On Monday 08 April 2013, Fabian Vogt wrote:
> Yes, I've heard that before, but than it would work/not work independently
> of NO_HZ. Can printk's be executet within console_lock() ..
> console_unlock() blocks?
I think it's legal to call printk in that case, but the message will
not be printed until you reach the console_unlock()
> If not, it could be fb_notifier_call_chain, too, but that wouldn't be
> likely at all.
> I also tried spinlock/mutex debugging and soft lockup detection,
> but neither of them outputs anything.
Unfortunately, lockdep does not help with console_lock, since that
is a weird semaphore variant, not a standard mutex or spinlock.
Arnd
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
