sbintime_t
sbintime_t elapsed, now;
__read_mostly sbintime_t sbticks; /* system master ticks at hz (64bit) */
sleepq_set_timeout_sbt(const void *wchan, sbintime_t sbt, sbintime_t pr,
struct sleepqueue_wchan *wc, sbintime_t timo, int tflags)
extern sbintime_t sbticks; /* 64-bit ticks since boot / mono */
void sleepq_set_timeout_sbt(const void *wchan, sbintime_t sbt,
sbintime_t pr, int flags);
sbintime_t td_sqtimo; /* freebsd sleepq*() API */