On Mon, Jan 28, 2013 at 5:28 PM, Linus Walleij <linus.walleij@xxxxxxxxxx> wrote: > On Mon, Jan 28, 2013 at 9:15 AM, Chanho Min <chanho.min@xxxxxxx> wrote: >> [Russell] >>>Well, I thought I had explained that I'd prefer to see the poll rate >>>adjusted with the baud rate, but maybe I wasn't explicit enough. >>>Instead, what we seem to have ended up with are two new entries in >>>platform data (which we're trying to get away from with DT): >>> >>>+ unsigned int dma_rx_poll_rate; >>>+ unsigned int dma_rx_poll_timeout; >>>Should we scale the polling interval according to baud >>>rate? >> >> It is also our concern, I will suggest the proper way. It was thought a way to reduce unnecessary cpu usage, but, now we add dma_rx_poll_timeout to stop polling during idle. I thought it is preferred the poll rate is decided by it's user than auto scale. because The required response to tty can be differ from platform to platform. Some platform need fast response even if more cpu usage is needed, but other platform will be enough to handle with slow response. Any opinion will be appreciated. Thanks Chanho -- 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
