NAME¶

schedule_hrtimeout_range - sleep until timeout

SYNOPSIS¶

int __sched schedule_hrtimeout_range(ktime_t * expires, unsigned long delta, const enum hrtimer_mode mode);

ARGUMENTS¶

expires

delta

mode

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 -EINTR

COPYRIGHT¶