From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752658Ab1LSIdt (ORCPT ); Mon, 19 Dec 2011 03:33:49 -0500 Received: from e28smtp02.in.ibm.com ([122.248.162.2]:38198 "EHLO e28smtp02.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752505Ab1LSIdr (ORCPT ); Mon, 19 Dec 2011 03:33:47 -0500 From: "Nikunj A. Dadhania" Subject: [RFC PATCH 3/4] sched: Gang using set_next_buddy To: peterz@infradead.org, mingo@elte.hu, linux-kernel@vger.kernel.org Cc: nikunj@linux.vnet.ibm.com, vatsa@linux.vnet.ibm.com, bharata@linux.vnet.ibm.com Date: Mon, 19 Dec 2011 14:04:58 +0530 Message-ID: <20111219083443.32311.61046.stgit@abhimanyu.in.ibm.com> In-Reply-To: <20111219083141.32311.9429.stgit@abhimanyu.in.ibm.com> References: <20111219083141.32311.9429.stgit@abhimanyu.in.ibm.com> User-Agent: StGIT/0.14.3 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit x-cbid: 11121908-5816-0000-0000-0000008107CE Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Gang task group is faroured to be picked up using the set_next_buddy api and hope that scheduler gives it priority. Signed-off-by: Nikunj A. Dadhania --- kernel/sched/fair.c | 7 +++++-- 1 files changed, 5 insertions(+), 2 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index c03efd2..9a2f291 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -5518,8 +5518,11 @@ static void gang_sched_member(void *info) /* Check if the runqueue has runnable tasks */ if (cfs_rq->nr_running) { - /* Favour this task group and set need_resched flag, - * added by following patches */ + struct sched_entity *se = tg->se[cpu]; + + /* Make the parent favourable */ + set_next_buddy(se); + set_tsk_need_resched(current); } raw_spin_unlock_irqrestore(&rq->lock, flags); }