From: preeti@linux.vnet.ibm.com (Preeti U Murthy)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v6 6/6] sched: add SD_PREFER_SIBLING for SMT level
Date: Wed, 24 Sep 2014 17:57:51 +0530 [thread overview]
Message-ID: <5422B8C7.6090905@linux.vnet.ibm.com> (raw)
In-Reply-To: <1411488485-10025-7-git-send-email-vincent.guittot@linaro.org>
On 09/23/2014 09:38 PM, Vincent Guittot wrote:
> 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 c7c8ac4..f72663e 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -6134,6 +6134,7 @@ 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% */
>
Reviewed-by: Preeti U. Murthy <preeti@linux.vnet.ibm.com>
WARNING: multiple messages have this Message-ID (diff)
From: Preeti U Murthy <preeti@linux.vnet.ibm.com>
To: Vincent Guittot <vincent.guittot@linaro.org>,
peterz@infradead.org, mingo@kernel.org,
linux-kernel@vger.kernel.org, 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,
pjt@google.com, bsegall@google.com
Subject: Re: [PATCH v6 6/6] sched: add SD_PREFER_SIBLING for SMT level
Date: Wed, 24 Sep 2014 17:57:51 +0530 [thread overview]
Message-ID: <5422B8C7.6090905@linux.vnet.ibm.com> (raw)
In-Reply-To: <1411488485-10025-7-git-send-email-vincent.guittot@linaro.org>
On 09/23/2014 09:38 PM, Vincent Guittot wrote:
> 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 c7c8ac4..f72663e 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -6134,6 +6134,7 @@ 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% */
>
Reviewed-by: Preeti U. Murthy <preeti@linux.vnet.ibm.com>
next prev parent reply other threads:[~2014-09-24 12:27 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-23 16:07 [PATCH v6 0/6] sched: consolidation of cpu_capacity Vincent Guittot
2014-09-23 16:07 ` Vincent Guittot
2014-09-23 16:08 ` [PATCH v6 1/6] sched: add per rq cpu_capacity_orig Vincent Guittot
2014-09-23 16:08 ` Vincent Guittot
2014-09-23 16:08 ` [PATCH v6 2/6] sched: move cfs task on a CPU with higher capacity Vincent Guittot
2014-09-23 16:08 ` Vincent Guittot
2014-09-23 16:08 ` [PATCH v6 3/6] sched: add utilization_avg_contrib Vincent Guittot
2014-09-23 16:08 ` Vincent Guittot
2014-10-03 14:15 ` Peter Zijlstra
2014-10-03 14:15 ` Peter Zijlstra
2014-10-03 14:44 ` Vincent Guittot
2014-10-03 14:44 ` Vincent Guittot
2014-10-03 14:36 ` Peter Zijlstra
2014-10-03 14:36 ` Peter Zijlstra
2014-10-03 14:51 ` Vincent Guittot
2014-10-03 14:51 ` Vincent Guittot
2014-10-03 15:14 ` Peter Zijlstra
2014-10-03 15:14 ` Peter Zijlstra
2014-10-03 16:05 ` Morten Rasmussen
2014-10-03 16:05 ` Morten Rasmussen
2014-09-23 16:08 ` [PATCH v6 4/6] sched: get CPU's usage statistic Vincent Guittot
2014-09-23 16:08 ` Vincent Guittot
2014-09-25 19:05 ` Dietmar Eggemann
2014-09-25 19:05 ` Dietmar Eggemann
2014-09-26 12:17 ` Vincent Guittot
2014-09-26 12:17 ` Vincent Guittot
2014-09-26 15:58 ` Morten Rasmussen
2014-09-26 15:58 ` Morten Rasmussen
2014-09-26 19:57 ` Dietmar Eggemann
2014-09-26 19:57 ` Dietmar Eggemann
2014-11-21 5:36 ` Wanpeng Li
2014-11-21 5:36 ` Wanpeng Li
2014-11-21 12:17 ` Vincent Guittot
2014-11-21 12:17 ` Vincent Guittot
2014-09-23 16:08 ` [PATCH v6 5/6] sched: replace capacity_factor by usage Vincent Guittot
2014-09-23 16:08 ` Vincent Guittot
2014-09-24 17:48 ` Dietmar Eggemann
2014-09-24 17:48 ` Dietmar Eggemann
2014-09-25 8:35 ` Vincent Guittot
2014-09-25 8:35 ` Vincent Guittot
2014-09-25 19:19 ` Dietmar Eggemann
2014-09-25 19:19 ` Dietmar Eggemann
2014-09-26 12:39 ` Vincent Guittot
2014-09-26 12:39 ` Vincent Guittot
2014-09-26 14:00 ` Dietmar Eggemann
2014-09-26 14:00 ` Dietmar Eggemann
2014-09-25 8:38 ` Vincent Guittot
2014-09-25 8:38 ` Vincent Guittot
2014-09-29 13:39 ` Dietmar Eggemann
2014-09-29 13:39 ` Dietmar Eggemann
2014-10-02 16:57 ` Morten Rasmussen
2014-10-02 16:57 ` Morten Rasmussen
2014-10-03 7:24 ` Vincent Guittot
2014-10-03 7:24 ` Vincent Guittot
2014-10-03 9:35 ` Morten Rasmussen
2014-10-03 9:35 ` Morten Rasmussen
2014-10-03 12:50 ` Vincent Guittot
2014-10-03 12:50 ` Vincent Guittot
2014-11-23 0:22 ` Wanpeng Li
2014-11-23 0:22 ` Wanpeng Li
2014-11-24 8:26 ` Vincent Guittot
2014-11-24 8:26 ` Vincent Guittot
2014-10-03 15:38 ` Peter Zijlstra
2014-10-03 15:38 ` Peter Zijlstra
2014-10-06 8:55 ` Vincent Guittot
2014-10-06 8:55 ` Vincent Guittot
2014-09-23 16:08 ` [PATCH v6 6/6] sched: add SD_PREFER_SIBLING for SMT level Vincent Guittot
2014-09-23 16:08 ` Vincent Guittot
2014-09-24 12:27 ` Preeti U Murthy [this message]
2014-09-24 12:27 ` Preeti U Murthy
2014-09-25 12:10 ` Vincent Guittot
2014-09-25 12:10 ` Vincent Guittot
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