From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 24 Feb 2011 21:33:03 +0000
Subject: Re: [PATCH V5 2/2] tracing, perf : add cpu hotplug trace events
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To: Peter Zijlstra <peterz@infradead.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, Nicolas Pitre <nicolas.pitre@linaro.org>, Vincent Guittot <vincent.guittot@linaro.org>, lkml <linux-kernel@vger.kernel.org>, linux-hotplug@vger.kernel.org, Frederic Weisbecker <fweisbec@gmail.com>, Steven Rostedt <rostedt@goodmis.org>, amit.kucheria@linaro.org, Rusty Russell <rusty@rustcorp.com.au>, Ingo Molnar <mingo@elte.hu>

On Thu, 24 Feb 2011, Peter Zijlstra wrote:

> On Thu, 2011-02-24 at 22:12 +0100, Thomas Gleixner wrote:
> 
> > If you take down the whole SoC, then it's full S2RAM or some
> > equivilant thing. That's a different story and propably requires the
> > whole hotplug muck.
> 
> Didn't we, during the whole wakelock trainwreck, that s2ram could be
> done from idle as well (for hardware where the whole opportunistic
> suspend was sensible to begin with)?

Yes, needs some more changes to the whole infrastructure of clocks and
power gates, but it's doable.

Thanks,

	tglx