From: Sudeep.KarkadaNagesha@arm.com (Sudeep KarkadaNagesha)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC][PATCH 1/2] ARM64: add cpu topology definition
Date: Mon, 29 Jul 2013 11:15:07 +0100 [thread overview]
Message-ID: <51F640AB.2050709@arm.com> (raw)
In-Reply-To: <CAKfTPtBpo41LJ3V8TB8YwudwqpURuA2u_Lvu4KYVK=qSs+gFuQ@mail.gmail.com>
On 29/07/13 10:46, Vincent Guittot wrote:
> On 27 July 2013 12:42, Hanjun Guo <hanjun.guo@linaro.org> wrote:
>> Power aware scheduling needs the cpu topology information to improve the
>> cpu scheduler decision making.
>
> It's not only power aware scheduling. The scheduler already uses
> topology and cache sharing when CONFIG_SCHED_MC and/or
> CONFIG_SCHED_SMT are enable. So you should also add these configs for
> arm64 so the scheduler can use it
>
Just for my knowledge, I thought power aware using SCHED_MC/SMT was
removed. I see commit 8e7fbcbc22c12414bcc9dfdd683637f58fb32759 "sched:
Remove stale power aware scheduling remnants and dysfunctional knobs"
I may be missing something here.
Regards,
Sudeep
WARNING: multiple messages have this Message-ID (diff)
From: Sudeep KarkadaNagesha <Sudeep.KarkadaNagesha@arm.com>
To: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Hanjun Guo <hanjun.guo@linaro.org>,
"linaro-kernel@lists.linaro.org" <linaro-kernel@lists.linaro.org>,
Graeme Gregory <graeme.gregory@linaro.org>,
Al Stone <al.stone@linaro.org>,
Patch Tracking <patches@linaro.org>,
Catalin Marinas <Catalin.Marinas@arm.com>,
linaro-acpi <linaro-acpi@lists.linaro.org>,
Will Deacon <Will.Deacon@arm.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Tomasz Nowicki <tomasz.nowicki@linaro.org>,
Naresh Bhat <naresh.bhat@linaro.org>,
Russell King <rmk+kernel@arm.linux.org.uk>,
LAK <linux-arm-kernel@lists.infradead.org>,
Sudeep.KarkadaNagesha@arm.com
Subject: Re: [RFC][PATCH 1/2] ARM64: add cpu topology definition
Date: Mon, 29 Jul 2013 11:15:07 +0100 [thread overview]
Message-ID: <51F640AB.2050709@arm.com> (raw)
In-Reply-To: <CAKfTPtBpo41LJ3V8TB8YwudwqpURuA2u_Lvu4KYVK=qSs+gFuQ@mail.gmail.com>
On 29/07/13 10:46, Vincent Guittot wrote:
> On 27 July 2013 12:42, Hanjun Guo <hanjun.guo@linaro.org> wrote:
>> Power aware scheduling needs the cpu topology information to improve the
>> cpu scheduler decision making.
>
> It's not only power aware scheduling. The scheduler already uses
> topology and cache sharing when CONFIG_SCHED_MC and/or
> CONFIG_SCHED_SMT are enable. So you should also add these configs for
> arm64 so the scheduler can use it
>
Just for my knowledge, I thought power aware using SCHED_MC/SMT was
removed. I see commit 8e7fbcbc22c12414bcc9dfdd683637f58fb32759 "sched:
Remove stale power aware scheduling remnants and dysfunctional knobs"
I may be missing something here.
Regards,
Sudeep
next prev parent reply other threads:[~2013-07-29 10:15 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-27 10:42 [RFC][PATCH 1/2] ARM64: add cpu topology definition Hanjun Guo
2013-07-27 10:42 ` Hanjun Guo
2013-07-27 10:42 ` [RFC][PATCH 2/2] ARM64: introduce cluster id and make a difference between socket id Hanjun Guo
2013-07-27 10:42 ` Hanjun Guo
2013-07-29 9:38 ` Vincent Guittot
2013-07-29 9:38 ` Vincent Guittot
2013-07-30 7:46 ` Hanjun Guo
2013-07-30 7:46 ` Hanjun Guo
2013-07-29 9:46 ` [RFC][PATCH 1/2] ARM64: add cpu topology definition Vincent Guittot
2013-07-29 9:46 ` Vincent Guittot
2013-07-29 9:54 ` Will Deacon
2013-07-29 9:54 ` Will Deacon
2013-07-29 10:39 ` Vincent Guittot
2013-07-29 10:39 ` Vincent Guittot
2013-07-29 13:36 ` Dave Martin
2013-07-29 13:36 ` Dave Martin
2013-07-29 17:23 ` Lorenzo Pieralisi
2013-07-29 17:23 ` Lorenzo Pieralisi
2013-07-30 8:09 ` Hanjun Guo
2013-07-30 8:09 ` Hanjun Guo
2013-08-14 11:27 ` Catalin Marinas
2013-08-14 11:27 ` Catalin Marinas
2013-08-15 1:00 ` Hanjun Guo
2013-08-15 1:00 ` Hanjun Guo
2013-07-29 10:15 ` Sudeep KarkadaNagesha [this message]
2013-07-29 10:15 ` Sudeep KarkadaNagesha
2013-07-29 10:28 ` Vincent Guittot
2013-07-29 10:28 ` Vincent Guittot
2013-07-30 7:49 ` Hanjun Guo
2013-07-30 7:49 ` Hanjun Guo
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