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- jessie 3.16.56-1+deb8u1
SCHEDULE_HRTIMEOUT_R(9) | Driver Basics | SCHEDULE_HRTIMEOUT_R(9) |
NAME¶
schedule_hrtimeout_range - sleep until timeoutSYNOPSIS¶
int __sched
schedule_hrtimeout_range(ktime_t * expires,
unsigned long delta,
const enum hrtimer_mode mode);
ARGUMENTS¶
expirestimeout value (ktime_t)
delta
slack in expires timeout (ktime_t)
mode
timer mode, HRTIMER_MODE_ABS or HRTIMER_MODE_REL
DESCRIPTION¶
Make the current task sleep until the given expiry time has elapsed. The routine will return immediately unless the current task state has been set (see set_current_state). The delta argument gives the kernel the freedom to schedule the actual wakeup to a time that is both power and performance friendly. The kernel give the normal best effort behavior for " expires+delta", but may decide to fire the timer earlier, but no earlier than expires. You can set the task state as follows - TASK_UNINTERRUPTIBLE - at least timeout time is guaranteed to pass before the routine returns. TASK_INTERRUPTIBLE - the routine may return early if a signal is delivered to the current task. The current task state is guaranteed to be TASK_RUNNING when this routine returns. Returns 0 when the timer has expired otherwise -EINTRCOPYRIGHT¶
May 2018 | Kernel Hackers Manual 3.16 |