On Wed, Mar 21, 2018 at 10:52:36AM +0800, Jeremy Kerr wrote: > This series implements flow control for the ASPEED VUART driver. This > hardware is slightly unusual in that the RX data rate can quickly > overwhelm the flip buffer code, so the ldisc-driven throttle/unthrottle > mechanisms don't entirely solve the problem. > > To do this, we have a couple of minor changes to the tty core, as well > as an update to the tty proc interface to display buffer overrun metrics > (entirely optional, but does allow us to see the problem). > > Then, we implement the standard throttle mechanism, and augment it with > a fast-path to throttle if we overrun the flip buffers before the ldisc > has had a chance to run. > > Questions and comments most welcome; I'm fairly new to the tty layer. I've applied patch 2 here, can you redo the series again after fixing up the first one and include the v2 of patch 5 so it's easier for me to figure out what to really apply here? thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
