalance in the group ? */ int group_has_capacity; /* Is there extra capacity in the group? */ + unsigned int group_utils; /* sum utilizations of group */ }; /** -- 1.7.12