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From: "Shilimkar, Santosh" <santosh.shilimkar@ti.com>
To: Kevin Hilman <khilman@ti.com>
Cc: Colin Cross <ccross@android.com>,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-pm@lists.linux-foundation.org,
	Len Brown <len.brown@intel.com>,
	Amit Kucheria <amit.kucheria@linaro.org>,
	Arjan van de Ven <arjan@linux.intel.com>,
	Trinabh Gupta <g.trinabh@gmail.com>,
	Deepthi Dharwar <deepthi@linux.vnet.ibm.com>,
	linux-omap@vger.kernel.org, linux-tegra@vger.kernel.org
Subject: Re: [PATCH 0/3] coupled cpuidle state support
Date: Wed, 4 Jan 2012 18:27:29 +0100	[thread overview]
Message-ID: <CAMQu2gwsw+RC+Y9P8r9Yjy+ADuQ-tPzcXPPncLxMjjb3tvdbbQ@mail.gmail.com> (raw)
In-Reply-To: <87sjjw70zs.fsf@ti.com>

On Wed, Jan 4, 2012 at 1:41 AM, Kevin Hilman <khilman@ti.com> wrote:
> Colin Cross <ccross@android.com> writes:
>
>
>> This patch series implements an alternative solution, where each
>> cpu will wait in the WFI state until all cpus are ready to enter
>> a coupled state, at which point the coupled state function will
>> be called on all cpus at approximately the same time.
>
> This looks great, and is certainly preferred to hotplug IMO.
>
> [...]
>
>> None of the platforms I work with have an SMP idle implementation
>> upstream, so I can't easily show a patch that converts a platform
>> from hotplug governor to coupled cpuidle states.
>
> Basic OMAP4 CPUidle support is in now queued for v3.3 (see omap4
> branch Tony's tree[1].)
>
> Can you (or Santosh) send a patch that adds coupled support to that
> driver so it can see some broader testing on OMAP4?
>
I briefly attempted OMAP4 idle with this series but had some lock
up related issues which we faced in the older development.

Then I got busy into other activities which will keep me occupied for
next few weeks. I will be happy to share the patches in case some one
would like to have a look till then.

Regards
Santosh

  reply	other threads:[~2012-01-04 17:27 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-21  0:09 [PATCH 0/3] coupled cpuidle state support Colin Cross
2011-12-21  0:09 ` [PATCH 1/3] cpuidle: refactor out cpuidle_enter_state Colin Cross
2012-01-04 14:08   ` [linux-pm] " Jean Pihet
2011-12-21  0:09 ` [PATCH 2/3] cpuidle: fix error handling in __cpuidle_register_device Colin Cross
2011-12-21  0:09 ` [PATCH 3/3] cpuidle: add support for states that affect multiple cpus Colin Cross
2011-12-21  9:02 ` [PATCH 0/3] coupled cpuidle state support Arjan van de Ven
2011-12-21  9:40   ` Colin Cross
2011-12-21  9:44     ` Arjan van de Ven
2011-12-21  9:55       ` Colin Cross
2011-12-21 12:12         ` Arjan van de Ven
2011-12-21 19:05           ` Colin Cross
2011-12-21 19:36             ` Arjan van de Ven
2011-12-21 19:42               ` [linux-pm] " Colin Cross
2011-12-22  8:35                 ` Shilimkar, Santosh
2011-12-22  8:53                   ` Arjan van de Ven
2011-12-22  9:30                     ` Shilimkar, Santosh
2011-12-22 21:20                     ` Colin Cross
2012-03-14  0:39           ` Colin Cross
2012-01-04  0:41 ` Kevin Hilman
2012-01-04 17:27   ` Shilimkar, Santosh [this message]
2012-01-20  8:46 ` Daniel Lezcano
2012-01-20 20:40   ` Colin Cross
2012-01-25 14:04     ` Daniel Lezcano
2012-01-31 14:13       ` Daniel Lezcano
2012-01-27  8:54     ` [linux-pm] " Vincent Guittot
2012-01-27 17:32       ` Colin Cross
2012-02-01 12:13         ` Vincent Guittot
2012-02-01 14:59           ` Lorenzo Pieralisi
2012-02-01 17:30             ` Colin Cross
2012-02-01 18:07               ` Lorenzo Pieralisi
2012-02-03  1:19                 ` Colin Cross
     [not found]   ` <8762e8kqi6.fsf@ti.com>
2012-03-14  0:28     ` Colin Cross
2012-03-14  0:47       ` Colin Cross
2012-03-14 14:23         ` [linux-pm] " Kevin Hilman
2012-03-14  2:04     ` Arjan van de Ven
2012-03-14  2:21       ` Colin Cross

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