On 11/28/2013 01:10 PM, Paolo Bonzini wrote:
Il 28/11/2013 12:09, Gleb Natapov ha scritto:
- if there are no callbacks, but there are readers, synchronize_srcu
busy-loops for some time checking if the readers complete. After a
while (20 us for synchronize_srcu, 120 us for
synchronize_srcu_expedited) it gives up and starts using a workqueue to
poll every millisecond. This should never happen unless
Unless what ? :) Unless reader is scheduled out?
Yes. Or unless my brain is scheduled out in the middle of a sentence.
You need a grace period. Or just sleep().
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