linux-kernel - Re: [PATCH v4] ARM: perf: save/restore pmu registers in pm notifier

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Date:	Tue, 13 May 2014 19:45:03 +0100
From:	Will Deacon <will.deacon@....com>
To:	Neil Zhang <zhangwm@...vell.com>
Cc:	Sudeep Holla <Sudeep.Holla@....com>,
	"'linux@....linux.org.uk'" <linux@....linux.org.uk>,
	"'linux-arm-kernel@...ts.infradead.org'" 
	<linux-arm-kernel@...ts.infradead.org>,
	"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>,
	"'devicetree@...r.kernel.org'" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v4] ARM: perf: save/restore pmu registers in pm notifier

On Mon, May 12, 2014 at 11:22:09AM +0100, Neil Zhang wrote:
> > > The device tree bindings for power domains is under discussion [1]
> > 
> > Thanks for the information.
> > But it currently for device only, core related stuff are not supported.
> > And is it really good to register power provider for core and let vfp / pmu etc
> > to get it?
> > 
> 
> What's your suggestion about it?
> Is it OK that I add it under the PMU node?

I don't really mind. I just want to avoid re-inventing the wheel in a
PMU-specific way and having to maintain that code forever because it ended
up in our DT description.

Will
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