1WAIT_EVENT_CMD(9)                Driver Basics               WAIT_EVENT_CMD(9)
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NAME

6       wait_event_cmd - sleep until a condition gets true
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SYNOPSIS

9       wait_event_cmd(wq, condition, cmd1, cmd2);
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ARGUMENTS

12       wq
13           the waitqueue to wait on
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15       condition
16           a C expression for the event to wait for
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18       cmd1
19           -- undescribed --
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21       cmd2
22           -- undescribed --
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CMD1

25       the command will be executed before sleep
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CMD2

28       the command will be executed after sleep
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30       The process is put to sleep (TASK_UNINTERRUPTIBLE) until the condition
31       evaluates to true. The condition is checked each time the waitqueue wq
32       is woken up.
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34       wake_up has to be called after changing any variable that could change
35       the result of the wait condition.
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38Kernel Hackers Manual 3.10         June 2019                 WAIT_EVENT_CMD(9)
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