Hello, We are currently using the TTY framework for serial communication. We are wondering if it is possible to give the TTY device in more deterministic behavior (as in "less locks & no sleeping") So in case of non blocking read/write behavior: - We want directly write data to the serial_core transmit buffer and return immediately. - Incoming data should be buffered, on a read data is read directly from that buffer and when no data available return immediately We have the idea that the default N_TTY line discipline introduces too much overhead & locking behavior what makes it less suitable for deterministic serial communication on a PREEMT_RT platform. Our first thought was that we need to use some kind of "raw" line discipline, that directly writes data to the serial_core transmit buffer, and buffers incoming data. But isn't such a line discipline already available? Or are we missing a option/flag for the N_TTY line discipline, that will achieve the same behavior? Regards, Ivo Sieben -- 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
