Added spdk_poller_(pause|resume) that allow a poller to be paused and
then resumed at a later point. These functions come in handy in cases
when a poller is known to be idle until a certain event occurs.
Change-Id: I7f21c80eb9ac4e8e1cf24d66f99da5687aafe358
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/477920
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>