| WAIT_EVENT_CMD(9) | Driver Basics | WAIT_EVENT_CMD(9) |
NAME¶
wait_event_cmd - sleep until a condition gets true
SYNOPSIS¶
wait_event_cmd(wq, condition, cmd1, cmd2);
ARGUMENTS¶
wq
the waitqueue to wait on
condition
a C expression for the event to wait for
cmd1
-- undescribed --
cmd2
-- undescribed --
CMD1¶
the command will be executed before sleep
CMD2¶
the command will be executed after sleep
The process is put to sleep (TASK_UNINTERRUPTIBLE) until the condition evaluates to true. The condition is checked each time the waitqueue wq is woken up.
wake_up has to be called after changing any variable that could change the result of the wait condition.
COPYRIGHT¶
| June 2023 | Kernel Hackers Manual 3.10 |