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Date: Tue, 22 Nov 2011 12:14:22 +0000
From: Will Deacon <will.deacon@arm.com>
To: Oleg Strikov <OSTRIKOV@nvidia.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>, "mingo@elte.hu" <mingo@elte.hu>,
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        Vince Weaver <vince@deater.net>
Subject: Re: [RFC][PATCH 2/6] perf, arch: Rework perf_event_index()
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On Tue, Nov 22, 2011 at 12:00:33PM +0000, Oleg Strikov wrote:
> Also, please do not forget that enabling the userspace access to the counters may not only create some problems
> to the profilers like Perf/OProfile but could also trash the kernel with the interrupts.

Actually, the registers for controlling interrupts aren't visible to
userspace with ARMv7. On ARMv6, this is a different story, which is why I
didn't mention doing this for older platforms earlier :)

Anyway, this thread has digressed now so you can always jump onto the ARM
list (linux-arm-kernel) if you want to discuss this more.

Cheers,

Will