Re: [PATCH] perf_events: fix bogus warn_on(_once) in perf_prepare_sample()

[Peter Zijlstra]

On Thu, 2010-04-08 at 23:08 +0200, Stephane Eranian wrote:
> 
> > There's various things that do indeed rely on the perf buffer to always
> > be u64 aligned, so this warning isn't bogus at all.
> >
> I assume this has to do with the wrap-around detection.

Nah, mostly dealing with architectures that don't do well with unaligned
accesses.

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