K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2020-02-12T11:16:55.162578Z
K 7
svn:log
V 436
Add smp_rendezvous_cpus_retry

This is a wrapper around smp_rendezvous_cpus which enables use of IPI
handlers which can fail and require retrying.

wait_func argument is added to to provide a routine which can be used to
poll CPU of interest for when the IPI can be retried.

Handlers which succeed must call smp_rendezvous_cpus_done to denote that
fact.

Discussed with:	 jeff
Differential Revision:	https://reviews.freebsd.org/D23582

END