1WAIT_EVENT_INTERRUPT(9)          Driver Basics         WAIT_EVENT_INTERRUPT(9)
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NAME

6       wait_event_interruptible_lock_irq_timeout - sleep until a condition
7       gets true or a timeout elapses. The condition is checked under the
8       lock. This is expected to be called with the lock taken.
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SYNOPSIS

11       wait_event_interruptible_lock_irq_timeout(wq, condition, lock,
12                                                 timeout);
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ARGUMENTS

15       wq
16           the waitqueue to wait on
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18       condition
19           a C expression for the event to wait for
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21       lock
22           a locked spinlock_t, which will be released before schedule and
23           reacquired afterwards.
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25       timeout
26           timeout, in jiffies
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DESCRIPTION

29       The process is put to sleep (TASK_INTERRUPTIBLE) until the condition
30       evaluates to true or signal is received. The condition is checked each
31       time the waitqueue wq is woken up.
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33       wake_up has to be called after changing any variable that could change
34       the result of the wait condition.
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36       This is supposed to be called while holding the lock. The lock is
37       dropped before going to sleep and is reacquired afterwards.
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39       The function returns 0 if the timeout elapsed, -ERESTARTSYS if it was
40       interrupted by a signal, and the remaining jiffies otherwise if the
41       condition evaluated to true before the timeout elapsed.
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44Kernel Hackers Manual 3.10         June 2019           WAIT_EVENT_INTERRUPT(9)
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