Re: printk() vs tty_io

From: Alan Cox
Date: Thu Dec 15 2011 - 05:32:02 EST


> We probably could, I can have a closer look, but the main question is,
> are we going to commit to no wakeups from console implementations? That
> would mean removing the USB serial console support and other such stuff.

That's a non starter.

> [ Personally I think USB serial console is insane, if you really need
> something like that use the ehci-dbgp thing, that at least has a chance
> of working. ]

Sometimes USB serial console is the best you've got.

> If we're not going to commit to that (which would be valid choice given
> where we are), my printk efforts are pointless and I'll reconsider.

For lockdep spews do they need to be spewed synchronously - clearly it's
good if they can be but its possible that they could be buffered ?

Alan
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