Hi,
my 2.4.0-test13-pre1 just stopped answering to my keystrokes.
I've found that it is looping in tqueue_bh and flush_to_ldisc
still again and again.
To my surprise I found that flush_to_ldisc() does
if (test_bit(TTY_DONT_FLIP, &tty_flags)) {
queue_task(&tty->filp.tqueue, &tq_timer);
return;
}
Looks ok. But only until you'll look at run_task_queue().
It now contains
while (!list_empty(list)) {
...
}
So postponing event to next timer tick does not work anymore.
It will stop cycling in run_task_queue and machine is dead
(unless you have some spare CPU).
Is current run_task_queue() behavior intentional, or is it
only bug introduced by changing task queue to list based
implementation?
Thanks,
Petr Vandrovec
vandrove@vc.cvut.cz
P.S.: Yes, I know that I should bought faster computer so that
ldisc buffer does not overflow, but...
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