From: Lina Iyer <lina.iyer@linaro.org>
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Kevin Hilman <khilman@kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
Howard Chen <howard.chen@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Kevin Hilman <khilman@linaro.org>,
Sudeep Holla <Sudeep.Holla@arm.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
"grant.likely@linaro.org" <grant.likely@linaro.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Mark Rutland <Mark.Rutland@arm.com>
Subject: Re: [RFC PATCH v2 0/1] ARM: cpuidle: heterogeneous systems extension
Date: Tue, 12 May 2015 10:36:50 -0600 [thread overview]
Message-ID: <20150512163650.GM16124@linaro.org> (raw)
In-Reply-To: <20150422085507.GA22601@red-moon>
On Wed, Apr 22 2015 at 02:55 -0600, Lorenzo Pieralisi wrote:
>On Tue, Apr 21, 2015 at 07:24:54PM +0100, Kevin Hilman wrote:
>> On Thu, Apr 16, 2015 at 9:10 AM, Lorenzo Pieralisi
>> <lorenzo.pieralisi@arm.com> wrote:
>>
>> [...]
>>
>> > This patch sets the maximum number of static CPUidle drivers allowed to
>> > two, since it is hard to foresee systems with more than two sets of CPUs
>> > having different idle states
>>
>> It's not hard to forsee anymore:
>>
>> http://www.cnx-software.com/2015/04/21/mediatek-helio-x20-deca-core-processor/
>> https://liliputing.com/2015/04/closer-look-at-mediateks-upcoming-10-core-helio-x20-processor.html
>
>Eheh I stand corrected :). Not a big deal, drivers can be allocated
>dynamically; it seems that the designs above leave us no choice, the
>idle states are the only differentiating factor when it comes
>to CPUidle driver logical cpumask creation, happy to hear more
>opinions on this, but I do not really see what we can use instead.
Dynamic idle driver would be nice. Otherwise, the patch looks good to
me.
Thanks,
Lina
WARNING: multiple messages have this Message-ID (diff)
From: lina.iyer@linaro.org (Lina Iyer)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH v2 0/1] ARM: cpuidle: heterogeneous systems extension
Date: Tue, 12 May 2015 10:36:50 -0600 [thread overview]
Message-ID: <20150512163650.GM16124@linaro.org> (raw)
In-Reply-To: <20150422085507.GA22601@red-moon>
On Wed, Apr 22 2015 at 02:55 -0600, Lorenzo Pieralisi wrote:
>On Tue, Apr 21, 2015 at 07:24:54PM +0100, Kevin Hilman wrote:
>> On Thu, Apr 16, 2015 at 9:10 AM, Lorenzo Pieralisi
>> <lorenzo.pieralisi@arm.com> wrote:
>>
>> [...]
>>
>> > This patch sets the maximum number of static CPUidle drivers allowed to
>> > two, since it is hard to foresee systems with more than two sets of CPUs
>> > having different idle states
>>
>> It's not hard to forsee anymore:
>>
>> http://www.cnx-software.com/2015/04/21/mediatek-helio-x20-deca-core-processor/
>> https://liliputing.com/2015/04/closer-look-at-mediateks-upcoming-10-core-helio-x20-processor.html
>
>Eheh I stand corrected :). Not a big deal, drivers can be allocated
>dynamically; it seems that the designs above leave us no choice, the
>idle states are the only differentiating factor when it comes
>to CPUidle driver logical cpumask creation, happy to hear more
>opinions on this, but I do not really see what we can use instead.
Dynamic idle driver would be nice. Otherwise, the patch looks good to
me.
Thanks,
Lina
next prev parent reply other threads:[~2015-05-12 16:36 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-16 16:10 [RFC PATCH v2 0/1] ARM: cpuidle: heterogeneous systems extension Lorenzo Pieralisi
2015-04-16 16:10 ` Lorenzo Pieralisi
2015-04-16 16:10 ` [RFC PATCH v2 1/1] drivers: cpuidle: cpuidle-arm: " Lorenzo Pieralisi
2015-04-16 16:10 ` Lorenzo Pieralisi
2015-05-04 13:19 ` Daniel Lezcano
2015-05-04 13:19 ` Daniel Lezcano
2015-05-05 15:56 ` Lorenzo Pieralisi
2015-05-05 15:56 ` Lorenzo Pieralisi
2015-05-12 13:03 ` Lorenzo Pieralisi
2015-05-12 13:03 ` Lorenzo Pieralisi
2015-07-14 4:52 ` Daniel Kurtz
2015-07-14 4:52 ` Daniel Kurtz
[not found] ` <CAGS+omBtraNBH43qsFn_YgO3ePbFav9VtwgqDUinbOBMPwOGXA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-07-14 10:04 ` Lorenzo Pieralisi
2015-07-14 10:04 ` Lorenzo Pieralisi
2015-07-14 10:23 ` Lorenzo Pieralisi
2015-07-14 10:23 ` Lorenzo Pieralisi
2015-04-21 18:24 ` [RFC PATCH v2 0/1] ARM: cpuidle: " Kevin Hilman
2015-04-21 18:24 ` Kevin Hilman
2015-04-22 8:55 ` Lorenzo Pieralisi
2015-04-22 8:55 ` Lorenzo Pieralisi
2015-05-12 16:36 ` Lina Iyer [this message]
2015-05-12 16:36 ` Lina Iyer
[not found] ` <1429200617-9546-1-git-send-email-lorenzo.pieralisi-5wv7dgnIgG8@public.gmane.org>
2015-04-30 15:51 ` Lorenzo Pieralisi
2015-04-30 15:51 ` Lorenzo Pieralisi
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