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    SubjectRe: rcu: endless stalls
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    On Wed, 2012-06-13 at 07:56 +0200, Mike Galbraith wrote:

    > Question remains though. Maybe the box hit some other problem that led
    > to death by RCU gripage, but the info I received indicated the box was
    > in the midst of a major spin-fest.

    To (maybe) speak more clearly, since it's a mutex like any other mutex
    that loads of CPUs can hit if you've got loads of CPUs, did huge box
    driver do something that we don't expect so many CPUs to be doing, thus
    instigate simultaneous exit trouble (ie shoot self in foot), or did that
    mutex addition create the exit trouble which box appeared to be having?

    Too bad box RCU griped itself to death, would have been nice to have
    more than a snippet.

    -Mike



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