[PATCH v5 12/12] sched: add SD_PREFER_SIBLING for SMT level

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From: Vincent Guittot <vincent.guittot@linaro.org>
To: peterz@infradead.org, mingo@kernel.org,
	linux-kernel@vger.kernel.org, preeti@linux.vnet.ibm.com,
	linux@arm.linux.org.uk, linux-arm-kernel@lists.infradead.org
Cc: riel@redhat.com, Morten.Rasmussen@arm.com, efault@gmx.de,
	nicolas.pitre@linaro.org, linaro-kernel@lists.linaro.org,
	daniel.lezcano@linaro.org, dietmar.eggemann@arm.com,
	Vincent Guittot <vincent.guittot@linaro.org>
Subject: [PATCH v5 12/12] sched: add SD_PREFER_SIBLING for SMT level
Date: Tue, 26 Aug 2014 13:06:55 +0200	[thread overview]
Message-ID: <1409051215-16788-13-git-send-email-vincent.guittot@linaro.org> (raw)
In-Reply-To: <1409051215-16788-1-git-send-email-vincent.guittot@linaro.org>

add the SD_PREFER_SIBLING flag for SMT level in order to ensure that
the scheduler will put at least 1 task per core.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
---
 kernel/sched/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 7c3b237..ab5ab60 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -6093,6 +6093,7 @@ sd_init(struct sched_domain_topology_level *tl, int cpu)
 	 */
 
 	if (sd->flags & SD_SHARE_CPUCAPACITY) {
+		sd->flags |= SD_PREFER_SIBLING;
 		sd->imbalance_pct = 110;
 		sd->smt_gain = 1178; /* ~15% */
 
-- 
1.9.1

WARNING: multiple messages have this Message-ID (diff)

From: vincent.guittot@linaro.org (Vincent Guittot)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5 12/12] sched: add SD_PREFER_SIBLING for SMT level
Date: Tue, 26 Aug 2014 13:06:55 +0200	[thread overview]
Message-ID: <1409051215-16788-13-git-send-email-vincent.guittot@linaro.org> (raw)
In-Reply-To: <1409051215-16788-1-git-send-email-vincent.guittot@linaro.org>

add the SD_PREFER_SIBLING flag for SMT level in order to ensure that
the scheduler will put at least 1 task per core.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
---
 kernel/sched/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 7c3b237..ab5ab60 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -6093,6 +6093,7 @@ sd_init(struct sched_domain_topology_level *tl, int cpu)
 	 */
 
 	if (sd->flags & SD_SHARE_CPUCAPACITY) {
+		sd->flags |= SD_PREFER_SIBLING;
 		sd->imbalance_pct = 110;
 		sd->smt_gain = 1178; /* ~15% */
 
-- 
1.9.1

next prev parent reply	other threads:[~2014-08-26 11:08 UTC|newest]

Thread overview: 164+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-26 11:06 [PATCH v5 00/12] sched: consolidation of cpu_capacity Vincent Guittot
2014-08-26 11:06 ` Vincent Guittot
2014-08-26 11:06 ` [PATCH v5 01/12] sched: fix imbalance flag reset Vincent Guittot
2014-08-26 11:06   ` Vincent Guittot
2014-09-19 11:47   ` [tip:sched/core] sched: Fix " tip-bot for Vincent Guittot
2014-08-26 11:06 ` [PATCH v5 02/12] sched: remove a wake_affine condition Vincent Guittot
2014-08-26 11:06   ` Vincent Guittot
2014-09-19 11:47   ` [tip:sched/core] sched: Remove a wake_affine() condition tip-bot for Vincent Guittot
2014-08-26 11:06 ` [PATCH v5 03/12] sched: fix avg_load computation Vincent Guittot
2014-08-26 11:06   ` Vincent Guittot
2014-08-30 12:00   ` Preeti U Murthy
2014-08-30 12:00     ` Preeti U Murthy
2014-09-03 11:09     ` Vincent Guittot
2014-09-03 11:09       ` Vincent Guittot
2014-09-03 23:43       ` Tim Chen
2014-09-03 23:43         ` Tim Chen
2014-09-04  7:17         ` Vincent Guittot
2014-09-04  7:17           ` Vincent Guittot
2014-09-04 16:26           ` Tim Chen
2014-09-04 16:26             ` Tim Chen
2014-09-05 11:10   ` Preeti U Murthy
2014-09-05 11:10     ` Preeti U Murthy
2014-09-19 11:47   ` [tip:sched/core] sched: Fix " tip-bot for Vincent Guittot
2014-08-26 11:06 ` [PATCH v5 04/12] sched: Allow all archs to set the capacity_orig Vincent Guittot
2014-08-26 11:06   ` Vincent Guittot
2014-08-27 13:12   ` Kamalesh Babulal
2014-08-27 13:12     ` Kamalesh Babulal
2014-08-30 17:07   ` Preeti U Murthy
2014-08-30 17:07     ` Preeti U Murthy
2014-09-01  8:05     ` Vincent Guittot
2014-09-01  8:05       ` Vincent Guittot
2014-09-03  8:41       ` Preeti U Murthy
2014-09-03  8:41         ` Preeti U Murthy
2014-09-10 13:50     ` Peter Zijlstra
2014-09-10 13:50       ` Peter Zijlstra
2014-09-10 14:22       ` Vincent Guittot
2014-09-10 14:22         ` Vincent Guittot
2014-09-11 10:36       ` Preeti U Murthy
2014-09-11 10:36         ` Preeti U Murthy
2014-09-19 11:47   ` [tip:sched/core] sched: Allow all architectures to set ' capacity_orig' tip-bot for Vincent Guittot
2014-08-26 11:06 ` [PATCH v5 05/12] ARM: topology: use new cpu_capacity interface Vincent Guittot
2014-08-26 11:06   ` Vincent Guittot
2014-09-11 18:52   ` Nicolas Pitre
2014-09-11 18:52     ` Nicolas Pitre
2014-09-19 11:48   ` [tip:sched/core] ARM: topology: Use the " tip-bot for Vincent Guittot
2014-08-26 11:06 ` [PATCH v5 06/12] sched: add per rq cpu_capacity_orig Vincent Guittot
2014-08-26 11:06   ` Vincent Guittot
2014-08-27 13:32   ` Kamalesh Babulal
2014-08-27 13:32     ` Kamalesh Babulal
2014-08-28  7:34     ` Vincent Guittot
2014-08-28  7:34       ` Vincent Guittot
2014-09-10 13:53   ` Peter Zijlstra
2014-09-10 13:53     ` Peter Zijlstra
2014-09-10 14:19     ` Vincent Guittot
2014-09-10 14:19       ` Vincent Guittot
2014-09-11 19:02   ` Nicolas Pitre
2014-09-11 19:02     ` Nicolas Pitre
2014-09-15 21:22     ` Vincent Guittot
2014-09-15 21:22       ` Vincent Guittot
2014-08-26 11:06 ` [PATCH v5 07/12] sched: test the cpu's capacity in wake affine Vincent Guittot
2014-08-26 11:06   ` Vincent Guittot
2014-09-10 14:19   ` Peter Zijlstra
2014-09-10 14:19     ` Peter Zijlstra
2014-09-19 11:48   ` [tip:sched/core] sched: Test the CPU's capacity in wake_affine() tip-bot for Vincent Guittot
2014-08-26 11:06 ` [PATCH v5 08/12] sched: move cfs task on a CPU with higher capacity Vincent Guittot
2014-08-26 11:06   ` Vincent Guittot
2014-08-30 17:50   ` Preeti U Murthy
2014-08-30 17:50     ` Preeti U Murthy
2014-09-01  8:45     ` Vincent Guittot
2014-09-01  8:45       ` Vincent Guittot
2014-09-03  9:11       ` Preeti U Murthy
2014-09-03  9:11         ` Preeti U Murthy
2014-09-03 11:44         ` Vincent Guittot
2014-09-03 11:44           ` Vincent Guittot
2014-09-03 12:26           ` Preeti U Murthy
2014-09-03 12:26             ` Preeti U Murthy
2014-09-03 12:49             ` Vincent Guittot
2014-09-03 12:49               ` Vincent Guittot
2014-09-11  9:27             ` Peter Zijlstra
2014-09-11  9:27               ` Peter Zijlstra
2014-09-05 12:06   ` Preeti U Murthy
2014-09-05 12:06     ` Preeti U Murthy
2014-09-05 12:24     ` Vincent Guittot
2014-09-05 12:24       ` Vincent Guittot
2014-09-11 10:07   ` Peter Zijlstra
2014-09-11 10:07     ` Peter Zijlstra
2014-09-11 11:20     ` Vincent Guittot
2014-09-11 11:20       ` Vincent Guittot
2014-09-11 10:13   ` Peter Zijlstra
2014-09-11 10:13     ` Peter Zijlstra
2014-09-11 12:14     ` Vincent Guittot
2014-09-11 12:14       ` Vincent Guittot
2014-09-11 11:54   ` Peter Zijlstra
2014-09-11 11:54     ` Peter Zijlstra
2014-08-26 11:06 ` [PATCH v5 09/12] sched: add usage_load_avg Vincent Guittot
2014-08-26 11:06   ` Vincent Guittot
2014-09-04  7:34   ` [PATCH v5 09/11] " Vincent Guittot
2014-09-04  7:34     ` Vincent Guittot
2014-09-11 11:17     ` Peter Zijlstra
2014-09-11 11:17       ` Peter Zijlstra
2014-09-11 11:17   ` [PATCH v5 09/12] " Peter Zijlstra
2014-09-11 11:17     ` Peter Zijlstra
2014-09-11 12:18     ` Vincent Guittot
2014-09-11 12:18       ` Vincent Guittot
2014-09-11 12:20     ` Vincent Guittot
2014-09-11 12:20       ` Vincent Guittot
2014-09-15 19:15   ` Morten Rasmussen
2014-09-15 19:15     ` Morten Rasmussen
2014-09-15 22:33     ` Vincent Guittot
2014-09-15 22:33       ` Vincent Guittot
2014-08-26 11:06 ` [PATCH v5 10/12] sched: get CPU's utilization statistic Vincent Guittot
2014-08-26 11:06   ` Vincent Guittot
2014-09-11 12:34   ` Peter Zijlstra
2014-09-11 12:34     ` Peter Zijlstra
2014-09-11 13:07     ` Vincent Guittot
2014-09-11 13:07       ` Vincent Guittot
2014-09-11 14:04       ` Peter Zijlstra
2014-09-11 14:04         ` Peter Zijlstra
2014-09-11 19:17         ` Nicolas Pitre
2014-09-11 19:17           ` Nicolas Pitre
2014-09-12  7:41           ` Vincent Guittot
2014-09-12  7:41             ` Vincent Guittot
2014-09-15 19:45         ` Morten Rasmussen
2014-09-15 19:45           ` Morten Rasmussen
2014-09-16 22:43           ` Vincent Guittot
2014-09-16 22:43             ` Vincent Guittot
2014-09-15 19:28     ` Morten Rasmussen
2014-09-15 19:28       ` Morten Rasmussen
2014-08-26 11:06 ` [PATCH v5 11/12] sched: replace capacity_factor by utilization Vincent Guittot
2014-08-26 11:06   ` Vincent Guittot
2014-09-11 15:39   ` Peter Zijlstra
2014-09-11 15:39     ` Peter Zijlstra
2014-09-11 16:15   ` Peter Zijlstra
2014-09-11 16:15     ` Peter Zijlstra
2014-09-11 17:26     ` Vincent Guittot
2014-09-11 17:26       ` Vincent Guittot
2014-09-14 19:41       ` Peter Zijlstra
2014-09-14 19:41         ` Peter Zijlstra
2014-09-14 19:51         ` Peter Zijlstra
2014-09-14 19:51           ` Peter Zijlstra
2014-09-15 11:42         ` Peter Zijlstra
2014-09-15 11:42           ` Peter Zijlstra
2014-09-15 19:07           ` Nicolas Pitre
2014-09-15 19:07             ` Nicolas Pitre
2014-09-15 20:01             ` Peter Zijlstra
2014-09-15 20:01               ` Peter Zijlstra
2014-09-17 18:45               ` Morten Rasmussen
2014-09-17 18:45                 ` Morten Rasmussen
2014-09-17 18:58                 ` Morten Rasmussen
2014-09-17 18:58                   ` Morten Rasmussen
2014-09-17 23:03                 ` Peter Zijlstra
2014-09-17 23:03                   ` Peter Zijlstra
2014-09-15 22:14           ` Vincent Guittot
2014-09-15 22:14             ` Vincent Guittot
2014-09-15 22:18             ` Vincent Guittot
2014-09-15 22:18               ` Vincent Guittot
2014-09-17 22:25             ` Peter Zijlstra
2014-09-17 22:25               ` Peter Zijlstra
2014-09-18  1:32               ` Vincent Guittot
2014-09-18  1:32                 ` Vincent Guittot
2014-09-16 17:00         ` Dietmar Eggemann
2014-09-16 17:00           ` Dietmar Eggemann
2014-08-26 11:06 ` Vincent Guittot [this message]
2014-08-26 11:06   ` [PATCH v5 12/12] sched: add SD_PREFER_SIBLING for SMT level Vincent Guittot

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