Messages in this thread | | | Date | Wed, 21 Dec 2011 18:51:12 +0000 | From | Alan Cox <> | Subject | Re: [RFC][PATCH 7/7] serial, 8250: Mostly avoid wakeups from under port->lock |
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> > Also I think it's probably buggy - sending the x_char is forward progress > > so probably needs to cause a wakeup. > > Could you explain that more, its not actually connecting with any > neurons..
The tty output queue is the ring buffer + one byte (x_char). It's effectively two priority queues one of which is 1 byte long and high priority, the other of which is low priority.
> > So for the moment NAK, but worthy of figuring out how to do it right > > OK, will try and see if I can poke at it a level upwards..
I think that is the right magic - and also means all the embedded consoles might be poked the right way.
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