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Date:	Thu, 18 Feb 2016 10:57:55 -0800
From:	David Daney <ddaney@...iumnetworks.com>
To:	Will Deacon <will.deacon@....com>,
	"Pinski, Andrew" <Andrew.Pinski@...iumnetworks.com>
CC:	Jan Glauber <jglauber@...ium.com>,
	Mark Rutland <mark.rutland@....com>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v4 4/5] arm64/perf: Enable PMCR long cycle counter bit

On 02/18/2016 09:34 AM, Will Deacon wrote:
> On Thu, Feb 18, 2016 at 05:50:13PM +0100, Jan Glauber wrote:
>> With the long cycle counter bit (LC) disabled the cycle counter is not
>> working on ThunderX SOC (ThunderX only implements Aarch64).
>> Also, according to documentation LC == 0 is deprecated.
>>
>> To keep the code simple the patch does not introduce 64 bit wide counter
>> functions. Instead writing the cycle counter always sets the upper
>> 32 bits so overflow interrupts are generated as before.
>>
>> Original patch from Andrew Pinksi <Andrew.Pinksi@...iumnetworks.com>
>
> What does this mean? Do we need Andrew's S-o-B, or is this a fresh patch?

I don't believe we need Andrew's S-o-B as the assertion of the 
Developer's Certificate of Origin 1.1 clauses (a), (b) and (d) is being 
made.  Specifically, clause (c) does not apply.

However this may be a gray area, so we could put on Andrew's S-o-B if 
that would make everybody happier.

David Daney


>
> Will
>
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> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>

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