RE: [PATCH v4] ARM: perf: save/restore pmu registers in pm notifier

Will & Sudeep,

-----Original Message-----
From: Neil Zhang
Sent: 2014年5月5日 14:28
To: Sudeep Holla; Will Deacon
Cc: linux@arm.linux.org.uk; linux-arm-kernel@lists.infradead.org;
linux-kernel@vger.kernel.org; devicetree@vger.kernel.org
Subject: RE: [PATCH v4] ARM: perf: save/restore pmu registers in pm notifier

Sudeep,

quoted

-----Original Message-----
From: Sudeep Holla [mailto:sudeep.holla@arm.com]
Sent: 2014年4月30日 21:31
To: Neil Zhang; Will Deacon
Cc: Sudeep Holla; linux@arm.linux.org.uk;
linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org;
devicetree@vger.kernel.org
Subject: Re: [PATCH v4] ARM: perf: save/restore pmu registers in pm
notifier

Hi Neil,

On 30/04/14 03:21, Neil Zhang wrote:

quoted

quoted

-----Original Message-----
From: Will Deacon [mailto:will.deacon@arm.com]

[...]

quoted

quoted

I think we need some input from the device-tree guys to see whether
they would object to us solving this locally (in the PMU node) or not.
Personally, I'd much prefer a general way to describe the need for
pm-notifiers, but if that's not being looked at then we can cook
something specifically for our needs.

No input from device-tree guys :(

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?

quoted

Regards,
Sudeep

[1] https://lkml.org/lkml/2014/4/23/755

Best Regards,
Neil Zhang

Best Regards,
Neil Zhang
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