The ULE scheduler can break the natural affinity of the interrupt thread with the
core receiving the interruption event. If a core receives a hardware or software
interrupt, the common case outcome should be for the interrupt thread to be scheduled
immediately on the local core. With this particular issue in the ULE scheduler it
becomes likely that the local core will decide to schedule an interrupt thread on a
different core immediately.

Submitted by: Marc De La Gueronniere <mdelagueronniere@verisign.com>
MFC after: 1 week
Sponsored by: Verisign, Inc.