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SubjectRe: combinatorial explosion in lockdep
David Miller wrote:
> The triggering event seems to be kstopmachine as done by the first
> module load. This seems to create the situation where we do double RQ
> locking on essentially all the run queues, in order to move the
> kstopmachine threads around to their proprer cpus. I think this is
> what starts to make the lockdep dependency chains huge.
>

Does Rusty's stop_machine rewrite which puts the threads on the correct
cpus to start with at least mitigate the symptoms?

J


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