lockup_detector: Convert cpu notifier to return encapsulate errno value
By the commit e6bde73b ("cpu-hotplug: return better errno on cpu hotplug failure"), the cpu notifier can return encapsulate errno value, resulting in more meaningful error codes for CPU hotplug failures. This converts the cpu notifier to return encapsulate errno value for the lockup_detector as well. Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com> Cc: peterz@infradead.org Cc: gorcunov@gmail.com Cc: fweisbec@gmail.com LKML-Reference: <1283310009-22168-3-git-send-email-dzickus@redhat.com> Signed-off-by: NDon Zickus <dzickus@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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