4730a8972b
Implement lock_spin()/unlock_spin() lock class methods, moving the assertion to _sleep() instead. Change assertions in callout(9) to allow spin locks for both regular and C_DIRECT_EXEC cases. In case of C_DIRECT_EXEC callouts spin locks are the only locks allowed actually. As the first use case allow taskqueue_enqueue_timeout() use on fast task queues. It actually becomes more efficient due to avoided extra context switches in callout(9) thanks to C_DIRECT_EXEC. MFC after: 2 weeks Reviewed by: hselasky Differential Revision: https://reviews.freebsd.org/D31778 |
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