On Tue, 2009-04-21 at 10:29 -0700, David VomLehn wrote: > On Tue, Apr 21, 2009 at 06:11:11PM +0100, David Woodhouse wrote: > ... > > The kernel output is going to be spewed when a console registers with > > CON_PRINTBUFFER anyway, and if we printk a warning about userspace > > console output being lost, that ought to be good enough to notify the > > user that something may have been lost. For bonus points, we could even > > make that 'dummy' tty driver buffer a limited amount of userspace > > output, maybe. > > What in the world are users going to do when they see a message about > output being lost? There is no way to recover the data and no way to > prevent it in the future. I don't think this is a good approach. > > Remember, even though the previous functionality of USB consoles was, in > theory, less reliable than it appeared, it actually has been working well > for years. Thus, tossing output will count as a regression for most of the > world. So implement a small amount of buffering, as I suggested, and it should be sufficient to cover the cases that were only working before by blind luck anyway. -- David Woodhouse Open Source Technology Centre David.Woodhouse@xxxxxxxxx Intel Corporation -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
