On Tue, 7 Jul 2009, Peter Zijlstra wrote:
>
> Another issue, at about >=256 vmas we'll overflow the preempt count. So
> disabling lockdep will only 'fix' this for a short while, until you've
> bloated beyond that ;-)
We would?
I don't think so. Sure, we'd "overflow" into the softirq bits, but it's
all designed to faile very gracefully. Somebody who tests our "status"
might think we're in softirq context, but that really doesn't matter: we
still have preemption disabled.
> Linus, Ingo, any opinions?
I do think that if lockdep can't handle it, we probably should turn it off
around it.
I don't think it's broken wrt regular preempt, though.
Linus
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