zfs/include/linux-timer.h

#ifndef _LINUX_TIMER_H
#define _LINUX_TIMER_H

#ifdef  __cplusplus
extern "C" {
#endif

#include <linux/sched.h>
#include <linux/timer.h>

#define lbolt				((clock_t)jiffies)
#define lbolt64				((int64_t)get_jiffies_64())

#define delay(ticks)			schedule_timeout((long timeout)(ticks))

#ifdef  __cplusplus
}
#endif

#endif  /* _LINUX_TIMER_H */