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From: "Nikunj A. Dadhania" <nikunj@linux.vnet.ibm.com>
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
Subject: [RFC PATCH 3/4] sched: Gang using set_next_buddy
Date: Mon, 19 Dec 2011 14:04:58 +0530	[thread overview]
Message-ID: <20111219083443.32311.61046.stgit@abhimanyu.in.ibm.com> (raw)
In-Reply-To: <20111219083141.32311.9429.stgit@abhimanyu.in.ibm.com>

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 <nikunj@linux.vnet.ibm.com>
---

 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);
 }


  parent reply	other threads:[~2011-12-19  8:33 UTC|newest]

Thread overview: 95+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-19  8:33 [RFC PATCH 0/4] Gang scheduling in CFS Nikunj A. Dadhania
2011-12-19  8:34 ` [RFC PATCH 1/4] sched: Adding cpu.gang file to cpu cgroup Nikunj A. Dadhania
2011-12-19  8:34 ` [RFC PATCH 2/4] sched: Adding gang scheduling infrastrucure Nikunj A. Dadhania
2011-12-19 15:51   ` Peter Zijlstra
2011-12-19 16:51     ` Peter Zijlstra
2011-12-20  1:43       ` Nikunj A Dadhania
2011-12-20  1:39     ` Nikunj A Dadhania
2011-12-19  8:34 ` Nikunj A. Dadhania [this message]
2011-12-19  8:35 ` [RFC PATCH 4/4] sched:Implement set_gang_buddy Nikunj A. Dadhania
2011-12-19 15:51   ` Peter Zijlstra
2011-12-20  1:43     ` Nikunj A Dadhania
2011-12-26  2:30     ` Nikunj A Dadhania
2011-12-19 11:23 ` [RFC PATCH 0/4] Gang scheduling in CFS Ingo Molnar
2011-12-19 11:44   ` Avi Kivity
2011-12-19 11:50     ` Nikunj A Dadhania
2011-12-19 11:59       ` Avi Kivity
2011-12-19 12:06         ` Nikunj A Dadhania
2011-12-19 12:50           ` Avi Kivity
2011-12-19 13:09             ` Nikunj A Dadhania
2011-12-19 11:45   ` Nikunj A Dadhania
2011-12-19 13:22     ` Nikunj A Dadhania
2011-12-19 16:28       ` Ingo Molnar
2011-12-21 10:39   ` Nikunj A Dadhania
2011-12-21 10:43     ` Avi Kivity
2011-12-23  3:20       ` Nikunj A Dadhania
2011-12-23 10:36         ` Ingo Molnar
2011-12-25 10:58           ` Avi Kivity
2011-12-25 15:45             ` Avi Kivity
2011-12-26  3:14             ` Nikunj A Dadhania
2011-12-26  9:05               ` Avi Kivity
2011-12-26 11:33                 ` Nikunj A Dadhania
2011-12-26 11:41                   ` Avi Kivity
2011-12-27  1:47                     ` Nikunj A Dadhania
2011-12-27  9:15                       ` Avi Kivity
2011-12-27 10:24                         ` Nikunj A Dadhania
2011-12-29 16:07                 ` Better qemu/kvm defaults (was Re: [RFC PATCH 0/4] Gang scheduling in CFS) Dor Laor
2011-12-29 16:07                   ` [Qemu-devel] " Dor Laor
2011-12-29 16:13                   ` Avi Kivity
2011-12-29 16:13                     ` [Qemu-devel] " Avi Kivity
2011-12-29 16:16                   ` Anthony Liguori
2011-12-29 16:16                     ` Anthony Liguori
2012-01-01 10:16                     ` Dor Laor
2012-01-01 10:16                       ` [Qemu-devel] " Dor Laor
2012-01-01 14:01                       ` Ronen Hod
2012-01-01 14:01                         ` Ronen Hod
2012-01-02  9:37                         ` Dor Laor
2012-01-02  9:37                           ` [Qemu-devel] " Dor Laor
2012-01-03 15:48                       ` Anthony Liguori
2012-01-03 15:48                         ` Anthony Liguori
2012-01-03 22:31                         ` Dor Laor
2012-01-03 22:31                           ` Dor Laor
2012-01-03 22:45                           ` Anthony Liguori
2012-01-03 22:45                             ` [Qemu-devel] " Anthony Liguori
2012-01-03 22:59                             ` Dor Laor
2012-01-03 22:59                               ` Dor Laor
2011-12-27  3:15               ` [RFC PATCH 0/4] Gang scheduling in CFS Nikunj A Dadhania
2011-12-27  9:17                 ` Avi Kivity
2011-12-27  9:44                   ` Nikunj A Dadhania
2011-12-27  9:51                     ` Avi Kivity
2011-12-27 10:10                       ` Nikunj A Dadhania
2011-12-27 10:34                         ` Avi Kivity
2011-12-27 10:43                           ` Nikunj A Dadhania
2011-12-27 10:53                             ` Avi Kivity
2011-12-30  9:51             ` Ingo Molnar
2011-12-30 10:10               ` Nikunj A Dadhania
2011-12-31  2:21                 ` Nikunj A Dadhania
2012-01-02  4:20                   ` Nikunj A Dadhania
2012-01-02  9:39                     ` Avi Kivity
2012-01-02 10:22                       ` Nikunj A Dadhania
2012-01-02  9:37                   ` Avi Kivity
2012-01-02 10:30                     ` Nikunj A Dadhania
2012-01-02 13:33                       ` Avi Kivity
2012-01-04 10:52                     ` Nikunj A Dadhania
2012-01-04 14:41                       ` Avi Kivity
2012-01-04 14:56                         ` Srivatsa Vaddagiri
2012-01-04 17:13                           ` Avi Kivity
2012-01-05  6:57                             ` Nikunj A Dadhania
2012-01-04 16:47                         ` Rik van Riel
2012-01-04 17:16                           ` Avi Kivity
2012-01-04 20:56                             ` Rik van Riel
2012-01-04 21:31                             ` Peter Zijlstra
2012-01-04 21:41                               ` Avi Kivity
2012-01-05  9:10                                 ` Ingo Molnar
2012-02-20  8:08                                   ` Nikunj A Dadhania
2012-02-20  8:14                                     ` Ingo Molnar
2012-02-20 10:51                                     ` Peter Zijlstra
2012-02-20 11:53                                       ` Nikunj A Dadhania
2012-02-20 12:02                                         ` Srivatsa Vaddagiri
2012-02-20 12:14                                           ` Peter Zijlstra
2012-01-05  2:10                         ` Nikunj A Dadhania
2011-12-19 15:51 ` Peter Zijlstra
2011-12-19 16:09   ` Alan Cox
2011-12-19 22:10   ` Benjamin Herrenschmidt
2011-12-20  1:56   ` Nikunj A Dadhania
2011-12-20  8:52   ` Jeremy Fitzhardinge

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