Re: [PATCH 1/3] perf events: fix WARN_ON_ONCE for 64-bit raw data,SW events

From: Arnaldo Carvalho de Melo
Date: Fri Feb 18 2011 - 12:05:05 EST


Em Fri, Feb 18, 2011 at 04:01:31PM +0100, Peter Zijlstra escreveu:
> On Fri, 2011-02-18 at 12:53 -0200, Arnaldo Carvalho de Melo wrote:
> > > So size should be changed to u64 rather than modifying the
> > WARN_ON_ONCE?
> >
> > Yeah, I guess so, 32-bit has to die it seems, gets in the way of
> > testing
> > :-)
>
> No!
>
> 1) don't use RAW unless you have to
> 2) you don't have to, goto 1
> 3) if you do anyway, ensure its properly padded

Ok, but using that struct definition on 32-bit land, will lead to non 8 byte
alignment, right?

- Arnaldo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/