K 10
svn:author
V 3
smh
K 8
svn:date
V 27
2018-03-14T21:32:23.531615Z
K 7
svn:log
V 522
Fix mps deadlock when handling panic

During shutdown mps waits for its SSU requests to complete however when
performing a reboot after handling a panic the scheduler is stopped so
getmicrotime which is used can be non-functional.

Switch to using the same method as shutdown_panic to ensure we actually
complete.

In addition reduce the timeout when RB_NOSYNC is set in howto as we expect
this to fail.

Reviewed by:	slm
MFC after:	1 week
Sponsored by:	Multiplay
Differential Revision:	https://reviews.freebsd.org/D12776

END