On Thu, Aug 01, 2013 at 03:28:34PM +0200, Frederic Weisbecker wrote:
SNIP
> > also for following case:
> >
> > count = atomic_inc_return(&nr_callchain_events);
> > if (WARN_ON_ONCE(count < 1)) {
> > err = -EINVAL;
> > goto exit;
> > }
> >
> > seems like it screws the count
>
> I'm not sure what you mean here. You mean that it could be negative when the
> dec is done
> outside the lock?
yes
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