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SubjectRe: Random panics seen in 2.6.18-rc1

* Ingo Molnar <mingo@elte.hu> wrote:

> but ... i think gcc ought to be able to figure out that the parameter
> is totally unused on !LOCKDEP - all functions involved are static, and
> we are using -funit-at-a-time already. That should make the parameter
> passing totally zero-cost.

hm, gcc (as of 4.1.1) doesnt seem to be able to figure that out,
probably due to the 'nesting + 1' changing the variable.

Anyway, Arjan's nesting-type idea should solve the problem - in that
case 'nesting + 1' becomes an identity mapping of a zero-sized variable,
which will generate zero code.

Ingo
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