Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [RFC PATCH arm: initial TI-Nspire support] | Date | Mon, 8 Apr 2013 23:29:07 +0200 |
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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
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