linux-kernel - Re: [linux-pm] [RFC PATCH V3 4/4] cpuidle: Single/Global registration of idle states

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Message-ID: <871v0tvqbh.fsf@ti.com>
Date:	Fri, 22 Apr 2011 16:06:42 -0700
From:	Kevin Hilman <khilman@...com>
To:	Trinabh Gupta <trinabh@...ux.vnet.ibm.com>
Cc:	arjan@...ux.intel.com, peterz@...radead.org, lenb@...nel.org,
	venki@...gle.com, ak@...ux.intel.com, len.brown@...el.com,
	davinci-linux-open-source@...ux.davincidsp.com,
	linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org, linux-pm@...ts.linux-foundation.org,
	linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [linux-pm] [RFC PATCH V3 4/4] cpuidle: Single/Global registration of idle states

Hi Trinabh,

Trinabh Gupta <trinabh@...ux.vnet.ibm.com> writes:

[...]

> I just wanted to get comments on the design and understand how it
> affects various architectures in question. It looks to me as if the
> design should be okay and infact better for architectures like ARM
> since they do not have different idle states for different cpus and
> thus do not require per-cpu registration.  Global registration would
> work and be simpler; please correct me if I am wrong.

Yes, I agree that the new design is better, I especially like that it's
more clear (and expected) that final state decision making is to be done
directly in the driver without the back-and-forth in the current setup.

Thanks,

Kevin
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