Hello,
Is it ok to use wait_for_completion in a workqueue?
static void my_work(struct work_struct *work)
{
while (true)
{
wait_for_completion(completion);
// Do something here
reinit_completion(completion);
enable_irq(irq);
}
}
static irqreturn_t my_irq_handler(int irq, void *dev)
{
disable_irq(irq);
complete(completion);
return IRQ_HANDLED;
}
Something like the above is what I have. Is it a correct way to
do things or complete idiotic brainfart. Workqueues can sleep so
I thought of the above code, but, was not sure.
And I am not using _interruptible or _interruptible_timeout because
I absolutely want it to wait for the IRQ. Now as such though this
works I get stack traces with hung task complaining and I have
to set /proc/sys/kernel/hung_task_timeout_secs to 0. And were the IRQ
not generated I do get NMI watchdog hang.
I will accept I have only little knowledge of these things.
Regards,
Victor.
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